way to test a "Low Coolant" sensor?? - Ford Mustang Forums : Corral.net Mustang Forum

 
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post #1 of 10 Old 10-31-2005, 04:08 PM Thread Starter
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way to test a "Low Coolant" sensor??

Is there a way to see if the Low Coolant sensor is bad? My overflow bottle is full, I cleaned both contacts on the sensor itself and still my "Low Coolant" light is on. It's in a 1995 GT-




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post #2 of 10 Old 10-31-2005, 05:26 PM
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If you find out, let me know. My 92 has the same problem. Low coolant light comes on, and if I take the sensor out and sand the tips clean, it works until the next day.

I'm pretty sure the answer is a new sensor, so I really haven't done anything about it except cheeck the overflow bottle occasionally to make sure it really isn't low.


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post #3 of 10 Old 10-31-2005, 11:07 PM
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I too have the same problem with my 92. I just ignore it but I am considering jumpering the plates just to make the light go out.

All bleeding stops eventually.
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post #4 of 10 Old 11-01-2005, 09:45 AM Thread Starter
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I tried doing that and the light stayed on Might just break down and pick up a new one. Seen 50Resto had some decent prices vs. corner parts store & dealership.

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post #5 of 10 Old 11-01-2005, 11:15 AM
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dang, there goes that idea.

All bleeding stops eventually.
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post #6 of 10 Old 11-01-2005, 03:56 PM
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My 90 does the same damn thing LOL. I give up and just let it come on and go off as it wants. I have tried to clean it and that works for about an hour or two. There has got to be a way to get it to work the right way.

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post #7 of 10 Old 11-02-2005, 12:14 PM
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I've got the same problem and I just checked on 50resto... why the heck is the 90-93 sensor $20 more than the pre-90 sensor?! I guess it just comes down to what's more annoying... having a dummy light that's constantly on or paying $70 to replace a lying sensor. Has anybody replaced their sensor and had it fix the problem?

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post #8 of 10 Old 11-02-2005, 01:42 PM
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Quote:
Originally Posted by poorracerkid
I too have the same problem with my 92. I just ignore it but I am considering jumpering the plates just to make the light go out.
if you unplug the sensor the light should go out.

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post #9 of 10 Old 11-03-2005, 11:06 AM
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Mine did the same thing until I replaced it. No problems anymore; works great.

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post #10 of 10 Old 11-03-2005, 07:37 PM
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Just unplug it.

My '88 didn't come with the sensor. The harness just hangs unplugged. No light. if i jumper the harness the light comes on

EDIT: I just realized 87-89 and 90-93's might be wired differently. The 87-89's can unplug it because the sensor might close the loop when the coolant is low. On the 90-93 cars it may be closed at all times and the switch opens when coolant is low. Purely speculating though


Mike
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