A/C WOT relay faulty??? | Ford Explorer - Ford Ranger Forums - Serious Explorations
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A/C WOT relay faulty???

Mumblix

New Member
Joined
May 30, 2008
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City, State
Tacoma, WA
Year, Model & Trim Level
1992 Sport
Hi...here's the deal.

1992 Explorer Sport. A/C converted to R-134. When you start the truck and turn on the A/C, it works great. Nice cold air, A/C compressor clicks on and off as it should (no fast cycling). R-134 level is good.

If I get on the freeway or hit the RPM's high, the A/C compressor shuts off due to (I assume) the WOT relay doing it's job. Pretty soon, the air coming out of the vents is warm and humid. The Compressor has stopped coming back on.

No A/C until I stop and turn off the key. I start it and the A/C is back until I hit a high RPM level.

Ok...my question is...can a WOT relay stick in the cut-off position until the system is reset (un-powered) or am I completely off base?

Any help or opinions would be appreciated.

Thanks!
 



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MrShorty

Explorer Addict
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December 27, 2001
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City, State
Spanish Fork, UT
Year, Model & Trim Level
92 XLT and '87 Bronco II
Any relay can get stuck open. I would have to look at a wiring diagram to see exactly where I'd put a voltmeter to determine if this was the case. It shouldn't be difficult to determine if this is what is happening in your case.
 






1Byounkin

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February 8, 2010
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City, State
Gallatin, TN
Year, Model & Trim Level
'91 4x4 XLT
Did you ever figure out your problem with your WOT relay??? Mine is acting the same way.
 






arco777

Elite Explorer
Joined
April 6, 2008
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Year, Model & Trim Level
1994 Explorer 2dr 4x4
Relays in the fuse box are pretty easy to test, just swap them around. I believe they're all the same model of relay and you can confirm by the part numbers on them.
 






Nomad767

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August 1, 2010
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City, State
Lake Charles, La
Year, Model & Trim Level
92 Explorer XLT 4x4
I have seen the low pressure switches stick once they are activated to turn off the compressor. Could just be a sticky low pressure switch mounted on the dryer...maybe the faster drop in pressure when driving is causing it to stick. Just a thought.
 






1Byounkin

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City, State
Gallatin, TN
Year, Model & Trim Level
'91 4x4 XLT
All of the switches have been replaced. The relay is the only thing.
 






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