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I found the problem !!!! 900 1993

posted by  david hunter on  Mon Jun 22 15:25 CST 2009
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last visit: Mon Jun 30 22:10 CST 2014
[RELATED]

Installed new manifold gasket today. Of course engine now runs beautifully, vacume at idle is 18", O2 sensor output transitions as it should, no more smelly exhaust, smooth idle. Shannon and Walt, thank you so much for your suggestions.

The shifting is much better but not where it should be. Have not yet checked the load signal. That is for tomorrow.

Anyone know about ECU "learning". As I understand it means the ECU learns the characteristics of the engine via the sensors and adapts the injector and spark mapping accordingly for best performance. I am sure with what I have done there is some relearning to do. How fast does that happen. I suspect it takes a certain number of trips and temperature cycles. I also suspect that the 'learning" process will have an effect on the load signal.

Walt, Shannon. Anyone?
--
David Hunter






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