Will A Bad Egr Valve Cause Rough Idle?

Will A Bad Egr Valve Cause Rough Idle? An EGR valve that is stuck open can result in a fuel-air mixture that is too lean. This can cause a rough idle. A faulty EGR valve may also cause your Check Engine light to come on, in which case a code reader may reveal the culprit. … Continue reading Will A Bad Egr Valve Cause Rough Idle?