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Old 05-23-2013, 05:28 PM   #1
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Temp gauge issues

My 94 yj 1.5 L temp gauge stopped working. Went to replace the sending unit and found it broke in half. After I put the new one in the gauge jumps all the way over to 260 deg when I just turn the key on. Almost like it's backwards, any ideas?


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Old 09-09-2013, 04:57 AM   #2
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Anyone?

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Old 09-09-2013, 06:32 AM   #3
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One option is to use a multimeter and shoot for resistance through it. If it grounds out it could just be a bad sending unit out of the box. I have a 95 with the 2.5 and my temp sending unit is much skinnier at the sensor. Could be possible also the parts store gave you the wrong one and its output voltage is different tat what's req. all else fails you can pull the dash apart and shoot for voltage behind the gauge. See if what's on the gauge matches the voltage.
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Old 09-09-2013, 09:22 AM   #4
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When I was trying to isolate an issue with my temp. gage, someone told me; to check the gage, attach your sensor wire to a good ground and your inside gage should peg to max. reading. I did not try it, so I can't say if it is true or not, but the one thought that came to mind is, if there is some truth to it, could your sensor wire be going to ground somewhere resulting your gage to read max. Just a thought. . . .By the way, my problem was opposite yours, gage would read, but would not read much over 100, turned out to be the sensor. . . .
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Old 09-14-2013, 10:57 AM   #5
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Thanks guys digging into finding the problwm now.
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