35 chey s10 ac compressor getting no fire ran hot wire compressor works clucth engaes ac fuse okay ac relays okay there is no pressure switch on ac line fan works good need help
Re: 35 chey s10 ac compressor getting no fire ran hot...
The pressure switch on the low-side line breaks the circuit to the compressor if there is a problem with refrigerant pressure. You may have a refrigerant pressure problem or just a bad pressure switch.
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A/C compressor clutch relay , the PCM/ECM isn't energizing it ? Do you know what a wiring diagram is ? How to test electrical circuit's with a volt meter ? Free wiring diagrams here http://www.bbbind.com/free-tsb Enter vehicle info. year , make , model an engine . Under system click on HVAC ,then under subsystem click HVAC controls . Click the search button then the second blue link. Compressor clutch relay circuit .
You have to insert a can of R134A refrigerant and hose on the low pressure port.
Normally it is the fatter of the two hoses coming from the compre3ssor.It should then kick in with the A/C switch engaged.
If not you may have a bad fuse,switch,compressor,or relay.
Do you have A/C gauges to check your Freon? If charge is insufficient. low pressure switch will prevent compressor from engaging. If charge is suffient replace low pressure switch.
the AC compressor has a "shutdown switch" when not enough refrigerant is in the system run a wire from the
run a wire from the + battery cable to the compressor pulley switch with the engine running, ac on if the compressor clucth engages (turns) you have low refrigerant charge
ADD Freon. It's a R134 system and the pressure is too low. Trust me add Freon and it will work fine. With a low amount of Freon if you jump the low pressure switch at the accumulator it will be very cold but will not have enough pressure to kick on the low pressure switch.
hello, check all fuses, and relays, make sure wires to ac is not broke or has been pinched, sometimes you can run hot wire from battery, to compressor, touch hot side of plug in on comp wire see if it will kick on, if so sounds like a short, if compressor dont kick on with hot wire run to it, tap the out side of comp clutch and see if it kicks on, these compressors will not kick on any way if they are low on freon, once freon is full it should work.
you don't have enough pressure in your system. odds are you have a leak someplace and the factory installed a saftey switch to keep the ac from running when there is no pressure. This way you don't end up burning up your 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.
Try checking the spacing of the clutch of the compressor to your A/C...chances are the gap is too large and will not pull down to engage the compressor. That should eliminate the jump wire and keep your car snowing. No clutch to engage the compressor, no A/C.
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