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Re: A/C erratic problems Posted by Ari [Email] ![]() ![]() In Reply to: A/C erratic problems, SteveUKNJ, Mon, 21 Jun 2004 16:37:52 Members do not see ads below this line. - Help Keep This Site Online - Signup |
Background-
That wire, as Kevin alludes to, is a temperature sensor for the evaporator. It's job is to measure the evap coil temp to detect freeze-up. If it gets too cold, it'll turn off the compressor to allow it to warm up. Remove it, or break it (as Kevin says), and it won't work right.
If the compressor is kicking in, and STAYING kicked in, the system should cool down. If it doesn't, then you may have lost R134 pressure. Not totally, because the compressor wouldn't kick in.
The compressor should kick in, and stay engaged for 10 or 15 seconds at least. One line to the compressor should get warm, the other, cold. I should be engaged at least 50% of the time. If the compressor kicks in and then right back out, it could be low pressure, or a faulty low pressure switch. It could also be as simple as an oxide build-up on the AC relay, or its leads.
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