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Unread 01-27-2011, 10:17 AM   #1
LandRover
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Temp Guage not working...not the sending unit

So my temperature guage isn't working in the new XJ... I pulled the sending unit out of the old one and swapped it in...no dice. I know that unit is good becuase the guage worked fine in the old one. What else can I check? Is there a fuse for that? I assumed it had to be the sending unit.

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Unread 01-27-2011, 01:15 PM   #2
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Quote:
Originally Posted by LandRover View Post
..... I pulled the sending unit out of the old one and swapped it in...no dice. I know that unit is good because the gauge worked fine in the old one. .......
What old one ?


Check the wire harness and wire connector for corrosion or damage.
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Unread 01-27-2011, 01:21 PM   #3
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Sorry, that was totally unclear. The "old one" is my '99 XJ that my wife drove into a tree. I'm sure the sending unit was good because the guage worked fine in that XJ. So when I put that sending unit into this one, it didn't work.

the harness and connector look great...no corrosion or issues that I can see.
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Unread 01-27-2011, 01:42 PM   #4
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The sender inputs to the PCM, the PCM uses the data to run the engine and to display on the dashboard.

So the problem is either the sender, the wires, or the gauge in the instrument cluster. You could swap the 99 cluster into the new Cherokee.
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Unread 01-27-2011, 02:26 PM   #5
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well, check the cluster.
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Unread 01-27-2011, 04:14 PM   #6
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It's so cool having a spare everything. I highly reccomend it. I'll check the cluster next. Hate tearing the dash apart though. What a pain.
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Unread 01-27-2011, 04:39 PM   #7
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It's so cool having a spare everything. I highly reccomend it. I'll check the cluster next. Hate tearing the dash apart though. What a pain.
The cluster really isn't bad on a 2nd-gen Cherokee. It helps to lower the tilt wheel ALL the way down.
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Unread 01-28-2011, 08:36 AM   #8
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If I swap the clusters will the odometer reading stay the same, or will I see the reading for the jeep the cluster came out of? where is that info stored?
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Unread 01-30-2011, 09:30 PM   #9
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I swapped the clusters and found out that the odometer reading is apparently stored in the cluster. I got the reading from the old jeep.. I want to swap the old motor (93k miles) into this jeep this summer, so I decided not to use that cluster...i'll swap it in when I do the motor and have an accurate reading on that motor. The temp guage did work though...

I put the original cluster back in and the temp guage magically worked on it too...loose connection apparently. Sweet.
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