02 mountaineer- service engine soon light on- getting 401 and 125 codes have replaced the egr valve egr solenoid and temp sensor service light on again within 2 miles why?
try changing the d.p.f.e. cost about $35,i just replaced one on a 2003 mercury mountaineer.
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Why would the engine temp go up when idle only when it is hot outside and a check engine light for egr valve flow malfunction?
Answer . Hey Michael==Make sure the cooling fans are working properly. It varies with the make of car. GoodluckJoe.
What needs to be done if the service station indicated that the EGR valve is the reason a 98 Mazda Protege SE check engine light came on?
egr vavle is very easy after a few replacements. its located under the throttle body with either 2 10mm or 12mm bolts. along with 1 plug. a little tricky at first, but do not take to a dealership for this, waste of time, and ive done about 30+ of these at my dealership. get the erg and the gasket. v…ery easy, remove air filter box, undo all plugs, then replace egr. gl. Answer . i was told to see if the line was disconted on mine if it was i d to repair it and it ws need to get fitting to conected 2 hoses together. if not then the erg vaulve box wasnt working. its a little black box on the fire wasl by the winshild .check the hose that is conected to it. Answer . You have to know what the code reads. If it reads PO300, then most probably it is your egr valve. You either have to have it cleaned or replace it. I have that same problem with my Mazda Protege 2001 es and i will go this week to have it checked. Let's see how this will cost. I hope this will resolve my miss fire problem on the car.. Alain. Another Answer . If you look around at forums and discussion groups about this vehicle, the EGR often comes up. It seems that the check engine light and obd code come up when the egr valve sticks, which happens when it gets gummed up and/or dirty. I have often reset my check engine light by disconnecting and reconnecting the battery, and the light does not come on for weeks, sometimes months, and now it doesn't come on at all. If you take it to a dealership or mechanic out for bucks, they will tell you that you need a new EGR valve, charge you a few hundred bucks, and the thing will get gummed up again in no time. I would either take it apart and clean it out with some pressurized air and carb cleaner, or try reseting the code to see if it's really a constant problem. 60,000 miles after the first EGR related check engine light and I still haven't had any problems. (MORE)
What could be wrong with a 1995 Camaro if the code said EGR valve 2 and 3 solenoid bad but after replacing them the check engine light still comes on?
Did you try erasing the stored code. If you don't erase them, they will continue to show, even though new parts were put in. Discontect negative cable from battery for 1 - 2 minutes, if you have a 12 pin (ALDL)Assembly Line Data Link. (early 94 & back) Use a scanner to remove them if your car is OBD…II compliant. Which would have a 16 pin (ALDL)< some were installed in Pre 96(later 94-95) Or go to Pep Boy's if no scanner is available. After you erase codes, PCM will have to re-learn all it's stored info, and verify new parts to monitor. It will take so many start cycles, and so many miles before it will show any fault codes if any, before you can determine if the parts you replaced cured the problem. Also, did you try testing the wiring and circuits before replacing the solenoids? New parts with malfunctioning wiring or circuits will still show a code as being bad? Test parts and trace circiuts First! Replace parts Last!$$$$$$$$ Search & Destroy for problems, before taking a hit on price for parts. PCM codes, get you in the general problem area. Then it leaves the rest up to you! Some day they will pinpoint them for us, but unfortunately it won't be this day!! When i had this come on with my 95, i found an exhaust leak in the front of the motor near the alternator. I would tighten all your bolts and also look for any vacuum leaks that maybe around. (do this if your codes continue to come back after clearing them) (MORE)
Why does the engine light keep coming on indicating EGR valve in a 2000 Mazda Protege after the EGR valve and the EGR booster sensor were replaced?
Either there is no Voltage or Vacume going 2 the Valve OR the Passagway under the Valve is Blocked. Clean the EGR Line with carb cleaner to ensure not any blockage. If you are referring to the check engine light and are still receiving a code indicating EGR valve, then the problem is that the EGR v…alve is being effected by the problem. The EGR valve is not the problem, it is just the component that is being effected. Code readers only tell you the effected part, not necessarily the bad part. This is one of the big problems with autozone's free diagnostics, you get what you pay for. (MORE)
What can you do with your 99 Mazda Protege when the EGR valve was replaced twice and the sensor once and the engine light is on again?
