coolant temperature sensor -
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post #1 of 2 Old 02-26-2007, 08:24 PM Thread Starter
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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

2001 5.0 awd exploder - dd
$400 90 laredo xj - beater
91 Limited XJ - missed

Originally Posted by Centrax
There should be a warning label on the sun visor of those H2's "Warning, not intended for off road use." It's not even a REAL Humvee, it's just a Chevy Tahoe with fugly body panels.
thats hilarious
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post #2 of 2 Old 02-26-2007, 08:34 PM
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Location: Vancouver, WA
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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.

2006 Jeep Wrangler X, 4.0 4:11 gears

'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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Derale 15" Rigid Radiator Fan PT# DER-17415, through Summit W/2"X5/8X5/8"" spacer

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