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Probably none of the above. Posted by Ari [Email] ![]() ![]() In Reply to: ac switches on and off every half second, dan brodkey, Tue, 25 Jun 2002 12:45:24 Members do not see ads below this line. - Help Keep This Site Online - Signup |
Probably none of the things you mention.
I'm pretty sure it's not the ACC comanding the AC on and off (sensor problem), but to be absolutely sure, just beep the temperature setting to LO. That should keep the AC on for a long period. The AC normally cycles on and off, but at much longer intervals. If setting it to LO doesn't fix the problem (and I'm betting it won't), then the problem isn't the sun or dash sensors.
It could be the relay, but it probably isn't. The AC shuts off if the refrigerant pressure is too low, too high, or a different sensor detects icing in the core. And a few other things. My guess is that the low refrigerant pressure sensor is telling the system that you have low pressure. This could be due to a bad sensor, or because you actually have low AC pressure.
I would bring the car to a shop that handles AC systems and have them check the system pressures. Since work was done in the area of the AC, you might have a leak and low pressure. A shop knows how to wire out the cut-out switches to check pressures.
There is a remote possiblity that you have a bad ground somewhere, that the relay may be bad, or that there's a wiring problem. But I'd have the system pressures checked out, and the operation of the cut-out switches.
Good luck!
posted by 140.157.4...
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