Please have the vehicle scanned again, and if nessisary, go to a different shop to get a 2nd opinion. It may not be the EGR system at all, it could be something else, like a faulty computer, or damaged hose somewhere. Talk to the tech who scanned it. Ask for a printout of the codes and an explainati…on of each Answer I have been a Mazda tech for 16 years.There are most likely ports clogged in your intake manifold.first check for vacuum at the boost sensor (map sensor)the nipple on the intake can get clogged with debris.If that isn't it,you have the passages clogged in the intake with carbon.you can get to these through the throttle body-you may want to remove it and the egr valve,use a coat hanger,wire,whatever it takes (MORE)
Why does the engine light keep coming on indicating code PO402 excessive EGR flow detected in a 2000 Mazda protege after the egr valve and EGR booster sensor were replaced?
Answer . The answer posted previously seems to be taken verbatim from this site, and probably copyrighted there: . Mazda EGR Flow: Low or Excessive? http://www.asashop.org/autoinc/sept2002/techtips.cfm and if that doesn't work, there are additional tips here: . P0402 EGR code Help - Auto…motive Message Forums http://www.automotivehelper.com/topic478910.htm (MORE)
Answer . \nP1870 is Transmission Component Slipping.\n. \nI have also heard of it referred to as The Code Of Death.
What can you check or replace if the check engine light comes back on and the code is P401 and you have already replaced the EGR valve?
Check the EGR selenoid valve. The vacuum will pass throught the defective selenoid valve and go the EGR valve even if it has not been activated. The ECM will not detect a defective selenoid valve - only an EGR problem. DPFE sensor If it's a Ford product, you may need a DPFE sensor. You should als…o check for a restriction in the EGR passageway. (MORE)
You have a 1997 mercury mountaineer 50 liter and you replaced the egr valve and solenoid what else can be making by check engine stay on?
Answer I had the same problem; did alot of research and found that the ERG valve wasn't the issue. There is a device just before the ERG Valve called a DPFE sensor that was causing the error but the computer couldn't differentiate it. Check out this link and replace this part. It takes about an ho…ur and its a bit of a pain but it cleared my check engine problem once and for all. http://www.explorerforum.com/forums/showthread.php?t=164517 (MORE)
The service engine soon dash light comes on after driving a few miles and getting engine warm especially speed over 40 mph Someone else with same symptom said wire off sensor Where is sensor?
There are pages and pages of things that can cause a check engine light. You need to have it checked with a scantool. Then the code can be diagnosed and repaired.
Answer . \nJust because a code that is titled to a particular system is noted does not mean that component is bad. Check the passageway.
On a 1998 4x4 blazer the service engine light was scanned and came up with egr valve you replaced it and the light came on again what could be wrong?
if the code that's comming up is insufficent flow make sure that the opening in the intake where the egr sets ove is not blocked by carbon build up try sticking a piece of wire though the opening if it goes in and doesnt bind up its not clogged (opening goes from egr to tbody opening
2001 Ford Taurus sel there is a light that looks like the engine you have had it to a mechanic who changed the egr valve and egr solenoid switch the light still lites why does this lite not go out?
\n. \nBuy, borrow or rent an OBDII (On Board Diagnostic 2) code reader, plug it in to the vehicle as instructed, read the code and find out what's going on.\n. \nWith most OBDII code readers, you can clear the code and turn off the light. Then run the engine for a while and see if the light comes …back on. If it does, see what code you get and take appropriate action.\n. \nOften a mechanic doesn't have the time or resources to follow through on an intermittent or recurrent problem and as a result the problem doesn't get adequately addressed. That is why many people get involved in their own auto repair and educate themselves in what goes on under the hood. \n. \nIf you have any additonal questions feel free to contact me at:\firstname.lastname@example.org (MORE)
Service engine light on - code p0401 - EGR Sensor - 1999 Sable - Taurus - could be a build up of carbon Can you clean them or must they be replaced?
