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Unread 12-26-2013, 07:06 PM   #1
ErMcG23
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95 YJ Temp Sensor

Here is an interesting one:

I recently purchased a 95 YJ Wrangler which the previous owner had done an engine swap on. I was told the original engine was a 2.5lt, and that was what he had put in there, and is in there now.

My problem is with the temperature gauge. The sending unit for the gauge is there in the wiring harness, however there is no where to thread it into (usually in the drivers side rear of the cylinder head). I've cleaned the area and am positive there is not an old one broken off in the head, and there is nowhere this sensor will thread into!!

I have been told that some models have temp gauges while others do NOT, and just use an idiot light for over heating instead. My guess is that the original engine in the jeep came equipped with a temperature gauge, and the swapped engine did not.

Is there anything I can physically do, or even purchase to get this gauge working?? Any and all feed back would be appreciated!!

Thanks

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Unread 12-26-2013, 07:15 PM   #2
Que89YJ
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The block is from the later model tj or xj that used the one sensor instead of 2. This thread is for installing a electric fan switch but will work to make the gauge work:
http://www.jeepforum.com/forum/f12/f...96/index2.html
or modify the tstat housing so it can take a second sensor there.
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Unread 01-04-2014, 08:55 PM   #3
ErMcG23
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Finally got around to this... decide to go the route of modifying the thermostat housing as I needed to replace the thermostat itself anyways. Engine is finally running at the temp it should be and the gauge works like a charm.

Thank you for the suggestion!

I'd be curious to see if there is an aftermarket company who makes modified thermostat housings for something like this... I could have sworn I've heard something similar like this before?!
img_1438.jpg   img_1439.jpg  
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Unread 01-04-2014, 09:12 PM   #4
Que89YJ
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Great! Why not just drill and tap the stock one.
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Unread 01-04-2014, 09:34 PM   #5
ErMcG23
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That's essentially what I did... ended up buying a new housing, (for only $15) and drilled and tapped that. Wanted to have an extra one just in case I cracked it while drilling or if it leaked you know??
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Unread 01-04-2014, 09:35 PM   #6
Dake
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My replacement motor did not have a place for the temp in the head. I just put it in the block. but I like this idea at the thermostat.
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Unread 01-04-2014, 09:38 PM   #7
Que89YJ
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Where in the block?
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Unread 01-04-2014, 09:51 PM   #8
Dake
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Right under the exhaust manifold.

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Unread 01-04-2014, 09:53 PM   #9
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Its cold out these are the best picks got for now

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Unread 01-04-2014, 10:25 PM   #10
Que89YJ
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Great pic. So it's in the rear about 1/2 way down the block. Did you have to tap it?
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Unread 01-04-2014, 10:34 PM   #11
Dake
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No it had a pug in it. A brass plug I think I did this in 2002.
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Unread 01-04-2014, 10:38 PM   #12
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If I remember right it was an allen head plug. It was me n a buddy and lots of beer doing the engine swap. so some of the details are fuzzy.
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