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  #1  
Old 03-03-2011, 06:23 PM
Rider99XX Rider99XX is offline
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Default AC Compressor cycles on/off too quick

I have a 94 Ranger w/2.3. I just replaced the timing belt and now the AC compressor cycles on and off every few seconds. I know they cycle repeatedly but this is too fast to cool. When it come on it tries to cool but the compressor doesn't stay on long enough.

I've NEVER had a seconds problem with the AC. It's worked perfectly since day one.

Thoughts?
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Old 03-03-2011, 06:25 PM
FireRanger FireRanger is offline
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Default Re: AC Compressor cycles on/off too quick

Either low pressure due to a leak or the pressure switch is toast.
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  #3  
Old 03-03-2011, 06:32 PM
schultzkenneth schultzkenneth is offline
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Default Re: AC Compressor cycles on/off too quick

I'd guess it's the pressure switch too. You can test it pretty easy. Just jumper it with a decent size paper clip,if it runs normal with the clip in there, then that is probably your problem.

If it is low pressure, due to a leak, then you'll notice your AC not getting cold once the compressor kicks on.
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Old 03-03-2011, 06:40 PM
ObsoleteE ObsoleteE is offline
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Default Re: AC Compressor cycles on/off too quick

these guys summed it up perfectly! No need for further input.
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Old 03-03-2011, 06:44 PM
Rider99XX Rider99XX is offline
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Default Re: AC Compressor cycles on/off too quick

Thanks guys. I thought about the pressure switch because it was working perfectly a day or two before I replaced the timing belt. I guess hearing it from someone else gives me some confidence LOL.

schultzkenneth...I like your avatar... #3 forever!
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  #6  
Old 08-04-2013, 10:39 AM
EdTharp EdTharp is offline
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Default Re: AC Compressor cycles on/off too quick

I know it has been some time, but I am also in the exact same boat, that the AC in my fordranger started c\ycling on and off rapidly right after replaceing a timeing belt.
did this turn out to be the low pressure switch? in my truck, the low pressure side seems to have plenty of pressure while the compressor clutch is pulled in, almost as if it had too much pressure and restricted flow.
I am wondering if it may be related to moving the hoses around,breaking loose stuff that gets caught in the filter and expansion tubes.
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Old 08-06-2013, 05:24 PM
Milton Milton is offline
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Take pressure readings.
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Old 08-06-2013, 05:26 PM
Vogenitz69 Vogenitz69 is offline
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How much is a compressor switch?
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Old 08-08-2013, 06:05 PM
1999dangerranger 1999dangerranger is offline
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Sounds like to me you have a leak somewhere cuz mine does that and I know where mine leaks but haven't had a chance to fix it

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Old 08-12-2013, 02:00 PM
KnightCadet01 KnightCadet01 is offline
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Default Re: AC Compressor cycles on/off too quick

I also have a similar issue. The Coolant is full, we've replaced the switch and I am still having these issues.

Most of the time, it works but living in the humid summers, I need this working 100%.

Leaving the back window open seems to have an effect of lasting much longer and when the AC stops blowing cold air and essentially working as if on Vent, I switch to vent for a few minutes and switch back and the AC works for another extended period of time, sometimes.

Don't have the money to get someone to look it over and it is driving me crazy.

Please help. (also dunno why sig won't show up: 2002 mazda b3000 v6)

Last edited by KnightCadet01; 08-12-2013 at 02:29 PM.
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  #11  
Old 08-12-2013, 02:11 PM
cvar cvar is offline
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Default Re: AC Compressor cycles on/off too quick

Ditto here. My AC compressor is switching too rapidly, every few seconds. I measured HI/LO sides with manifold gauges, and both are same (75 psi) pressure. I think this means my orifice tube is malfunctioning. But I might have multiple problems at once? Dunno about condition of my pressure switch, yet. Would a bad orifice tube cause fast cycling?
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