97 blazer a/c v6 Vortec

I Jump the pressure switch. Start the truck and put the fan on high and ac switch on max cold. Compressor will not run. I bump the clutch on the compressor with a flash light and it engages and starts to cool (touch cold on the accumulator). I then turn off the ac in the cab. The compressor stops, as expected. I wait about a minute and turn the ac controls on again and the same thing happens. Compressor will not run unless I bump the clucth assembly on the compressor. Whats going on?

Thanks

GT

Heres one for ya. I Jump the pressure switch. Start the truck and put the fan on high and ac switch on max cold. Compressor is will runn. I bump the clutch on the compressor with a flash light and it engages and starts to cool (touch cold on the accumulator). I turn off the ac in the cab. The compressor stops, as expected. I wait about a minute and turn the ac controls on again and the same thing happens. Compressor will not run unless I bump the clucth assembly on the compressor. Whats going on?

Thanks

GT

Check the air gap on the clutch.
Not sure what the specs are but around .015-.025" with out rubbing anyplace would get it.
If it is good look for a lose connection or bad coil in compresser clutch.

I Jump the pressure switch. Start the truck and put the fan on high and ac switch on max cold. Compressor will not run. I bump the clutch on the compressor with a flash light and it engages and starts to cool (touch cold on the accumulator). I then turn off the ac in the cab. The compressor stops, as expected. I wait about a minute and turn the ac controls on again and the same thing happens. Compressor will not run unless I bump the clucth assembly on the compressor. Whats going on?

Thanks

GT



Any help, please.?.

Any help, please.?.

Check the air gap on the clutch.
Not sure what the specs are but around .015-.025" with out rubbing anyplace would get it.
If it is good look for a lose connection or bad coil in compresser clutch.
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Sounds like a buggy low pressure switch.