crazy water temp. guage 2005 Mustang GT - Ford Mustang Forum
 
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post #1 of 6 (permalink) Old 08-25-2010 Thread Starter
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crazy water temp. guage 2005 Mustang GT

whenever it gets cold (below 50) my temp. guage acts strange...it'll stick down in the 6:00 position, or at 8:00 position or wherever it wants to stay at....the car does not run hot,. it's just the damn guage...someone said it my be the guage motor ???...anyone have any clues for me ???

thanks
john

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post #2 of 6 (permalink) Old 08-25-2010
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Are you sure it's not running hot? Have you hooked up a handheld tuner to it and checked the coolant temp?

It's possible it's the stepper motor for the gauge, mine acts up but for me it's when it gets hot in the car.

I'd check the actual coolant temps first, then go from there.


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post #3 of 6 (permalink) Old 08-26-2010
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The stepper motors are known to go in these clusters.

You can find replacement motors on eBay.

-Stangstta
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post #4 of 6 (permalink) Old 08-26-2010 Thread Starter
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thanks for your info...i do have a hand held and i'll check it out !!!
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post #5 of 6 (permalink) Old 08-26-2010 Thread Starter
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thank you for your help.....i think it's probably that stepper motor even though i didn't even know it has a motor..... sounds like a winner to me...once again thanks bunches
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post #6 of 6 (permalink) Old 08-27-2010
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Is this a 2005? I had the same problem on my 2005 Mustang GT. Mine started out with the temp gauge sticking at cold. When the problem spread to the tach and it was off about 1500 rpm off, I had to get it fixed.

When you turn the car on the gauge needles swing back and forth to establish the initial position. If the stepper motor is sluggish, the gauge may find zero just about anywhere in the range. The gauge needle still goes up and down, but the zero point could be way off. Cold weather makes it worse.

I bought the stepper motors from a guy on ebay ($7.50 each) and replaced them myself. Not a difficult job if you are comfortable with soldering and desoldering and removing gauge needles, but quite tedious. The same guy will repair your cluster if you mail it to him, but you lose the cluster for a week or two.

Bruce
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