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Check Engine Light
The check engine light comes on in a car when the engine is experiencing a problem. Ask questions here about your car's check engine light.
7,238 Questions
Is driving a car safe with the check engine light on?
Ideally you would want to know why the check engine light is on. It could be something serious or it may not be. Are there any other symtoms/noises? It could be one of many things. The engine needs to be scanned for the error codes and a diagnosis can be made from there. Autozone or Advance auto will pull the codes for free. Hope this helps. "G"
Why does the car shake when it stops at a traffic light?
Hey Xiaolin=It is probalby in deed of a good tune up and just missing. Take it to a good garage. GoodluckJoe
Pull the codes from the computer, match the code to the troubleshooting procedure, follow the procedure to find the source. Repair the source, light will go out if that was the only problem. There are "monitors" or self test the computer runs the car through, if a problem occurs, it may not run all of the self tests until that problem is taken care. Therefore, another problem may exist. It is emission related.
It is 8-10 degree before top dead center with engine warmed to operating temp., RPM's at the proper range and the check engine connector jumped at TE1 and E1.
Many places do not want to put an OBD reader on if the check engine soon light is not on. However, the codes ARE stored in memory. Get yourself a Haynes Repair Manual for your vehicle (or check at your local library to see if there is one available), go to Chapter 6 and read how you can retrieve the codes yourself - also listed are all the codes and what each one means. Good luck.
In 1996, computers changed to save codes. ( OBD II) .
Many parts houses can read the codes.
Replace the four capacitors in the computer or replace the computer itself
firewall
4 - 8
3 - 7
2 - 6
1 - 5
front
Why would the check engine light be on in a 2004 Kia Sedona 431?
The check engine light will come on in a 2004 Kia Sedona 431 if a misfire is detected, the timing is wrong, or a weak spark is detected. There are many other possible causes which can be narrowed down by connecting an OBDII code reader to the vehicle.
What to do when your check engine light is on your 2006 Harley Davidson Read King Clasic?
Ask your friendly local Harley-Davidson dealer. . . ,
This is for a part lock/unlock throttle control circuit. The brain of the trans. I'd reset the battery, disconnect for 5 mins, then rescan after driving so the car gets hot and cold and relearns as to reset the IM monitors. If problems are still present, then it will show up again.
Yeah, it almost has to be a bad vent solenoid, or a broken connection in the wiring to it. This code is saying that the PCM is not seeing the voltage change when it grounds the vent solenoid to activate it.
Should have system voltage at one terminal with the ignition on, and a ground at the other terminal when the PCM commands the vent valve open.
There is a vacuum hose between the firewall and the back of the motor, it is formed with the 2 ends different diameters. The hose collapses when it is running which causes the engine to stall. I believe this is a dealer only item. Just replaced mine and the car runs fine now.
Take it to auto zone and have the codes read for free.
its just a vacuum hose probably. mine did it before too.
Autozone will not provide enough help.
Pull the codes from the computer, match the code to the troubleshooting procedure, follow the procedure to find the source. Repair the source, light will go out if that was the only problem. There are "monitors" or self tests the computer runs the car through a drive cycle, if a problem occurs, it may not run all of the self tests until that problem is taken care. Therefore, another problem may exist. It is emission related. OR hook up a scanner that is capable of clearing codes, and hope that none are still active.
Check that the Oxygen sensors are correctly installed and working. Also check with your ford dealership to see if your car is one of many that needs a new FUEL pump. Ford has a TSB on this and will replace it for free... I have a 2003 Focus SVT with all the same problems.
could be a PCV Valve. My 01' Ford Escort with similar engine needed that recently. Appox 5 dollars easy fix.
My 2000 Focus wagon had the exact same problem and I could hear vacuum sucking in the engine compartment. In the end it was two failures at once: 1) the PCV hose failure like everyone else, and 2) a broken white plastic vacuum cap on the intake manifold.
Some folks have luck simply replacing the odd-sized PCV hose with the Ford replacement, but I was not so lucky. In my case both ends of the PCV line (under the intake manifold and connected to the PCV valve) were bust. So, to replace the entire assembly I did the following:
I bought a "PCV elbow" (by Help! auto parts), hose clamps, 3 feet of 7/16" fuel line, and a replacement PCV valve all from Pep Boys. I bought a 1/2" brass hose connector from Lowe's. I connected the elbow to the fuel line with the brass connector and secured the PCV valve in the other end of the fuel line with a hose clamp. I removed the old hoses and PCV valve and replaced them with the new rig. I had to route the new hose around the engine block, but there was plenty of room.
