Finally figured out my running problem... - Saab Performance Bulletin Board - Saabnet.com
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Finally figured out my running problem...
Posted by Jeff Cunningham (more from Jeff Cunningham) on Wed, 9 May 2001 09:04:30
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I dawned on me this morning.
Problem:
The car runs Really, Really rich in the morning. The plugs foul up and the engine mis-fires.
Once the car warms up, the fuel mixture is normal.
I always thought that it was the O2 sensor not warming up enough and the computer is using a base map.
This is not the case as it turns out.
Answer:
It's the engine temp sensor. The temp sensor is telling the computer to "richen" up the mixture. As the engine temp gets closer to normal the mixture gets down to normal. I'll have to replace it and see if my problem gets any better. The sensor is working, but maybe it's a little out of spec.
Jeff & Royce's SAAB Extravaganza
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