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What Are the Symptoms of a Bad EGR Valve?

Answer

The symptoms of a bad EGR valve include a rough idle and an increase in fuel consumption. Overheating and pinging are other symptoms of bad EGR Solenoid. A knocking sound can also be heard.
Q&A Related to "What Are the Symptoms of a Bad EGR Valve?"
An EGR valve works by recirculating used exhaust gases into your engine. These gases contain unburned fuel but very little oxygen, and they're very hot. A hot intake charge carries
http://www.ehow.com/about_6157262_symptoms-bad-egr...
Stuck shut will set a code eventually, but very occasionally. Stuck open idle poor, poor fuel economy, engine will speed up id one spark plug disconnected.
http://wiki.answers.com/Q/What_are_symptoms_of_a_b...
An EGR that is stuck opencan very well cause the symptom you are decribing, including surging at idle and poor acceleration. Failure of GM EGR Valves is quite rare. A common problem
http://www.fixya.com/cars/t7121468-95_check_s_10_b...
Symptoms of a bad egr valve on a car will include mis fires,
http://www.chacha.com/question/what-are-the-sympto...
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