Failed e-test

[bigdaddy12003]

I just recently purchased a 95 ga with a 3.1L sfi. I took it in for an etest and it failed. the results where high NO, and the pamphlet said egr inoperative/defective, lean air/fuel mixture, and inoperative catalatic converter (3 way catalyst only) So i got the egr valve replaced for $328 and i am just wondering if anyone else has had the same issue. I need to get it plated. thanks to all those who reply. And i must mention that the old egr valve has 3 solenoids and 2 solenoids had problem and was wondering if thats the full problem.

[maxwedge]

Originally Posted by bigdaddy12003

I just recently purchased a 95 ga with a 3.1L sfi. I took it in for an etest and it failed. the results where high NO, and the pamphlet said egr inoperative/defective, lean air/fuel mixture, and inoperative catalatic converter (3 way catalyst only) So i got the egr valve replaced for $328 and i am just wondering if anyone else has had the same issue. I need to get it plated. thanks to all those who reply. And i must mention that the old egr valve has 3 solenoids and 2 solenoids had problem and was wondering if thats the full problem.

Blocked egr passages could be an issue also, manually powering up ( grounding the solenoids) should cause the engine to stumble or even stall when the egr is fully actuated, if not there are additional problems. Have you retested it yet?

[bigdaddy12003]

I have replaced the egr valve and was just wondering if there are any other issues i could try. My car is going in for an etest this week. Thanks for your reply. I am hoping its good to go cause i just put a new one one so i will have to see.ty.

[GTP Dad]

Remove the EGR again and clean the passages to the engine. They will clog and cause the same problems as if the egr was not functioning. I would do this before trying again. Simply use throttle body cleaner to clean the carbon out of these passages. I removed the phlenum on one I cleaned and sprayed the entire phlenum to get the carbon out. A gun brush will also help to clean these passageways if you don't want to remove the top end. Good Luck!