You can try cleaning it, but in general, most people have found that it needs to be replaced. Although it is probably too late for this particular user, I recently searched and searched for an answer to the same questions about the p0401 in the late 90's Sable (Taurus) Mine is a 3.0 24 valve Du…ratec. I am not sure about the process for any other models. tools required: . throttle body cleaner . paper towels . hard metal wire . socket wrench and a 5/16, and a 10 millimeter deep well . digital camera . patience OK: Here goes. Before you do anything else, do not buy any parts, whatsoever. Get to Autozone...buy some throttle body/air intake cleaner. Detach your negative (most likely black) battery cable (unless you owners manual suggests otherwise) Take a digital picture of how your throttle body looks before you start taking it apart. You will need to know where the various springs reattach. Get yourself a socket wrench, with a 5/16ths, and a deep-well 10 millimeter socket. Take off your air cleaning tube, and make sure you are certain which hoses reconnect to where. once it's off, you'll see a brass plate inside the exposed hold. That is called the throttle plate. There is a lever to the left side that controls when it opens and closes, this lever is attached to a series of springs and a steel cable (the throttle cable). Take off the retention plate for the throttle cable (it will also be valuable to remove the throttle cable from its place, so that you are sure that you have not stretched it out in any way). Then, whip out that 10 mil deepwell, and take off the 3 bolts and one post screw holding the throttle body on. Yes, you are going to clean it, but that comes later, never mind that sticker on the top of the opening that says 'do not clean throttle body,' you won't hurt anything. Take off the throttle body gasket, and do not break it, you will need it later. If it needs scraped off, take a picture of what it looked like for a reference, a discount auto parts store will try to sell you the wrong one, i promise. and that is a whole can of worms in a different story. When you look inside the area revealed by removing the throttle body and gasket, you will see the air intake manifold. See where the egr valve is, looks like it goes into the manifold, right? No, none of those holes that are actually inside the manifold lead to it. Instead, on the face of where the throttle body mounted to the manifold, there is a c-shaped passage-way that has 3 opening that would allow air to bypass the throttle body gasket. remove the egr valve (10 mil as well) and get your piece of hard metal wire. you will have to make a 90 degree turn inside the egr passage to find where its outlet is, but, if you can't get the wire through, that is what is causing your p0401. remove that valve on the top of the air intake passage way (it's your idle air control valve, and you can't go liberally spraying throttle body cleaner into if or you will burn our the little motor at the end). in either case, whether it is completely clogged or not, place a paper towel underneath that c-shaped passage (it took me a while to figure out what people were talking about, mine was solid-black, caked completely with carbon, I didn't even realize it was supposed to be an open channel!!) completely douse it with the throttle body cleaner to break it up a little, and proceed to clean it out with your hard metal wire (a tiny, flat screwdriver might also be helpful, but be careful the cast mold of your air intake is aluminum, and will scratch very easily) repeat as necessary until it is clean, and make sure the passage is open leading to the egr valve (top left of the C). Now you can clean out your throttle body itself. I found it easiest just to spray some cleaner in it, and let it sit. You do not want to scratch the inside of the throttle body. the cleaner, and then a good wiping with some paper towels will do the trick. Get back to Autozone, and bring the throttle body gasket (or picture of it) and order a new one, make absolutely certain that they are the same...remember, can of worms. you don't want what happens with the wrong gasket, it is unbelievably stressful to have your mercury sable station wagon sound like it is ready for the Indy 500. replace all the parts, referencing the first digital pics you took to ensure it's all assembled properly. I would suggest (although it is not necessary) to leave off the clean air tube overnight, and prop a brick on the gas pedal to open the throttle plate, it will allow all the acetone and alcohol from the throttle body cleaner in the a.i. manifold to evaporate. Reattach the clean air tube (if you haven't already) and then reattach your neg. power cable. Start her up...and listen to that kitty purr. just kidding, for a while it will run strange, and unbelievable amounts of smoke will pour out. that's the carbon you cleaned up and the throttle body cleaner burning off. don't stress. Let it idle for a while. An extended strange idle means something went wrong, either a vacuum leak (bad gasket, you could have not reattached a hose) If you took off you neg battery cable, you will find that your SES / CEL light has been reset and is now off. Don't be too confident, this could have only been one of your problems. Drive it for a day or 2, and see if it comes back on. if you get another