bouncing idle 4kq

[Huw Powell]

very likely your static mixture was reset so the car would run ok with
the leak.  Now it's off because the leak is gone,a dn the ECU guesses
wrong how much air to let in when the idle switch is closed, keeps
hunting the right amount til it gets there.

I went through a bit of this, fine tuning the CIS-E when I retrofitted
it to my 82 coupe.

chris franz wrote:
> 
> Here's the story.   My 86 4000q is having a problem with returning to an
> idle.    Basically, you turn the car on and it idles fine.    You hit the
> gas and get the rpms up and then let off and the idle falls to about 400
> rpms and shuts up to about 1800 rpms and then down to about 600 rpms and
> then up to about 1500 rpms and so on until it evens out and holds an idle.
> This sounds like a vacuum leak to me but it started right after I fixed a
> major vacuum leak (and I can't find another one) and put on a new head
> gasket this week.    I'm confused.   Any advice would be very appreciated.
> ~Chris
> 86 4kq
> 
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-- 
Huw Powell

http://www.humanspeakers.com/audi/

http://www.humanthoughts.org/