got it to start finally.

it starts and immediatly redlines.

is there some kind of timing poblem? i dont understand what my cam positioning sensor is doing. if i put it inline with block like it usually is then no start but when its cocked sideways it rough starts and pegs the tach

 

ok so what im gatering is that its an electrical connection problem, or something sensor wise, thats telling the pcm to make it go WOT.


could i have my 02 sensors wired wrong? or would that even make it do that?

 

Sounds like a bad vacuum leak.

 

vaccume leak wouldnt make it red line like i was holding the throttle WFO while starting lol but thanks for tryin...

its gotta be somethin stupid that is messed up. i have no ideas.

 

Uh yea a really bad vacuum leak will make it redline at start-up b/c it completely bypasses the IAC. Is your intake seated correctly?

 

pretty sure... how would i tell if its not?

thatd be a horrible vaccume leak,

 

i did clean my throttle body with carb cleaner before installing it, could i have messed up the IAC that way?

 

No, carb/throttle body clean is safe, brake cleaner is bad. Can check with a feeler gauge or visual with mirror and light. What intake and header are you running on it? I had this issue with APN header on 99+ intake

 

stock and stock. cleaned em good before i installed em. i got a good gasket set but the intake/exhaust gasket was a soft one. is this my prob?

 

could i unplug my IAC and see if it still happens or would that be bad?

 

Just curious why? Ive never used brake cleaner on a TB/iac cause TB cleaner is found everywhere in my garage. Wondering what would happen if you did though?

 

I dont see how it would hurt since it already jumps to red line.

 

Brake cleaner degrades plastics and rubbers, also can etch the metal if its finely machined softer metal

 

ive heard that brake cleaner ruins em... dont know why. thats why i used carb cleaner. figured it was ok, guess i was correct.

i guess im gonna take my intake off and put it back on... unless i can get some other input soon. i wouldnt think thats the reason though, if i do all that work and it still happens ima be pissed lol

 

Thanks. Good info to know.