I recently replaced the converter on my car with just a straight pipe. Later on the car started running rough and stumbling and had no power. I checked for codes and got a 32. Took off the EGR and cleaned it out and it ran fine. Couple days later back to 32. Just put on a new EGR valve and it is still running rough and stumbles when you try and give it gas. Code 32 is gone and now get a 33. Replaced the MAP with another and now no 33 but car is still running rough and stumbling. Any ideas? Thanks for any help.

 

I aint no expert , but I have found one code could mean other than what it was designated for . Did it ever get better at any time ? I would also check out the O2 ...adn the Maf relays on the firewall .

 

I replaced the O2 a couple months ago. I have a MAP not MAF. I'v tried replacing the MAP but no luck, sill have code 34. Is there a way to trouble shoot the MAP and does it have a relay like the MAF does. Thanks.

 

what about the EGR solenoid? it might be sticking letting the egr hang open a little, a quick test would be take the vacuum line off the egr valve and plug it then try it.

 

TEST YOUR TPS AND YOUR IDLE CONTROL MOTOR. THEY WORK TOGETHER AND IF ONE IS ON THE WAY OUT IT WILL CAUSE A ROUGH IDLE CONDITION.

 

Turned out to be a bad injector. The car would start and run fine. Once I gave it any kind of throttle it would die. I ohmed the injectors and found one bad. I disconnected the injector with the engine running and I was able to give it throttle. I ordered a new set of injectors from summit and it runs fine. I was still getting the EGR code. I took off the straight pipe I bought to replace the cat, and now no more problems. Guess I'll sell it on ebay. Hard to believe that one bad injector would make it run that bad.

 

I wnet through teh EXACT same thing on mine . One went .... then it woudl barely idle ...adn throttle it died.

The reason it effects it that much is . We use a batch fire setup .... 4 injectors fire at the same time . So one was out .....that took the other 3 out with it . Kinda liek the old christmas tree lights . glad you got it sorted out