I Need Some Oppo Mechanical Expertise.

"Timmy - MINI With a Big Blower" (timmyturner) 03/04/2014 at 12:31 • Filed to: None

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I recently bought a 2000 Mustang GT with 98k on the clock. The other day when I was just driving it around the temperature gauge just quit working. It's not overheating or anything of that nature, it just doesn't read. Any help would be appreciated!

Party-vi > Timmy - MINI With a Big Blower 03/04/2014 at 12:35

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Gauge is broken or send unit is acting up.

Aaron James > Timmy - MINI With a Big Blower 03/04/2014 at 12:36

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Probably a bad sending unit, if it is you'll want to replace it because the computer will always think the engine is cold and run it too rich. Check with the mustang forums, search around a little and I bet you'll find a more definitive answer, as well as how to troubleshoot the problem.

CAR_IS_MI > Timmy - MINI With a Big Blower 03/04/2014 at 12:36

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Step one: Check / replace the thermostat.

Step B: check the sender unit (connections may be loose or sender unit may be bad), not sure if these use a dual sensor one for the ecu one for the gauge.

instruction 3: Check the inputs to the gauge to verify you have voltage coming into the gauge itself

davedave1111 > Party-vi 03/04/2014 at 12:36

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Or a plug/wire has disconnected itself.

Paul, Man of Mustangs > Party-vi 03/04/2014 at 12:36

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Easy thing is to test the sending unit. Just unplug it and measure the resistance when it's warm. Or replace it just to be sure. I can't imagine they're too expensive.

Arch Duke Maxyenko, Shit Talk Extraordinaire > Timmy - MINI With a Big Blower 03/04/2014 at 12:43

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Check the Fuse first. Then what everyone else is saying.

Timmy - MINI With a Big Blower > CAR_IS_MI 03/04/2014 at 12:57

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I'll give it a go this evening. Thanks!

Timmy - MINI With a Big Blower > Paul, Man of Mustangs 03/04/2014 at 12:57

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They are only 20 bucks, but I'll look into doing that this evening! Thanks!

Timmy - MINI With a Big Blower > Aaron James 03/04/2014 at 12:58

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Hmm, didn't know it would run it rich, the more you know! Thanks, I'll look into it.

Aaron James > Timmy - MINI With a Big Blower 03/04/2014 at 13:24

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I'm not 100 percent sure on that with the modular motors, not sure if there are two temp sensors or just one. Should be able to tell with a scan tool what temp the computer is reading. Do check with the mustang guys at a mustang forum to see if this is a common problem with a simple solution. Good luck with it.

Timmy - MINI With a Big Blower > Aaron James 03/04/2014 at 21:12

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It turned out to actually be the motor in the gauge cluster. Simple fix with just a bit of soldering and the part seems cheap enough.

Aaron James > Timmy - MINI With a Big Blower 03/04/2014 at 23:00

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That's great, glad it's an easy fix.