Alerx

Hey everyone, I own an 88 n/a since one year now. My problem is: I start the car, it runs great, smooth idle no hesitation when i drive. But when i turn it off, if i try to start it within the next 3-4 hours (if the engine is still a little warm) it won't rev above 1500-2000 rpm. The idle is bouncing alot. I don't know what could the problem be and i'm asking for your help.

Thanks in advance,

Alex

lduley

iTrader: (1)

Does it clear up after awhile?

If not, my guess would be a leading coil heatsoaking and not working after its hot, you'd have to check spark when its acting up to confirm it

A vacuum leak is also possible

Any smoke coming out've the tailpipe?

Another good starting point would be a compression test when its warm/giving you issues

Alerx

I can start/roll it once it gets cold, i haven't noticed any smoke from exhaust. It runs really great until i shut it off. I was thinking that it could be something like the IACV or AWS since i've removed the upper intake manifold not so long ago..

lduley

iTrader: (1)

Did it happen right after you had the manifold off?

Alerx

The problem just appeared and it ran great after the uim removal and new gaskets. It seems like it's a sensor or something

Aaron Cake

iTrader: (1)

Dirty/leaking injectors, dirty/sticking BAC valve.

But with any idle issue the first step is to eliminate the possibility of vacuum leaks.