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Re: Runs terrible - John Sargent Might Know Too... 700 1987

My point is: You have an '89 engine in an '87 car. Take the passenger side lower cover off and look at the ECU. It will have the version numnber. Early cars had LH 2.2, later cars had LH 2.4, with the OBD-I system and a diagnostic connector in the engine compartment including a small LED. It's like comparing apples and peanut butter. In other words, you cannot mix and match. The garage that installed the engine presumably knew this and switched temp sensors.






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