It has been idling funny like it is misfiring. I replaced the Idle air control valve. Runs a lot better when driving. But in park it runs choppy as if it has a lope to the exhaust like if it has aftermarket cams in it. So I cleaned the TPS, MAF, and checked for vacuum leaks with throttle body cleaner. Nothing.
The only thing I can think of would be a cam shaft position sensor, crank shaft position sensor, a bad injector, or plugs. But no check engine light has came on or anything.
So no lights, no codes, what else could it be?
have the same problem?
Monday, November 28th, 2016 AT 12:42 PM