Yeah so, when I first start it up the car runs great...but once it warms up and i'm at idle..the rpms will flutter from about 900 to 1900...then back down to 900 then up to 1900..you get my drift. I've ordered a new TPS. I have no noticeable vacuum leaks, new plugs and wires. Lets say when I install the new TPS and it doesn't correct the problem, where should I turn??? I plan on cleaning out the throttle body and replacing my fuel filter...it's time. Let me know what you guys think. BTW I do have a bad o2 sensor.....?

 

You may have wasted the money on that TPS. Look at the IACV. Also make sure there is no air in the system.

 

What codes are thrown?

Have you bled the cooling system?

When the idle problem is happening, does covering the hole inside the throttle body leading to the IACV make the idle surging stop?

 

Your exactly right, I must have over looked it, had a vacuum hose off the iacv, must have done it when i was putting in the new headlight wiring harness Well for the new TPS anyone need one...ha. Oh well good to have around j.i.c. Thanks