Air Conditioning issues on my 91 auto mk3

[SvtSupra]

Hi Guys,
Bought a 1991 Toyota supra turbo automatic about 3 months ago. Air condtioning was not working. So i took it a reputable shop that i've been using for about 3-4 years. They replaced
compressor
evap
expansion valve
air/dryer
converted to R134
the fan near the condensor comes on after about 30 minutes of driving, and the dual fans also come on.

My issue is i feel like the ac is not cold enough. Its barely enough to stop a sweat on a really hot day. The mechanics are at a loss, any suggestion on what else to check. They also thought the compressor was bad so they swapped it out again, and also the air/dryer was replaced again.

Also when they check the system it is full, after 7 days, therefore no apparent leaks..

I appreciate any help that can be offered.

Randy

 

[Nick M]

Surely they took a pressure reading. And the electric fans should turn on almost right away. Unless it is really cold out and you are moving at highway speed.

 

[SvtSupra]

So if i start it up and put the ac on, the fans should come on.. well they don't so it sounds like i have a relay issue..

 

[Dan_Gyoba]

On mine, the fans hardly ever came on, even when everything was bone stock (And the system still had R12 in it.) It was still a rare thing for the fans to come on after the R134 retrofit, the only time that I knew the fans to come on was in 40 deg C heat, stop and go traffic. (I pulled over to see what the noise was.) I later modified the system to turn the fans on more often.

Caveat: My car was NA at the time.

 

[Nick M]

The high pressure switch closes at 220. If you are in Canada, you might not hit it as much. As noticed with your stop and go in warmer temps.