hey guys, coming off a huge rebuild and i've been fighting this idle issue. i've found a number of things that needed attention while tracing this problem but nothing seems to have fixed the underlying cause. i can start the car, it had a misfire but i found the green wire on the ICM was cracked and broke when i tried to remove it. i repaired that. the head is just back from the machine shop. new valve job, guides and seals. valve lash is done, timing is on the 15* BTDC at 0* on my timing light. egr ports are clear. grounds are good. even added a few. but basically, i can start the car and it just dumps. like a massive vacuum leak. but there is no leak. if you give it gas it'll stay alive. i've driven it around the block after several repairs and under 2k it feels like there is no power. then it'll come online out of nowhere! it's the OEM TPS and i've swapped MAP sensors. same issues. fuel pressure is good and all the injectors have been cleaned, OHMED and new seals put in. i'm at my end here. i was hoping putting it back together with some attention would have this thing running like a top but it's undrivable at the moment and i'm having to put a ton of miles on my AP1 because of it. thanks i'm out of ideas.

 

Can you adjust the idle?
SETTING IDLE SPEED

1. warm up engine fully
2. unplug idle air control valve and run engine
3. find idle screw -- usually on the right (passenger) side of the throttle body -- the size if a dime
4. turn IN to reduce speed; turn OUT to increase it -- use correct data -- around 500-600 rpm -- look it up
5. turn off engine and plug IACV back in
6. remove brown 7.5 amp fuse, the closest to the driver in the fuse box under the hood -- for one minute -- resets computer -- the idle speed should move up to 700-800 rpm -- and your car will love the correct speed
7. With each day, your car should run better

Can you run a smoke test to see if there are any leaks? Just an idea?