ID this plug?

[east302]

Not sure if it helps, but I used this one on my 98 K1500 with belly leaker compressor. I don’t know what the setpoint is, though.

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[PlayingWithTBI]

FWIU the blue switch is the same standard. Maybe OP just got a bad one? Not that that's EVER happened before!

 

[andy396]

Just to verify it’s the switch, put a continuity tester or ohm meter on the two pins of the switch. It should be a normally closed switch. If it’s closed when the system is off then it’s doing its job and you have a blockage somewhere causing high pressure. If it’s normally open then you either got a bad switch or the wrong one.

 

[Stumpy]

Thanks for the recommendations, but will be the weekend again before I can get back to it. I've forgotten already what color the switch is, but I know there are 3 or 4 different ones. I fortunately got the one that fit my plug.

I did some reading last night, and looks like another possible cause of it not running, is it's low on refrigerent, and needs a vaccum put on it. I don't have a way of doing that, so going to have to find somebody that can, and get it charged up.

 

[andy396]

Jumping the high pressure switch alone in the pump shouldn’t make it run. Which switch are you jumping to make it come on?

 

[Stumpy]

Jumping the high pressure switch alone in the pump shouldn’t make it run. Which switch are you jumping to make it come on?

Didn't jump the switch, I jumped the plug that goes to the switch.

 

[andy396]

Didn't jump the switch, I jumped the plug that goes to the switch.

That’s what I meant. Must be the wrong switch or a bad one then.