Adding 94-96 XJ A/C to 87-90 MJ - Slow Thread

[Gojira94]

It's going to take a while to gather everything I'll need to do this. I'm guessing it'll take 6-9 months to gather it all and be ready to do the install. I've chosen to do a hybrid setup, using Renix-era inside parts, aside from the evaporator itself. Under the hood, I'm opting for a 94-96 R134a native setup. I don't like the 97-01 setup that uses stamped metal clips to hold the lines together at the condenser, no thanks. And 87-90 to me looks cluttered and the hoses and parts are hard to come by from what I've seen in discussions here.

 

My engine control harness is from 1990 and it has the pins for A/C. My engine harness is from something else and does not have the diode module, A/C clutch relay, clutch feed or pressure switch connectors. I can make all that from parts cut from an 87-90 in the boneyard, or buy the whole harness at the boneyard for about $60 and recondition it.

 

I have the 91-98 compressor mounting bracket, my alternator is sitting on it right now. I'll have to move the alternator down to the original HO location and get a pair of HO alt mounting brackets and shave them for my Durango unit. And a new belt.

 

The remaining parts needed are as follows:

 

HVAC Housing - 87-96 boneyard rehab

Temperature Control Panel for A/C equipped car - 87-96 boneyard rehab

A/C Dash Harness - 87-90 boneyard rehab

A/C Thermostat Control Switch on HVAC box - 87-90 boneyard grab or new Crown 56002688 from Quadratec.com 

Evaporator - new 1994-96

Evaporator drain tube - 87-96 boneyard rehab

Expansion Valve - new 1994-96

Low Pressure Cutoff Switch on drier - new 1994-96

Receiver drier - new 1994-96

Compressor to condenser hose - new 1994-96

Low Side TxV to compressor hose - new 1994-96

Condenser to drier hose - new 1994-96

Drier to evaporator hose - unobtanium, acquire a used 1994-96 and have it re-made

Compressor - new 1994-96

Condenser - new 1994-96

Condenser to radiator mounting tabs - 87-96 boneyard rehab + new hardware for them

 

I'm going nuts right now because I have a source vehicle located for some of the big items. But there's no way I can get to it until the weekend of August 8th-9th 2026!