I still had vacuum leaking and a really rough idle after replacing the PCV line. I found the source of the leak by using a length of hose as a stethoscope. It was a rotten, white plastic cap on the intake manifold. I bought a set of rubber vacuum plugs (by Help! auto parts) from Pep Boys and one was a perfect fit.
After both of these fixes the idle was back to where it was a couple of years ago. Good luck!
the vaccume hose is broken and is over heating you need to replace it for only $500
:if nothing has helped so far, check your egr valve as it probably just needs a good cleanin'. egr stands for exhaust gas recirculation and is usually located between the exhaust manifold and the intake manifold. it gives metered, pre-heated air from the exhaust to the carburetor and generally has carbon deposits on it. it sounds like yours has an abundance of carbon in the passage causing the car to die when your approaching a stop sign or something.Have you tried wires, coils or injectors?? Depending on the mileage, a compression check may be in order also. P0300 is random misfire.. P0301 refers to cylinder #1 misfire and P0306 refers to cylinder #6 misfire. Try the simple things like wires 1st... after the compression check.
Will engine light on 2005 silverado reset after problem corrected?
when you disconnect your battery and reconnect it will reset cumputer
Will the check engine light come on in extreme cold weather?
The check engine light comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, the problem is in the emissions or something that is affecting the effectiveness of the emissions, but other causes can trigger the light to come on, too. To determine the cause, the vehicle will need to be taken to AutoZone or a shop that has an OBD2 scanner, or for 1995 and earlier models, an OBD1 scanner, While a scanner will not give you the magic answer, it will give you a code that narrows down the problem area.
What does it mean when the check engine light on a 1994 Plymouth Voyager flashes 355?
The code numbers are two didgit codes. That was probably a 12 and a 55. 12 is start of message, 55 is end of message. Basically that means there are no trouble codes.
What could cause your skid control light to come on at 75000 miles?
usually the skid control light is not the only light to come on. if there is a check engine light and or abs light on also (i suspect that this is the case) these problems need to be addressed first. for example if the engine has a misfire, the skid control system cannot work properly so the computer trips both lights to let you know you ought to have it checked. when the light is on it will not operate!
Cleaned engine in 1996 Camry check engine light came on how do you get it off?
There are lots of reasons for the check engine light to come on. Some models have the light come on when the odometer hits a certain mileage point for scheduled maintenance. Also, if there is a fault in the firing sequence, injectors, vacuum, or other processes, the light will come on. "Cleaned engine" is a little vague - did you spray it with engine cleaner? If you did, and you rinsed with water, check your electrical connections and dry them out. If you went deeper, and removed the injectors and cleaned them, etc. Check over everything you did. You may have inadvertently clogged an injector or the electrical connection is loose. Find a friend who has a diagnostic computer and hook it up. It may return the fault code you need or it may return no fault code and you can reset the light. You can find the diagnostic handhelds at auto parts stores now and it could be worth it. The garage will charge you to diagnose, fix and reset the light and that could cost more than the device.
What can be wrong when the Service Engine Soon light comes on?
The check engine light (service engine soon) comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, the problem is in the emissions or something that is affecting the effectiveness of the emissions, but other causes can trigger the light to come on, too. To determine the cause, the vehicle will need to be taken to a parts store or a shop that has an OBD2 scanner, or for 1995 and earlier models, an OBD1 scanner, While a scanner will not give you the magic answer, it will give you a code that narrows down the problem area.
Why would the service engine soon light flash on a neon rt?
The service engine light can come on for a variety of reasons. A mechanic can diagnose the specific issue. It just means that the ECU has detected a problem with the emissions system. It may be a simple as a loose gas cap or it may be more serious.
What does the code p0172 on a 99 pontiac montana mean?
Fuel system too rich. Possible causes include, but are not limited to, bad Oxygen sensors, vacuum leaks, bad MAF sensor, bad coolant temp. sensor. Good Luck.
How do you reset check engine light after an oil change on a Toyota Camry 2006?
The Check Engine Light has nothing to do with oil changes. It is on because the ECU has detected a problem with the emissions system.
Try disconnecting the vacuum line at the EGR valve and plug it off with a cap or screw into the hose. The diaphrams get weak with age and seem to cause 99% of the surge issue. If not check the internal coil / power packs.
I have a 97 Ford Ranger, and when the engine light comes on for a while and then turns off. It is because i got bad gas somewhere. What I do is buy some fuel addative and fille the tank with it. Sometimes just one treatment works. Once in a while I have to use two treatments.
