I have a weird issue... Randomly my car will idle like crap. Like when you have a MAF sensor going bad. Rev up a little then bog down, then up...ect It will do it most often when I first start it and rev it up a few times, though not every time. It will do it warm or cold... When it does it I can rev it up a little and it will smooth out untill I let off again. But if I "force" it to drive and drive maybe 1/4 mile and come to a stop most of the time it idles fine. I can also shut the car off and restart it and it will idle fine, though if I leave it a while it will most of the time go back to crappy idle.
I have replaced the entire throtle body with all the sensors that are on it(TPS, MAF, IAC). I Have also replaced the EGR. All to no avail. The only code it has thrown is one for the MAF, which I know is good, and the check engin light is not on. I wouldn't think it is the fuel pump because it runs fine otherwise. PCM or Ignition switch? Its not a major issue yet, but very annoying...
Originally Posted by 99PGPGT
