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Re: Bad FI Computer? 200 1989

posted by  someone claiming to be Dave Stevens on  Wed Nov 29 11:39 CST 2000 [RELATED]

You should do a quick check for a faulty AMM. With KEY OFF, disconnect the electrical connector on the AMM. This will force the FI ECU to ignore most of the sensor inputs and operate the engine in "limp home mode". Start the engine. It may not run well (especially at higher rpms), but if it runs better than before then a bad AMM is a likely culprit. If that turns out to be the case then you should also investigate the themostatically controlled warm air flap in the air filter box (see the FAQ and/or archives for more on this).

When LH2.4 ECU's (of the failure prone 1989 vintage) go bad the symptom is usually a complete no start condition. Your problem is hopefully elsewhere. You don't want to know what a new ECU costs.





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New Bad FI Computer? [200][1989]
posted by  someone claiming to be Joe Doniach  on Wed Nov 29 09:14 CST 2000 >


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