A/C clutch wont engage

Friendly format provided to inquire about automotive a/c systems.
Archived Forum

Moderators: bohica2xo, Tim, Dougflas, HECAT

Posts: 1
Joined: Mon Feb 19, 2018 6:36 pm

A/C clutch wont engage

Postby rickbrown1 » Mon Feb 19, 2018 6:42 pm

I recently put a new 4.6v8 in my 2004 Dodge Ram 1500 now the A/C doesn't work. I assume I've got a leak and I don't want to jump the low freon switch to get the clutch to engage due to compressor damage. I hooked up my gauges and turned the air and fan on with the key on, and it only took a little bit of the refrigerant. With both gauges hooked up, it read 95 on the low side and 100 on the high side. Any idea how I can get it to take some of the freon without jumping the switch? Thanks.
Posts: 2
Joined: Sun Mar 11, 2018 5:42 pm

Re: A/C clutch wont engage

Postby MAX HEADWORK » Sun Mar 11, 2018 6:30 pm

With those pressures you should not have to jump the low pressure switch. Start the truck put the fan on high, charge through the lowside. If your clutch isn't engaging, I suspect a faulty low pressure switch, the wiring in your system or faulty logic commands from the in dash control unit.

I'm new here today is my first day. But since no one answered your question I'll give it a go.

Return to “Automotive Air Conditioning Forum”