Re: Rough Cold Start '86 9000T 5spd - Saab 9000 Bulletin Board - Saabnet.com
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Re: Rough Cold Start '86 9000T 5spd
Posted by Trobinson9kT (more from Trobinson9kT) on Fri, 11 Jun 2004 06:26:42
In Reply to: Rough Cold Start '86 9000T 5spd, 9000Turbo, Thu, 10 Jun 2004 19:21:51
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Andrew, First question: did this come on suddenly or is it something that's gotten worse over time? Second: how are you so sure the AMM is good? From what I've read on these boards and at Townsend Imports site it isn't always easy to tell (have you checked Tom Townsend's site? It's Townsendimports.com). I know that for the cold start problems I've had on two '87 9kt's it was the AMM both times. If your fuel pressure is good and you have spark plus no vacuum leaks then this is the likely culprit. The only other thing that comes to my mind is something mechanical with the valves or rings. These engines idle very smoothly when things are working right, but if you say have a bent valve or two (experienced this I have) or valves are not sealing you will have a very rough idle.
Tom R.
'87 9000T 178,000+ miles
'87 9000T 308,000 miles - parts car
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