3MAX
1/2 ton status
I'm cleaning up the wiring on my 1990 K5. Where should the high pressure switch on the compressor wire into? The wire from the switch is broken and missing. I'd like to wire it back up correctly.
CK5
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R4 Compressor High Pressure Switch Wire
- Thread starter 3MAX
- Start date
3MAX
1/2 ton status
Bumping this back to the top. I've searched elswhere as well, and still no clear answer. It's possible that the compressor has been replaced with a salvaged unit and the original didn't have a high pressure switch. I've read that there were some years the R4's didn't have the provision for the switch. If that's the case on a '90 model, I can leave it unhooked, but would like to use it if the stock application calls for it.
thearborbarber
1/2 ton status
I have a 91 Sub and it only has the low pressure switch near the dryer.
3MAX
1/2 ton status
Do you have the R4 compressor?
thearborbarber
1/2 ton status
If you mean that summer time power sucking R4 compressor then yes I do. The only wires going to it power the the clutch.
4xcrazy
3/4 ton status
I honestly don't remember seeing a high pressure switch on mine, it's an '89 though. All I remember seeing are the wires going to the compressor, and the wire for the pressure switch on the accumulator, low side.
I'm not stating facts of it being there or not, just saying, I don't remember seeing a high pressure switch.
I seem to remember that being one of the biggest things as to why it's best to have a high and low pressure manifold gauge set on it, to read what both sides are doing, reading the low side to get it to where it's supposed to be, but if the high side gets too much going on, it's usually an o-tube issue or some sort of blockage deal.
Been a short time since I've messed with them though,,, could be something different I'm not remembering on this model.
I'm not stating facts of it being there or not, just saying, I don't remember seeing a high pressure switch.
I seem to remember that being one of the biggest things as to why it's best to have a high and low pressure manifold gauge set on it, to read what both sides are doing, reading the low side to get it to where it's supposed to be, but if the high side gets too much going on, it's usually an o-tube issue or some sort of blockage deal.
Been a short time since I've messed with them though,,, could be something different I'm not remembering on this model.
3MAX
1/2 ton status
Do you mind taking a look for me? Sounds like our models were not originally equipped with the high pressure switch. In that case, I'll just leave it unhooked.
