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Re: Hey Ari, tell You what about... Posted by Ari [Email] ![]() ![]() In Reply to: Hey Ari, tell You what about..., Tiziano, Mon, 8 Mar 2004 07:38:35 Members do not see ads below this line. - Help Keep This Site Online - Signup |
I don't have a '95 AC schematic at hand, but I can make some assumptions.
The first thing to do is to unplug the AC compressor clutch, and see if the clutch releases. If the clutch is stuck, it won't release, no matter what the voltage is. That is a clutch problem, and your only solution is to replace the clutch.
If the clutch releases when the electrical connector is unplugged, then look at the relay. Typically pin 30 is 12 volts from a fuse. I can believe that it is 12 volts even with the ignition off. pin 87 is switched to pin 30 when the relay is energized. I would guess that pin 87 goes to the clutch. If there is zero volts on the 87, AND on the high side of the clutch, then the problem is a stuck clutch. If pin 87 has 12 volts no matter what, then look at pins 80 and 85. If pin 80 is 0 volts, then the relay should be de-energized and the clutch open. If pin 80 is 0 volts and pin 87 has 12 volts, then the relay is bad.
I wouldn't worry about freeze switches and fuses. If they are bad, the clutch will drop out, not stay engaged. I would make sure the clutch isn't stuck, then start tracing the electricals back.
Ari
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