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Unread 02-26-2007, 09:24 PM   #1
scubaguy19
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Join Date: Feb 2004
Posts: 416
coolant temperature sensor

what does the coolant temperature sensor do, and what happens when one of these goes bad?? i'm working on a 90 4.0 cherokee 4x4, and i'm having intermitent starting problems, one day it'll start, the next day it wont, its weird i think it just likes me throwing money at it

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thats hilarious
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Unread 02-26-2007, 09:34 PM   #2
coppertop71
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Join Date: Jun 2004
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In short the coolant sensor with work the fuel mixture until operating temp is reached.

weird starting problems like yours could be the Crank sensor going bad. I have a 90 and when mine would do the same thing I could disconnect the sensor, cycle the key to run then off and reconnect the sensor and it would start again.

Here is a link for a manual you wont find in the stores its show how to test all the sensors for the renix system.

http://www.pirate4x4.com/tech/billav...ion_manual.pdf
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'90 Cherokee XJ,W/'91 4.0L reman/ 3.5" RE lift, W/31" M/S tires, 4:11 Gears W/Speedo gear change/ Aluminum Coolant Tank
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