Quote:
|
Originally Posted by badgerraf
Not sure if I have two different problems here. But I have a 1997 GP GT with the 3800 series and it has begun to misfire at idle. It does this sparatically once it has warmed up and it is just sitting at a stop light. It kicks on the Service Engine Soon light and I read the code on it and cylinder two is acting up. It also says there is a problem with the throttle position sensor. I was planning on new plugs and wires anyways, but could the sensor also have something to do with the misfiring? I understand the concept of the sensor, but how important is it and how does it work? Do you think I have two seperate problems here? Thanks
|
I think you are looking at 2 seperate problems.
Since you have a cylinder specific misfire, I would start there.
Possibility of ignition or fuel related. I would start with ignition because that is the easiest .
You can start by swapping plugs and wires and see if the misfire goes away.
In my experiance with an idle misfire, I would look towards the fuel system (possible lean injector).
With the TPS, it is an important imput to the PCM It is a simple 3 wire potentiometer and diagnosis is fairly straight foreward.
The important thing was the code..was it a performance, low or high voltage code?