amkaluta

I just bought another AP1 s2k it has 142,000 miles and it is idleing rough runs good only when its idleing is the problem. I had it checked out and the code said it was a misfire. I changed injectors, spark plugs, coil packs and even put STP fuel cleaner in it still same thing!!! I even had compresion check and its good... Any advise please let me know thanks.

s2klariat

Have you checked your map sensor? It's the sensor on the intake manifold right by the throttle body. take it off and clean the connections and see if that helps. Search "map whack"

amkaluta

yeah my map sensor looks good i disconneted it and connected it back should i change it?

FASTSIIK

Try the "map whack", clean your throttle body, clean IAC valve, and valve adjustment, just a few possibilities.

amkaluta

tryed to whack it and still same thing!!! what you mean clean throttle body take it off? what is the IAC valve where is it?

TelosHedge

did you try o2 sensors and vacuum lines yet? might be worth a shot.

amkaluta

what vacuum lines? seem to be good

TelosHedge

check em all, since you're on a rampage. 150k worth of PCV can be some serious gunk build up

id honestly lean more towards 02 sensors or IAC though.

amkaluta

where is the IAC? sorry what is the full name?

amkaluta

and how do you reset ECU? thanks for all help