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post #1 of (permalink) Old 01-05-2002, 11:01 AM
Frank360
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temperature gauge troubleshooting

My temp gauge decided to not function anymore on the last trip in the sand pits (I have pics coming!!)... I'm supposing the piece on which it connects to at the front of the engine is somekind of thermometer that gives out a charge as it warms up. I have a digital multimeter, what's the quickest way to determine if the gauge or that thermo is dead? Thanks in advance !!

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post #2 of (permalink) Old 01-05-2002, 11:07 AM
Way Outta Control
 
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Re: temperature gauge troubleshooting

Here's a quote from Jaffers page at: http://www.monsterslayer.com/jeep/Gauges.htm

<blockquote><font size=1>In reply to:</font><hr>

The Temp sender on a 232/258 I-6 cyl. engine is located at the top rear of the engine head.
It is near the last head bolt and next to the valve cover and firewall on the manifold side of the engine.
It is upright and cylindrical with one wire attached to its center post.
The sensor's probe extends into the head's water jacket.

With an ohmmeter check the resistance between the post and ground.
It should be:
* 73 ohms Cold - Test when engine is slightly warm. A stone cold engine will read a much higher resistance.
* 36 ohms Beginning of Band
* 13 ohms End of Band
* 9 ohms Hot


<hr></blockquote>

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post #3 of (permalink) Old 01-05-2002, 12:51 PM
Frank360
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Re: temperature gauge troubleshooting

Thanks, I will check that tomorrow.. wish me luck [img]/wwwthreads_images/icons/tongue.gif[/img]

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post #4 of (permalink) Old 01-06-2002, 01:14 PM
Frank360
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Re: temperature gauge troubleshooting

well, I checked, couldn't get a reading on the ohmmeter, must've been doing something wrong, but anyway I discovered that it was only the connector that had melted... I neen another wire and connector and should be fine, cause I managed to get the gauge going by rolling the wire around the post.. thanks again

post #5 of (permalink) Old 01-06-2002, 07:54 PM
 
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Re: temperature gauge troubleshooting

I'd put a ring terminal on the wire and sandwitch it between two nuts on the post. Makes for a lot better connection, and may be easier than finding a connector.
The real question is why did it melt? Just touching something hot, or was there a huge amount of current flowing?

-Derek Schwab
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'83 CJ-7
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