95 Mustang Water Temp Gauge Not Working - Vintage Mustang Forums

 
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post #1 of 4 (permalink) Old 04-14-2009, 10:36 PM Thread Starter
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95 Mustang Water Temp Gauge Not Working

I have a 95 Mustang GT. The water temp gauge stopped working on it last fall before I put it away for the season. Well now I need to get that working.I replaced the sending unit and still does not work. So I took the cluster out. The wire from the sending unit checked out ok. So then I check and the ground wire is fine as is the hot wire. Then checked out the printed circuit board and it is fine. So I am donw to the gauge itself or there is a small circuit board that snaps into the gauge cluster on the bottom. Anyone know how to check out either of these to find out what one is bad?

69 Mustang Sportsroof 351W 5 Speed
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post #2 of 4 (permalink) Old 04-15-2009, 12:57 AM
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Re: 95 Mustang Water Temp Gauge Not Working

The circuit board that snaps in is the anti-slosh module for the fuel gauge and has nothing to do with the temp gauge operation.

The best way to test the circuit is to use a variable resistor - one side to ground, the other side to the sending unit wire, test 9.7 ohms at the hot mark, 74 ohms at the cold mark.

bigB427
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post #3 of 4 (permalink) Old 04-15-2009, 03:49 PM
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Re: 95 Mustang Water Temp Gauge Not Working

This may be completely wrong, as I've never messed with a '95. However, I have a 5.0 in my '89 and a stroked 5.0 in my '65 and both of them have 2 coolant temperature sensors. One runs the gauge. One tells the computer what's going on.

If a '95 is the same...You replaced the right one? Right?

Phil
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post #4 of 4 (permalink) Old 04-15-2009, 10:43 PM Thread Starter
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Phil yes I replaced the right one. Today I checked out everything again. Well everything but the gauge itself. I could not find a variable resistor in town to check it. So I am going to just try to find a different gauge and try it. Worst part is the gauge is longer sold by Ford so it looks like I buy used.

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