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Q: where can i find the pcm and where is the ect sensor on 1999 Ford Expedition

do you have to dismantle the whole truck to get to the ect sensor
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The electronic coolant temperature sensor is in the cylinder head on the driver's side in toward the center of the valley front of the engine. $30 switch .6 hour to replace.
I am sorry I don't know where the PCM is.
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