idle

[jw 325ic]

fixed- mods delete

[lordofthewaters]

1. check for vac leaks
2. check for vac leaks
3. check for faulty O2 sensor
4. check for faulty charcoal canister purge valve
5. check for faulty coolant temp switch/sensor
6. check for faulty fuel pressure regulator
7. check for faulty ecu
8. check for faulty incorrect timing
9. check for vac leaks

[DCColegrove]

First check the DME connections and check for vacuum leaks.

If it happens only when it's warmed up it's probably the O2 sensor.

[wagonizzle]

And after you're done doing all of that, check your TPS output in the closed throttle position, realize that is the problem, adjust it back to spec for a cost of $0 and 30 minutes. At least that's what I did.

[jw 325ic]

It surges when it's cold also, but whenever we either unplug, clean, or switch out ICVs it idles perfectly for a couple of minutes. So, it's not just when it's warm. I'm gonna diagnose everything hopefully tomorrow. tonight ill atleast put the old ICV back in because it wouldnt stall while driving with that. i know i need to check all the vacuum lines but i dont have a good list of those. all i know is anything coming off of the afm boot, and the valve cover breather hose. im kind of ruling out the o2 sensor because it surges at cold. the TPS is the cable and "screw" deal on the throttle right? where you adjust the tension etc...? i messed with it once and tighten it some, but all it did was made it idle at a grand. dont remember if it surged then or not.

[wagonizzle]

the TPS is the cable and "screw" deal on the throttle right?

Wrong. You're not supposed to mess with that screw. The TPS is under the throttle body. Get a Bentley.

[jw 325ic]

nah i just did some searching and found out about the tps.

[lordofthewaters]

Get a Bentley.

+1

The best single investment you can make.