Looking for parts for your Jeep Wrangler TJ? Checkout the selection of TJ parts Amazon has to offer, many with 2-day Prime shipping!
Click the image below to browse TJ parts on Amazon.
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
Unless you're doing that in an air-conditioned garage, that high side looks pretty low to me. Even ignoring the FSM which seems to have very high targets for high pressure, standard R134a pressure charts want to see in in the range of 225-250 (if it was only 85 out when you did this) to 275-300 (if it was 95 out), and over 300psi if it was over 100 degrees.
I agree. High side looks low according to book numbers. Yes it’s an air conditioned garage but ambient temp about 80-85 at that time.
I don't like the TJ FSM's pressure chart because apparently whoever wrote that chart thinks Jeeps can violate the laws of physics - R134a is R134a and the high-side pressures the FSM wants to see are way above any other reference I've ever seen. I suppose they're covering a 10 degree step instead of five, but it still trends high. Every other FSM I've seen is in line with this chart:
View attachment 338127
With that said if you're at 85 degrees ambient then I'd follow the flowchart on the next page of the FSM starting with "normal pressures but temperatures too high". Oil overfill seems unlikely unless you've used one of those combination cans with oil and R134a in it, so I'd double check the blend door control and possibly the door itself to make sure it's not mixing heated air.
After you verify that then I'd plan on getting the system evacuated, and open it up to see what's in there.
Unknown..... Would need yo hook up the gauges and do some tests. Just wandering, did you replace the receiver/ dryer when replacing compressor?