p0401, then it is 75% certain to be your dpfe sensor. It's back, behind the throttle body, under the a.i. manifold, on the drivers side of the engine. You'll need that 5/16th and alot of blind groping to get it off. The new sensors are shaped differently, so you will also need to get new hoses (which is probably a good practice anyways). the 'ref' hose will need to be at least an inch longer than it was with the factory dpfe sensor. happy times, hope this helps someone. . I'd bet you anything it has nothing to do with your egr valve. Hope you didn't waste the cash on a new one yet. Most often a new dpfe sensor does the trick. But in the Fords, depending on the engine, there is also a passageway that clogs up within your intake manifold. If your egr valve mounts onto the front of the intake on the drivers side, i would take the throttle body off and look just in case. If there is excessive carbon build-up, clean it out with some throttle body cleaner, and it might help your problem. Cheap fix, if your patience isn't considered an expense. Good luck. the dpfe sensor might run you 20-30 bucks, and a new throttle body gasket is 99 cents. Answer It means the PCM sees a lack of EGR valve flow. That could be a problem with the EGR, EGR passages, EGR control system, EGR position sensor, wiring, or PCM. Answer p0401 is insufficient flow in the egr. take off your throttle body and clean out the c-shaped passage on the face of the air intake maniflod. if that fails, get a new dpfe sensor. if that fails, check all of your hoses again. If that fails......well....we're getting closer to a bad pcm here....next is the vacum (evr) then the egr vavle itself. best of luck. my 98 sable has the 24 valve durotec 3.0-it was the passage on the face of the a.i.manifold that caused all of my egr problems. Who told you that, a dealer, mechanic? did they check everything first? did they apply vacum to the valve and see if it was faulty? did they replace the dpfe? 60% of late 90's early 00's ford and mercury p0401's are a bad dpfe sensor. 30%are a clogged egr passage after the throttle body in the manifold. 9% are either the valve or the evr vacum. that leaves 1% to be either a leaky hose, or a pcm. check again before you drop bookoo bucks on a pcm good luck mb Answer It has to do with DPFE sensor circuit high voltage detected. EGR temp sensor malfunction. That is all I can find. Hope this helps. I found this: P1401 Differential Pressure Feedback EGR Circuit High Input It is fairly common for this to be a problem with the sensor, not the EGR valve. The message is misleading. Also, it there is a 1400 message with it, it is most certainly the sensor, not the valve. jcjimz The advice above about the passage from the EGR to the throttle body is good. Usually you don't have to replace thr EGR but if you're taking it off replace it any way, it's not expensive. On the 3 liter DOHC Ford, Mercury engines the problem with the EGR is most always the passage through the manifold to the throttle body. Take off the EGR and the throttle body. From the EGR the port makes a hard right to the throttle body that you can not see. On the throttle body side there is a C shaped groove that is on the left of the main large port. It is probably full of carbon. Get a spray can of B-12 Chemtool and clean it out. You will see on the upper side of this groove that there is a small port. This goes to the EGR. Take your B-12 and clean the entire port then spray it into the port to the EGR. Let it sit then spray it again. Take the hose from the B-12 and spray it from the EGR side too. Let it soak. Do this until you get a steady flow of B-12 from the EGR to the throttle body. After weeks of spending money and time replacing things this was the entire problem and have been told by a reputable mechanic that 90% of the time that's the whole problem. (MORE)
1996 Mazda Millenia check engine light shows egr codes using vacuum tester and pulling vacuum on EGRr valve kills engine Checking egr solenoids vacuum Vent what will turn on the check engine light?
The check engine light is because the EGR 'lift sensor' is showing that the valve is not lifting when it should be, or it is indicating the sensor is open, or the voltage is out of range the lift sensor may be bad, or it's not lifting when it should be (vacuum leak, vacuum switch leak upstream) EGR …normally does not activate at idle, or engine will stall (as you have seen). clear the codes, then hook up a vacuum gauge when driving the car. Once the car is warmed up, there should be vacuum at the egr valve at part throttle. If not, the upstream vacuum switch is faulty or vacuum is leaking out somewhere. See the following tips on Mazda egr systems: http://www.asashop.org/autoinc/sept2002/techtips.cfm (MORE)
When changing the 02 sensors and the spark plugs on a 1998 Nissan Maxima why would the service engine soon light still come on?
Have the service engine soon (check engine), same thing light scanned to know exactly what is the problem. You may purchase a cheap scan tool at some car shops like Canadian tire and scan the code yourself. Obviously make sure to change the defective parts with good parts and cancel the code afterwa…rds. I hope this was helpful. (MORE)
Your engine light came on a 2001 ford explorer sport trac you replaced egr valve and erased the code what else could it be?
