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low idling

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vitch:
well....I ended up adjusting the idling speed and its fine.

cheers

vitch:
Hi theres.

my Saab 1990 900i 16v non turbo is having problems with rough idling and stalling. This happens hot or cold but I think worse when cold. The check engine light comes on but as soon as you step on the accelerator it picks up and the light goes off. the car drives fine and smooth and doesn't drink too much.... I get on average 29MPG which aint too bad for these I think.

I've checked all the obvious vacuum hoses and replaced 2 as 1 was definately split for sure and the other just fell apart. I dont know if I've missed any but I think I've got them all.

It always idles low but not always enough for the check engine light to come on I reckon at best 500 RPM.

When it's really cold though it does tend to rev higher on first start but after a few mins goes bad....

Could it just need the idling control bit adjusting? if so how would I do this, there is a kind of screw type thing protruding on what I think is the throttle body...should I give this a twist?

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