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A/c clutch wont engage

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New User

Feb 19, 2018, 6:30 PM

Post #1 of 2 (977 views)
A/c clutch wont engage Sign In

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.

Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Feb 19, 2018, 7:58 PM

Post #2 of 2 (966 views)
Re: A/c clutch wont engage Sign In

I assume you mean 4.7 as they don't have a 4.6.
It already took enough for the compressor to engage. It has to have another issue. There are dozens of possible issues and that one uses the IPDM to operate the clutch so it's a little tricky to test. You will likely need someone local to diagnose it for you.


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