Answer . \nThere is information missing that will help in troubleshooting. First, what codes were indicated in the computer? Not just the numbers (I don't have a ref book handy), but what is the indicated fault? I've thrown money at issues in the past, only to find the light to come on again …and have to go to AutoZone to pull the code, and it was usually the SAME code. Reply with the indicated symptom - my user name is texavette. One thing I CAN tell you is that it might be either the recirculation solenoid or the sensor. I had an issue that resembled an EGR fault only to narrow the field to the left (driver) bank mounted sensor device - linked by tubes to the exhaust tube behind the exhaust manifold AFTER replacing the solenoid itself. I learned about these by "Googleing" the ODBII codes and reading up on the symptoms and parts. Good luck! email@example.com (MORE)
2001 Pathfinder engine light problem you replaced 2 oxygen sensors then replaced 2 timing sensors the service engine light still on computer shows no code?
Wrong scanner?? If a check engine light is on, there are codes. Timing sensor? Check engine usually means a problem... Service means that scheduled service needs to be performed like oil change, or timing belt replacement. I would Check your Catalytic Converter. What often happens is the catalys…t that is in the Catalytic converter Heats up and Blows out into your Muffler. This means It is not the sensor,but your converter and Muffler Need Replaced.I have just fixed two cars with this problem,and they had the same symptoms,Check engine Light. (MORE)
Why does the check engine light on a 1997 mercury sable stay on after replacing egr valve and egr sensor?
Answer . \nYou need to reset the light with a OBD2 scan tool, after a repair. If you did reset the light and it just came back on, then you have not found the problem. Remember when reading codes, the code does not tell you what component is bad. It only tells you what component is being effecte…d. (MORE)
What would cause the check engine light to stay on on a 1996 Geo Tracker and the code to say EGR malfunction when the EGR valve is new?
Check Engine Light On . After replacing the EGR valve, use the diagnostic tool and erase codes then read the codes again.. I had the same problem on my 97 geo metro. After replacing the egr valve, the check engine light stayed on. After a while it was suppose to clear itself but it didn't. So I …went to autozone borrowed their diagnostic tool, erased the codes and then my car passed and the check engine light went off. (MORE)
94 ranger 2.3 with code for inadequate egr flow detected egr solenoid resistance good replaced egr flow sensor due to code egr solenoid supply voltage is good egr valve is good what else can you check?
Most likely the inside of the EGR valve assembly and/or associated tubing is plugged with exhaust deposits. You'll probably need to either disassemble the EGR assembly to clean it out or replace the assembly entirely.
Why does the engine light keep coming on indicating EGR valve in a 2000 Chevy impala after the EGR valve was replaced?
Answer . I just replaced my egr valve and my light went off, however some reasons for yours not to go off might be that the hose/pipe coming out to the eghaust manifold into the egr valve has enough deposits in it to cause a blockage.....signifying that your old egr valve was good, just not gett…ing any unburned fuel to it. I don't know how to clean the blockage out so maybe search the net and see if you can find out how to do that. perhaps a carborator cleaner will work? (MORE)
What else could be causing the check engine light to be on in a 2001 Mercury Sable that the code read that it was egr valve and have replaced valve?
Answer You made the same mistake I did, and likely replaced a perfectly good egr valve. The "Related Questions" below gathers together a ton of information about this secondary air / EGR / DPFE and other stuff related to the 401 trouble codes.
Why does the check engine light keep reoccuring with the same code PO401 EGR valve after the EGR valve was replaced This is on a Ford Explorer Sport Trac?
The OBD 2 code, P0401 means "low flow". The most common cause of this code with any Ford vehicle is the DPFE sensor, NOT the E.G.R. Other causes could be blocked passages for the EGR, or leaking or restricted hoses that go to the DPFE..
How long do I have to wait till the computer recognizes the change and the Check Engine light goes off after replacing a bad EGR Valve and EGR Solenoid Valve in my 98 Expedition?
Answer . Try disconnecting the battery for about 10 minutes to reset the code. Answer Additional info on question . Went to Autozone to see if I replaced the wrong part. They said I had to wait "a while" till the change was recognized. That the computer used some type of formula of engin…e starts, miles, and gears shifted through before it would turn it off. It has been 3 days, about 8-12 engine starts and about 30 miles. (MORE)
Answer . Try disconnec ting the battery for about 10 minutes If this doesn't work have vehicle scanned to see if there is an additional problem
Service Engine Soon code on 95 supercharged Riviera says EGR valve pintle position and same message after cleaning with carb cleaner and even after replacing with salvage yard unit what else can I do?
