rough idle

Hello, im a newbie to this forum but know how they work. I am working on my GF's 94 GA SE with the 2.3L SOHC Quad Four. It has a rough idle. As soon as the slightest amount of throttle is given, it smoothes out. I have gone through several cans of ether looking for vaccum leaks and have replaced the IAC, Crank sensor, O2 sensor. i dont know what it is. Do you have to set The IAC when installing it so that it is in the right position. Please help. Thanks JEremy
PS, I smell unburned fuel also and fuel mileage sucks in general lately.
this is really burning my balls. Please help. :banghead:

Hello, im a newbie to this forum but know how they work. I am working on my GF's 94 GA SE with the 2.3L SOHC Quad Four. It has a rough idle. As soon as the slightest amount of throttle is given, it smoothes out. I have gone through several cans of either looking for vaccum leaks and have replaced the IAC, Crank sensor, O2 sensor. i dont know what it is. Do you have to set The IAC when installing it so that it is in the right position. Please help. Thanks JEremy

I replied with the same response to another idle problem. Could it be that it (the idle) is actually set to low? Is that even relevant in cars anymore? I know that a previous car i owned just needed the idle adjusted and it was fine. Not sure if that will help or if it is even a possibility or cause of the problem. Good luck either way man. Later.

Bobby

I replied with the same response to another idle problem. Could it be that it (the idle) is actually set to low? Is that even relevant in cars anymore? I know that a previous car i owned just needed the idle adjusted and it was fine. Not sure if that will help or if it is even a possibility or cause of the problem. Good luck either way man. Later.

Bobby
IAC means. Idle Air Control Valve? motor. Not any cars I know of anymore with an adjustment on them. thanks for the input though.
jeremy

IAC means. Idle Air Control Valve? motor. Not any cars I know of anymore with an adjustment on them. thanks for the input though.
jeremy

I didnt think that they were made like that anymore. The car i did that to was actually an 84...maybe thats why. Sorry i couldnt be of more help.

Bobby

I didnt think that they were made like that anymore. The car i did that to was actually an 84...maybe thats why. Sorry i couldnt be of more help.

Bobby
Yeah, thanks. Not trying to be rude. Just frustrated. Trying to keep this thing out of the shop even though i think it would have been cheaper at this point.

Seeing as how you are running too rich in addition to the bouncy idle, I would've said 02 sensor. But you said you changed it (which one?) - so I would say it could very well be injector related. Either dirty, clogged, or stuck open. I would take it to a shop and have them professionally purge / clean your injectors / fuel system - it may very well be the cure.

i had a 94 se with the same problem only thing i did was change all the hoses around the oil air seperator on top of them engine amd it was all good. at least i think thats what the part was called.