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Thread: what is this call???

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  1. 03-20-2008, 12:25 PM #1
    B18C5-EH2
    B18C5-EH2 is offline
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    That's the engine coolant temperature sensor, or what some might call a TW sensor.

    Without it the car can run pig rich because the ECU lacks the input to know how hot the coolant is. It can also make recranking the vehicle very hard after the engine is warmed up.

    The sensor that tells the guage cluster is a temp sending unit, and has only one wire.
    Last edited by B18C5-EH2; 03-20-2008 at 03:45 PM.
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