If they still have the A6 compressor, recalibrating the POA valve for 134a should help a lot. Older conversions sometimes have too much (or mixed) oil in the system because of the guidelines used 30 years ago. The other thing that can make a big difference on older cars is the fan clutch and shroud....

Nicely done.

In 1989 on a Bronco it would depend on the system. Many had dealer installed A/C, and it could have many different compressors and systems.

Engine size and compressor type is a place to start. Also look at the hose connections. Hose clamps are a dead giveaway for an aftermarket system

Switch for 134a is a Wells WVE 1S15787 Connector Pigtail is a STANDARD MOTOR PRODUCTS S610 Both fit a 1992 Ford F150 pickup. Your local auto parts store can cross reference those numbers to any brand they carry. If you search either of those parts online you will find the usual sellers you buy from.

Wow, have not seen one of those big Mopar switches in a while. I would replace it with the cycling switch from a 1988-1993 Ford F-150. Same mounting, with a valve depressor. You will need to buy the mating connector pigtail for the Ford switch. Both are easy to find. The good news is the ford switch...

Check with Detroit AC He is a member here, and this is the ONLY ebay link that is permissible. https://www.ebay.com/sch/i.html?item=333833141981&rt=nc&_trksid=p2047675.m3561.l2562&_ssn=detroitthermo I believe it is the Dodge Journey line caps you are looking for bur send him a question a...

Who is going to cover the warranty on the compressor?

That all depends on which compressor your truck came with.

!0SF17 and 10SF20 compressors use PAG 46

HU6 compressors use PAG 150

GM tech covered this in your previous thread:

https://autoacforum.com/viewtopic.php?t=14870

There is a 250 psi switch available for the high side port in the back of the A6 head

Interesting. Even a beater, non running Pantera project is a $40k car now. I don't think I would have risked a chinese knockoff compressor on a project like this. Anyway, the individual components of that system - the evaporator, lines and condenser can be flushed. The receiver dryer can NOT be flus...