Checked all fuses and relays switch lights up seems like compressor not kicking in
The accumulator or dryer looks like a long cylinder, it has a pressure switch on it and two wires attached to it. pull the wired molex off, with the ac set on max cooling, jump out the two wires with a wire or paperclip, if the clutch on the ac compressor engages, check the cab to see if its cooling, if it does cool the switch needs to be replaced, if it does not cool, you may need freon, and there could be a sign of a leak in your system, that can be best checked with ac manifold guages. the low pressure switch is there for safety if the canistor or accumulator is low or has no freon the switch opens up and keeps the clutch from running so that the compressor will not burn up. good luck!
SOURCE: 1999 Chevy Tahoe AC compressor cycles on and off.
That would be the fan clutch on the compressor itself... if it wont take a charge with all setting on high and running then you'll need to get it replaced , have a specialist inspect it to make sure the innards of the compresor arent junk...I have same pronblem with my 97 z28.. but it will take a charge and last 3 months then i have to recharge...The clutch and innards of my compressor are going bad..So its a chevy known issue,,,best of luck...Ohh one more thing do you hear a hiss when you turn it off and on, the ac that is
SOURCE: No power for AC compressor
try removing the plug off the low pressure switch on the accumalator plug a paper clip into the plug and turn ac on if it comes on then your low pressure switch is bad or your low on refigerant.
SOURCE: 1995 z-28. air conditioner compressor won't kick
Your A/C pressure switch may have gone bad or the wire harness to it may have gone bad. The switch is along the low pressure line or on the A/C Accumulator ( looks like a silver canister) , Unplug the wire and you can jump it there and see if the clutch comes on, if it does try spreading the two tabs apart on the switch and clipping the wire back on. If it does not come back on you need to replace the switch, you can do it with out loosing to much R134A. Just got to be quick when you remove the old one and placing the new one. The low side should have a reading of 30PSI to 50PSI and the high side should have 150PSI to 200PSI. Any other reading will give you poor A/C performance. Good luck and hope this helps.
SOURCE: a/c trouble 2001 silverado
you havent check the pressior of the compressor make sure is full loaded
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