Ford Contour Problem Report
Ford Contour Check Engine Light Due to Plugged EGR Passage
The Check Engine Light can illuminate with codes due to the lack of EGR (exhaust gas recirculation) flow caused. This is commonly a result of a clogged passage in the intake manifold. To correct this problem, the EGR valve has to be removed and the passage cleaned thoroughly. Partial restriction of this passage can cause smog test failures for the NOx emissions without causing a drivability symptom.
still going on.
codes 420 and 430 cleaned and replaced o2 and fine for awhile then it starts all over again.This is a constant problem and I am tired of. - Visitor
Check engine light came on and needed to replace oxygen sensor and vacuum solenoid/EGR valve solenoid. - fwoodward
have not repaired 3 months until inspection - Visitor
check engine lite stay on ,idel rough when air is on
I have replaced all three 02 sensors and my engine light came on again and the test shows it to...
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