I am going to install an air conditioner in my TJ before next summer. I haven’t found a thread on here but knowing this place there is one. Has anyone installed a new one or have any tricks or good idea on parts? Thanks in advance.
I have a set of gauges and my old man installed and serviced HVAC for a living in houses so he can help with the rest. I appreciate the thorough run down. I have a Jeep specialized salvage yard here in Memphis I’ll be checking out.I put A/C in my project cause the wife would never ride in it if there was none. When going to the Sierras in the summer and the San Joaquin/Sacramento valley is 115/43 degrees out, the air is fowl with smoke, ag and livestock smells, the A/C makes it possible to travel in more comfort.
I purchased a used A/C unit from a salvage yard that was removed from the salvage vehicle. It included the following parts you'll need:
A/C compressor & mount hardware
A/C engine bracket & mount hardware
Condenser & lines with high pressure switch
receiver/dryer & bracket for it with the low pressure switch
HVAC under dash unit with both heater core & evaporator installed in it
HVAC control unit for dash and relative cables
HVAC fuse and relay in PDC
Install was straight forward:
R & R old under dash plenum unit and the controls for it in the dash
Plug in the new controller and any lines
Install the relay and fuse in the PDC (depending on year, may already be there)
install the evaperator core in front of the radiator
install the A/C adapter bracket, A/C pump and use attachment hardware
Find A/C clutch wire in harness and break it out to connect the A/C magnetic clutch up
Install all high & low pressure lines with switches.
The wiring is already coming out the firewall for the low pressure/accumulator or receiver/dryer low pressure switch
Attach the plug that came with the high and low pressure switches to your Jeeps under hood harness
Evacuate for 30-45 minutes under 30 in. Hg. to remove all air and atmospheric moisture that has found it's way into the system when opened
Recharge pag oil and R134 refrigerant while engine is running checking the temp and pressures on your manifold gauge set
Confirm all is operational and disconnect/replace dust caps on port fittings.
The used A/C system pulled from a working running A/C wreck in the junkyard cost me $450 for everything plus $69 for the R134 which there is enough to do two or three more services in the can.
If you don't have a manifold gauge set or vacuum pump for A/C work, some shops will evacuate and recharge your system for a fee. If you have no leaks and changed any "O" rings that might be suspect, you shouldn't have any leaks. Price for this service varies, I own my vacuum pump and manifold gauge set so this service wasn't needed.
i wish. I am going to be selling my jeep in the next few weeks, unfortunately. Its my daily driver and I'm about to have a kid so i need to get something safer and something that the car seat can't just be stolen from.Are you still looking to install a new AC?
Well, I how important it is in summer.