Equally as likely to be a bad ECU... - Saab 900 Bulletin Board - Saabnet.com
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Equally as likely to be a bad ECU...
Posted by GregD (more from GregD) on Wed, 22 Aug 2001 22:36:26
In Reply to: aic test and code scanner, saabguy, Wed, 22 Aug 2001 09:48:53
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if not more so. How does it behave on cold start with the AMM unplugged? High revving idle is a common symptom in LH2.4 ECU failures. Can we assume all the obvious things like vacuum leaks have been ruled out? If the idle falls with the AIC valve unplugged then it is properly responding to an incorrect signal from the ECU. If all inputs TO the ECU are correct but it's output isn't, then the ECU is suspect.
posted by 12.90....
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