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On my 90' 4.0l,it is located on the drivers side of the lower enine block,just above the motor mount. This is a 2 wire lead, there is also a coolant sending unit located at the back driver side of the head,this will be a single wire feed going to your gauge or idiot light, the 2 wire lead unit in the block is feed for the computer. Hope this will help!!!!!! Carl

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Q: Where is the coolant temperature sensor at in a 1991 4 Liter Jeep Cherokee?
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