Saab: Odd idle behavior

LauraK wrote:
 

Intermittent nature points to bad electrical connection - maybe
within the DI, maybe the DI plug, maybe the AMM plug, or a
number of others.

If I were you, I'd take a good look around, pull off all the
main connectors one by one, spray with WD, and push firmly back
on. See if it does it again.

--
Grunff

LauraK wrote: 

High rpm could be caused by a vacuum leak. Examine hoses for splits and listen for
air leak noises in the engine bay.

"Johannes H Andersen" <com> wrote in message
news:com... 
miles). 
last 
that way 
The tach 
between 
kitten. 
or was 
listen for 



....happened to me too. Problem in my case was idle air control valve. Before
replacing suggest remove valve, give it a good clean with whatever takes
your fancy (some say petrol, others white spirit, or injector cleaner,
or....). Did this about 12 months ago. Problem was initially made slightly
worse, but was advised to lube lightly (e.g. WD40). Did this - been OK
since. Car is '96 9000 2.3LPT - 132K miles.
Give it a go before replacing the valve - it's not cheap.

Tim H.

"Johannes H Andersen" <com> wrote in message
news:com... 
miles). 
last 
that way 
The tach 
between 
kitten. 
or was 
listen for 



....happened to me too. Problem in my case was idle air control valve. Before
replacing suggest remove valve, give it a good clean with whatever takes
your fancy (some say petrol, others white spirit, or injector cleaner,
or....). Did this about 12 months ago. Problem was initially made slightly
worse, but was advised to lube lightly (e.g. WD40). Did this - been OK
since. Car is '96 9000 2.3LPT - 132K miles.
Give it a go before replacing the valve - it's not cheap.

Tim H.

Pidgeonpost wrote: 

Yes, good point. I changed the AIV on my 93' 9000 21.0 LPT 5 years ago, but it
was probably OK. Never had problems with the AIV since. Logically, it shouldn't
get contaminated if the inlet air is properly filtered and there is no leaks.

Thanks for all the suggestions. I'll try them out as soon as the weather warms
up a bit which it is supposed to do this weekend.
It's still doing it. It's revving high at idle and in first. It sounds like the
idle control valve may be the problem.
I thought it might be some bad gas. The problem started right after I bought
gas at a discount station.
I put some injector cleaner in tonight and it seemed to help a little bit.


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