A/C clutch won't engage

[StanHolder]

Just replaced ac compressor because the pulley bearing failed. Evacuated system. No leaks. Started charging the system. Got one can in but not showing any pressure on high side. Noticed compressor clutch engaging. Can't seem to find a fuse or relay to check. Also don't know where the ac pressure switch is. Thought they were usually on the accumulator. Thanks for any help
2006 Dodge. 2500
205,000 miles

 

[mwilson]

If your clutch failed it probably tripped the TIPM. You will have to get it reset.
Been there and done it….I went to dealer and had it reset.

 

[Ozymandias]

You definitely want to charge that system strictly by weight only, the pressures will lead you into a severely overcharged system.
The Gen3 is different then any other AC system I had before.

 

[AH64ID]

Since you opened the system to replace the compressor you will need to have it serviced with a machine, not a can. You need to have it pulled down with a vacuum and recharged.

 

[mwilson]

He mentioned that he evacuated the system which may mean he did pull a vacuum on it.
But as mentioned the 3rd Gen’s are fussy and it would be in his best interest to have the dealer vacuum and fill with the correct amount of R-134A. Couple ounces makes a big difference. He really needs to go there and get the TIPM reset anyways..