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1 2 3 Fault in signal to/from coooant temperature sensor 200 1992

Fault in signal to/from coolant temperature sensor

Replaced sensor (Bosch number 0 280 130 026)
replaced connector to sensor
replaced ECU 0 280 000 561 with 0 280 000 591
The resistance from pin 13 on the ECU conector to pin 2 on the IG module is 2,715 at 70 degrees F. and drops down to approximately 284 ohms at operating temperature.

I still have a check engine light ( which can be cleared however returns with in a few minutes with the 1 2 3 code).

I did not replace the Ing. module 0 227 400 169

Any assistance would be greatly appreciated

Thanks

Dave






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