Can you help me?

[Dogon]

I have a 95 XLT and the A/C doesn't work at all. Compressor does not engage, and is not locked up. Using a test light, it looks like I'm not getting any power to the plug on the compressor. My Chilton manual says there is only 1 fuse (#18) related to the A/C system. My fuse is good. I was hoping there would be another fuse or relay that could be the problem but according to my manual there aren't any others.

Any suggestions/advice would be appreciated.

thanks!

 

[BrooklynBay]

Welcome to this forum! The low pressure cut off switch cuts the power to the compressor clutch when there is not enough freon in the system.

 

[manaen]

in addition to what BB said, if the system is at a very low PSI you will probably want to have it tested for leaks. However these systems will loose PSI over the years, you may just need some additional R-134A.

If it is a 0 PSI you have a problem and need to find the leak and completely flush the system. Check the condenser that is a main culprit many times stones or cinders fly up from the road and puncture the condenser so all your refrigerant leaks out.

 

[kanzaman]

I had a similar problem with a Honda Accord, and it turns out a pack rat had check it out for a possible residence, and while looking it over, chewed the power wire to the AC compressor in two! Whodathunkit?

 

[Gadget X]

I would get a can of refrigerant at the auto parts store. Start the engine, and set the A/C to max cool. Then start putting the refrigerant in the system. If low refrigerant was the issue, then the compressor should engage when you get like half a can or so of the refrigerant in.

 

[TheJackal]

I would get a can of refrigerant at the auto parts store. Start the engine, and set the A/C to max cool. Then start putting the refrigerant in the system. If low refrigerant was the issue, then the compressor should engage when you get like half a can or so of the refrigerant in.

I'd suggest checking the pressure first. You don't want to overcharge the system, with a proper set of guages you can look and see what kind of static pressure the system is holding and if it is enough. If the pressure is right, then it's most likely the switch.

 

[BrooklynBay]

You could jump the pressure switch with a wire to test the compressor clutch. It should engage when you jump it. Only do this for a few seconds. You shouldn't keep it this way. The cut off switch is there as a safety measure to prevent the compressor from running on low freon.