Either wire harness or computer. Try bulk head connector at firewall, computer is located behind glove box, cost about $100 at autozone, you have to change out the e-prom from your old unit to new one.
You just replaced th egr valve for a 2002 Mustang and your check engine light came on a day later and test said it was your egr valve again what can cause this?
Possibly other systems connected to the egr valve are faulty. You may need to have a professional diagnose the problem, rather than replacing parts.
O2 (Oxygen) sensor. HO2S (Heated Oxygen) sensor. ECT (Engine Coolant Temp) sensor. MAF (Mass Air Flow) sensor. MAP (Manifold Absolute Pressure) sensor. CKP (Crankshaft Position) sensor. CMP (Camshaft Position) sensor. ECL (Engine Coolant Level) sensor. EOP (Engine Oil Pressure) sensor. EVP (EGR Valv…e Position) sensor. KS (Knock) sensor. PFS (Purge Flow) sensor. TPS (Throttle Position) sensor. VSS (Vehicle Speed) sensor. I'm sure I missed several more. (MORE)
Your 2002 ford escape's check engine light came on and the mechanic said the egr valve needed to be replaced after replacing the egr valve the check engine light came back on within the next 20 miles?
take the negative cable loose on your baterry and reset the light . see if it comes back on if yes you have another sensor gone bad more than likely oxygen sensor. Auto Zone will connect a code reader to your car computer for FREE and read the trouble code that the CEL is indicating. After you have… gotten the code(s) the Zone can print an explanation of what they found on receipt paper for you. Post back here and someone with knowledge of OBD-II trouble codes can help point you in the RIGHT direction. (MORE)
If the check engine light problem has been diagnosed by a Maxda dealership and the EGR valve replaced why is check engine light on again after 2 months?
Have vehicle scanned - most auto parts stores will do this free to determine problem. Have vehicle scanned - most auto parts stores will do this free to determine problem
97 Geo Tracker Service Engine light code shows something is wrong in EGR section you replaced egr valve and a solonoidand a sensor. The light comes on again after 40 miles I also relaced gas cap?
Hi,\nI can only ask if you have had a smoke test done yet to\ndetermine where the leak is? I also have a '97 and have yet\nto find where mine is. The smoke test comes next. I also\nhave replaced all of those and more. I think I have a leak \nin the fill tube vent or the overflow. I would try and hav…e\nthe smoke test done and then they might be able to tell \nwhere the leak is. I've been beating my head against the\nwall on this and only keep dumping dollars into the car\nbut I can't afford another so on I go too. Good luck and if \nyou find out, please put another answer here.\nThanks,\nSteve H. (MORE)
My check engine light comes on in my 1999 Honda accord v6 and the code po1491 egr valve insufficient lift I have replaced the egr valve but the light continues to come on is there something else wrong?
Most likely the egr ports in the intake manifold are plugged.This requires the removal of the upper intake manifold.Then you can access the egr ports and clean them with a coat hangar and a power drill.The ports clog up as a result of poorthe poor fuel quality we get here in north america.Honda make…s a speacial repair kit for these egr problems consisting of a neww egr valve intake gaskets and a metal tube that is inserted into the egr port to eliminate the build up of carbon deposits in the ports.Good luck. Ralph E. Evans. A.S.E. master technician Boulder Colorado. (MORE)
You have an 1996 Saturn sl1 and the service engine soon light keeps on turning on the past three codes that it has shown are p0303 p0341 and p1406 the egr has already been changed when the light is on?
saturns are funny remove coil pack clean both surfaces block and bottom of coil pack
Service engine came on so I replaced the egr valve. Now after a week It is back on and most likely the egr is clogged again what could be causing this?
geo metro had a problem with the egr valve going bad causing the # 3 exhaust valve to burn, which could cause a lack of power in the engine performance. if this exhaust valve was burnt due to a faulty egr valve the new egr valve could have gotten clogged again causing a check engine light to reappea…r. (MORE)
Replaced egr valve check engine light still on and computer says egr valve is faulty what is the solution?
