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?

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try changing the d.p.f.e. cost about $35,i just replaced one on a 2003 mercury mountaineer.
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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 m

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 ar

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 f

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.

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

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 p

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
In Check Engine Light

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
In Ford Windstar

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 fr
In Emissions and Exhaust Systems

How do you reset check engine light after replacing egr valve?

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 li