check engine light
#1
check engine light
I have a 1997 Acura Cl 2.2. The check engine light is on for the last six months. I changed the egr valve and did a full tune up. Still no luck. Please let me know if I can do anything else.
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#9
Originally Posted by clman99
it say insufficient egr flow...this was the same code before changing the egr valve and cleaning the egr passage.
When engine is fully warm, raise idle speed to ~1500 rpm, and remove the vacuum line to the EGR valve. There should be vacuum available and you should see valve bellows move when you remove the vacuum source. If vacuum is available and valve is moving, then EGR flow is blocked somewhere; EGR valve, EGR passages, EGR manifold, EGR manifold ports to intake manifold.
good luck
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