Fuse location on engine a/c compressor

dougrainer wrote:

hotjag1 wrote:
Thanks for the replies. I did have an a/c shop check freon level and they said it was good. Still hoping someone has a suggestion as to where the fuse might be that I may have overlooked.

HOW could they possibly check the 134a level(volume) with NO COMPRESSOR RUNNING?
IMPOSSIBLE. So, don't ever use that shop. Doug

Without knowing exactly what the "a/c shop" did, I tend to agree with Doug.

If they put gauges on it, they might be able to determine that there is SOME refrigerant still in the system, above atmospheric pressure, but without the compressor running, you can't really tell much.

I believe they could've measured the continuity of the low pressure switch and tried to make a determination from that as well. But again, without the compressor turning, I don't think that's reliable.

Now, they possibly could have jumped the low pressure switch, bypassing it, to see if the compressor came to life. (NOTE: Only do this momentarily as this could damage the compressor if allowed to run without proper oil circulating through the compressor.) If it did, THAT would indicate a likely possible low-refrigerant level. But if it didn't, that would most likely indicate the problem is elsewhere. If it did cause the compressor to work, then they probably would've offered to charge it for you.

Do you know exactly what the "a/c shop" did in their diagnosis? You can try jumping the low-pressure switch to see if that cause the compressor to kick in.

Good Luck,

~Rick