Making A/C work
Making A/C work
When I bought the car, there was no AC belt and the previous owner didn't know if it worked. I got a belt and replaced the idler bearings, but still no AC.
There is gas and the pressure switch is closed, but there is no voltage at the pressure switch. I wired the compressor clutch positive straight to the battery and it engaged and blew very cold air.
Any ideas on what I should try next?
There is gas and the pressure switch is closed, but there is no voltage at the pressure switch. I wired the compressor clutch positive straight to the battery and it engaged and blew very cold air.
Any ideas on what I should try next?
- Proton mouse
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- Silverbullet
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- Location: Adelaide
If there is nothing at the pressure switch then it could be a few things; According to my factory A/C wiring diagram the current flowing through the pressure switch(es) flows in this order:
.85R fusible link > 20A fuse for blower > blower relay (N.O) > A/C switch (in cabin) > low pressure switch > high pressure switch > coil of the 6 pin relay (on shock tower) > thermostat (bolted to outside of evap box in cabin, temperature probe pinned to the evap core) and finally to earth through the 4 position fan switch (this circuit will not operate unless the fan switch is on)
So just check everything in that order. If the blower fan still runs then my money is on the 20A fuse which should be in its own holder on a wire near the fuse box as others have said.
.85R fusible link > 20A fuse for blower > blower relay (N.O) > A/C switch (in cabin) > low pressure switch > high pressure switch > coil of the 6 pin relay (on shock tower) > thermostat (bolted to outside of evap box in cabin, temperature probe pinned to the evap core) and finally to earth through the 4 position fan switch (this circuit will not operate unless the fan switch is on)
So just check everything in that order. If the blower fan still runs then my money is on the 20A fuse which should be in its own holder on a wire near the fuse box as others have said.
Will it ever end!?
-EA81 TWIN CARB!!!!
-L series 5 speed
-Custom paint job
-2" lift
-Full custom re-wire
-L series front end
-EA81 TWIN CARB!!!!
-L series 5 speed
-Custom paint job
-2" lift
-Full custom re-wire
-L series front end