2000 Hurricane A/C Issue

[HarryStone]

I just read you post 11. If you have power to the low pressure switch, but nothing past it, it means either your low pressure switch is bad, or you have no freon in the system. You 'could' try to jumper the connections at the low pressure switch, and see if the compressor engages. Don't run it too long, if it's out of freon, you could damage components.

[HarryStone]

And, I mis-spoke about the relay, Apparently, it's a condenser fan relay, not the compressor relay. So, that's engaging, and your compressor is not. That is where the pressure switches and the thermostat come in to play.

[Rileyson]

just got back in from testing. I have power from the blue wire at the AC switch when i turn it to AC. I have power at the high pressure switch and the low pressure switch. Still the compressor didn't come on.

I then jumped both the high and low pressure switches, and still nothing. Then I took the AC relay out and I noticed this. When the car is running, ac switch on, pin 86 has 12v, 85 is ground, 87a is ground and 30 is only 2.5v. Should 30 be 12v as well?

[HarryStone]

30 is the input to the switch in the relay. 85 and 86 are the coil. 87 is the output of the relay and 87a is a dummy. If you ohm thru the relay from 30 to 87, with the vehicle on and the AC on, you should read a short. 0 ohms or very close. With power at 86, that should come from the AC panel, thru the high and low switches, so that works. 30 on the relay is a different circuit. That comes directly from a fused power source. You said you can hear the relay click when you turn the AC on, so that means all of the prerequisites are met to energize the compressor. You need to find out now why you only have 2.5 volts at 30. It should be 12, or the compressor won't engage.

[HarryStone]

Ignore my post 16, I was looking at a different schematic.

[Rileyson]

Originally Posted by HarryStone

30 is the input to the switch in the relay. 85 and 86 are the coil. 87 is the output of the relay and 87a is a dummy. If you ohm thru the relay from 30 to 87, with the vehicle on and the AC on, you should read a short. 0 ohms or very close. With power at 86, that should come from the AC panel, thru the high and low switches, so that works. 30 on the relay is a different circuit. That comes directly from a fused power source. You said you can hear the relay click when you turn the AC on, so that means all of the prerequisites are met to energize the compressor. You need to find out now why you only have 2.5 volts at 30. It should be 12, or the compressor won't engage.

Thank you soo much, you have been very helpful. I am going to have to find a wiring diagram to see where pin 30 is coming from.

If I jump from 86 to 87 will that send power directly to the compressor?

[HarryStone]

I would think so. The source for pin 30 should be AC fuse, from the Chassis. On mine, it's in the battery junction box in the engine compartment. It may look good, but you can test them with the meter to be sure.

[Rileyson]

Ugh I replaced that 20 amp fuse as well thinking the same thing but still 2.5v on 30. It just doesn't make any sense.

Originally Posted by HarryStone

I would think so. The source for pin 30 should be AC fuse, from the Chassis. On mine, it's in the battery junction box in the engine compartment. It may look good, but you can test them with the meter to be sure.

[Rileyson]

Also when I put a jumper from 86 to 30 she wouldn't start. It would crank but won't fire.

Originally Posted by HarryStone

I would think so. The source for pin 30 should be AC fuse, from the Chassis. On mine, it's in the battery junction box in the engine compartment. It may look good, but you can test them with the meter to be sure.

[HarryStone]

Originally Posted by Rileyson

Also when I put a jumper from 86 to 30 she wouldn't start. It would crank but won't fire.

What do you mean by that? Are you talking about the engine?

[HarryStone]

You may not be able to jumper, the compressor requires more current than the relay coil circuit can handle. Are you getting 12 volts at the fuse?

[Rileyson]

Originally Posted by HarryStone

What do you mean by that? Are you talking about the engine?

the engine would not start when i had the jumper in on the ac relay (pins 86 and 30).

[Rileyson]

Originally Posted by HarryStone

You may not be able to jumper, the compressor requires more current than the relay coil circuit can handle. Are you getting 12 volts at the fuse?

i am getting 12 volts at the 20 amp AC fuse.

[HarryStone]

If you are getting 12 volts at the fuse, but only 2 at the relay, it’s sounds like You have a bad connection somewhere