Re: 87 8 valve idle problems cold start - Saab 900 Bulletin Board - Saabnet.com
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Re: 87 8 valve idle problems cold start
Posted by Mitja (more from Mitja) on Mon, 15 Aug 2005 12:23:42
In Reply to: 87 8 valve idle problems cold start, scott, Mon, 15 Aug 2005 11:01:19
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I think the 5th injector sprays ONLY when the starter is operated & thermo-time switch is closed (cold enough and for 12 seconds or so). Otherwise it would flood the engine.
I would look if the aux air valve (the one beside the thermostat housing) is opened when cold. It should be closing slowly as the engine is warming.
The second suspect would be the warm-up regulator, mounted undet the thermostat housing. I guess you will need pressure gauge to test it.
Good luck, lets see what others have to say!
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