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I think otherwise
Posted by Paul R (more from Paul R) on Wed, 8 Nov 2000 18:06:36
In Reply to: Re: Poor warm up driveablity, Jack B, Wed, 8 Nov 2000 15:29:57
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I disagree with the fuel pump theory, especially on your year Saab. Your problem is most likely a faulty AMM unit, or possibly a bad NTC sensor (F.I. Water temp sensor). When cold, the AMM is supposed to enrich/leanout the fuel until the Oxygen senor takes over (several minutes), therein adjusting the correct air/fuel ratio. The older Saabs where notorious for this problem and my '88 had your same systems. A new AMM, properly adjusted, should cure your problem. You should also check the resistance on the NTC senor to make sure it's working properly. Check Townsends webpage for a link regarding the hunt/starve idle (cold start). There should be a link below.
Paul R
88 9kt
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