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Water temp sensor, temp guage runs wild - Cars & Trucks

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  • Cars & Trucks Master
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Well, not knowing what type of vehicle this is, most engines have 2 temperature sensors. One of them will have one wire, this one is for your gauge, and the other will have more than one wire, this one is for the computer. You will need to look around the water passages for your sensors and replace the one with only one wire. If this does not fix your problem you probably have a bad wire or a bad gauge. The best place to start looking is either right into the head, in the top of the intake manifold, or around your thermostat housing close to where your radiator hoses attach.

Posted on Apr 20, 2013

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: Heatng Problem!

Check for proper thermostat operation and make sure coolant is topped of..Make sure ther is no air in cooling system...

Posted on Sep 15, 2008

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SOURCE: Temp guage not working prpert. Stays on H even with car off.

You might want to chk. the connection on the sending unit and temp. sensor thats the way they act when they loose a connection. If that chk. out ok then it would have to be the guage its self thats faulty.

Posted on Mar 02, 2009

MrScary66613
  • 1990 Answers

SOURCE: TEMP GUAGE

There is 1 Relay Switch and a Fuse that Operates this Guage Also. Check in the Fuse Boxes for these first.

Posted on Jan 03, 2009

  • 400 Answers

SOURCE: temp guage not registering

Probably the sensor. I think you can test by removing the wire to the sensor and shorting to ground (with the ignition on). I believe it will show HOT when the wire is grounded. Perhaps an auto parts store can test the sensor if you take it in, or just get a new one to try. I doubt they're very expensive.

Posted on Oct 31, 2009

Testimonial: "thanks will try that"

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SOURCE: where is the water temp sensor located on the

It's not the temp sensor you need, it's the temp sending unit you need.
The sending unit operates the gauge
The sensor activates the electric cooling fans.
If you have the 4.9 6 cyl. it's on the passenger side, in back of the engine, just below the end of the exhaust manifold, it has a one wire push on connection.
On the V8, it's next to, or just below the distributor, with just a one wire push on connection.

Posted on Aug 26, 2009

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TEMP GUAGE


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