Problem with my 1999 Chevy S-10.
GM tech = mw
question = My A/C stopped working. I got the 134a refill with gauge and made sure it
was full. Still not working. I went to local auto parts store, they said to take the switch off
the (forgot the part name) the cylinder shaped aluminum looking thing that has tubes
going in it. (This is also where low pressure hookup is). They said to take that switch
off, put a jumper between the two make connectors and if the compressor stays on, I
need to replace that switch. I did what they said, put jumper on, compressor stayed on. I
put the new switch on and it did what it did before. Compressor comes on and 2 secs
later shuts off. You can hear a little clicking sound also coming from near where that
cylinder shape thing is.
MW:
Jumping the pressure cycling switch helped, but the new switch made no difference.
I would look very closely at the wires for that switch. The terminals may be spread apart
so they dont make good contact in switch, or the wires are broken right at the
connector.
Other possibility is that the pressure in the system in incorrect, so that switch disables
the system.
By using a jumper wire, you are defeating the purpose of the cycling switch, so it does
not know the pressures are wrong, therefore stays running.
Need to put gauges on the system, hook everything back up correctly, then see what
the pressure are.
GM tech = mw
question = My A/C stopped working. I got the 134a refill with gauge and made sure it
was full. Still not working. I went to local auto parts store, they said to take the switch off
the (forgot the part name) the cylinder shaped aluminum looking thing that has tubes
going in it. (This is also where low pressure hookup is). They said to take that switch
off, put a jumper between the two make connectors and if the compressor stays on, I
need to replace that switch. I did what they said, put jumper on, compressor stayed on. I
put the new switch on and it did what it did before. Compressor comes on and 2 secs
later shuts off. You can hear a little clicking sound also coming from near where that
cylinder shape thing is.
MW:
Jumping the pressure cycling switch helped, but the new switch made no difference.
I would look very closely at the wires for that switch. The terminals may be spread apart
so they dont make good contact in switch, or the wires are broken right at the
connector.
Other possibility is that the pressure in the system in incorrect, so that switch disables
the system.
By using a jumper wire, you are defeating the purpose of the cycling switch, so it does
not know the pressures are wrong, therefore stays running.
Need to put gauges on the system, hook everything back up correctly, then see what
the pressure are.
Chevy S-10 Freon A/C Not Working
