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1991 940 idle issue 900 1991

posted by  maplebones on  Sat Jan 26 20:17 CST 2019
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last visit: Thu Oct 23 22:53 CST 2014
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Thanks, Art.

After reading your explanation I seem to recall hearing 'deceleration' somewhere in a previous post, but it didn't sink in. I was unable to connect the dots between deceleration, vacuum, and blow by. It does make sense.

I can see how the LF3.1 with it's variable resistor TPS can gauge throttle or pedal position, but unclear with the 2.4. Perhaps it uses the AMM, or maybe the vacuum on the FPR enriches the mixture making the idle valve compensate.

regards,
Peter

https://www.youtube.com/watch?v=b2ccC4aULow





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New 1991 940 idle issue
posted by  OwenF  on Wed Jan 23 06:29 CST 2019 >


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