Replace EGR Vacuum Regulator (EVR) Solenoid and DPFE sensor after testing from here http://www.autozone.com/az/cds/en_us/0900823d/80/15/64/0d/0900823d8015640d/repairInfoPages.htm or just unhook egr valve and plug hose - reset engine light by removing battery cable. Plug vacuum hose back in for …emmissions test. (MORE)
How do you get the check engine light to go off of 1998 Chevy lumina after you replaced EGR valve two times Code still reads P0401?
I have come across this same problem many times with Ford & Isuzu, & it is worth a shot on your Lumina. You will need to take the EGR valve off & check the port that goes to the intake & make sure that it is clean, many times these ports are so small that they stop up with carbon from the exhaust. I…f it is stopped up you will have to clean it out maybe with a small piece of wire, just do not let the wire fall into the intake, or if it is really bad you will have to remove the intake to gain better access to this port. Once you have the port unstopped you can start the engine with the valve still off & make sure that you have vacuum on this port & make sure you have exhaust coming out of the other port. This has worked for me on several cars & has kept the light off & no more P0401. I hope that this helps. God Bless I seem to recall that, in some cases, there is a recalibration sequence for the EGR valve, though I agree that verifying the integrity of the manifold ports should come first. Also, check the wiring, and make sure the EGR position readback on the scantool is working. (MORE)
Check engine light is on at my 1994 Nissan Quest and i run a diagnostic test and egr valve failed if i replace egr valve do you think it will ressolve the issue?
It's a start there Poindexter. Fix the part that failed and retest. Maybe you should take it to a certified mechanic that understands basic car diagnostics.
1996 ford f-150 302 I have changed egr valve egr line to intake manifold and egr vacuum solenoid drives good for short distance and check engine light says egr insufficient flow?
i have the same truck and the same problem. i have only replaced the egr valve, iac valve, and o2 sensors. I've read some threads of later model trucks with a possible dpfe sensor problem instead thoughdpfe sensor or carbon build up inside the intake
Where is the EGR Valve located on a 2006 Silverado 2500 HD 6.6 turbo diesel with the lbz engine code I keep getting a check engine light because of this.?
The EGR valve is located on the passenger side of the engine on a2006 Silverado 2500 HD 6.6 turbo diesel. A bad valve will cause thecheck engine light to come on.
Replaced egr valve check engine light is still on - what else could be related to the 401 trouble code on a Ford Windstar?
Funny, you could have had a trained dealership technician, like me, tell you what the problem is for less than you spent on that EGR valve. Penny wise and dollar foolish my friend. Or simply do some more trouble shooting. Many times the engine code doesn't tell the whole truth on any vehicle. Cou…ld be a DPFE sensor or a vac regulator. More that likely the DPFE sensor easy fix. Good Luck See "Related Questions" below for more (MORE)
Did you delete the code? After you fix the problem you have to connect the computer back and delete the code. If you dont the code will still pop up
After repairing the cause of the code, you can clear it with a scan tool.
How do you reset the service engine soon light after replacing the EGR valve in a 1990 Buick Park Avenue?
disconnect your battery and touch the cables together then let the car sit with the battery disconnected for 30min
Just got a service engine soon light on a 97 maxima with about 140000 mi AutoZone's free check engine it said it was an oxygen sensor and an egr flow. Are they related?
I had the same problem.I took off the egr valve,cleaned it with a wire brush and carb cleaner.Clean out the hoses too.Have the service engine light reset and you should be good.
Will service engin soon light go off by itself after repair is done on 2000 gmc truck replaced knock sensors that's the code i got?
If the problem is fixed, the light will go off eventually. The computer has to run the proper self diagnostics three times and get a pass to turn the light off.
Because you did not have a faulty EGR valve. You misdiagnosed the problem. Start over and remember the code only tells you what part is being effected not necessarily the defective part. This is assuming you reset the light or drove the car enough cycles for the light to reset. If not then reset the… light and see if it comes back on. (MORE)
Because your car detected a problem in the engine or emission, you can go to an auto part shop and get the code read for free
Try removing negative battery cable for 10 minutes. If that doesnot work you will need an OBD2 scan tool to reset the light. I justcleaned my egr valve and the check engine light went off and Idrove it a little and it came back on how long do I have to drivemy car after work with the egr valve how m…any miles (MORE)
Because sensors in the car's computer system are getting signals that there is, or are, components that require professional care.