"Most vehicles should turn on the radiator electric fan immediately with the A/C turned on"

BINGO

If you have failing diodes you can easily run the voltage way over 14.
Have it tested

That is some nasty crap on the OT. Long thread, don't recall if comp ever failed, if so condenser may not have been changed out, which is a must. As far as cooling, there will be others here that understand the wiring behind the condenser fan coming on. BUT FOR ME PERSONALLY I would never run the co...

Thank you

If no one wants to do this on the open forum a PM would work
Thanks

Question for the hotshots here.....you know who you are... Have a friend in S Florida (new smyrna beach area) We need a reference for a decent ac shop. He is a first class mechanic but knows enough to not jack with the ac. A couple shops have already looked at it but truly did not know what they wer...

Today, unfortunately, new has little meaning. We had a devil of a time determining why we had high pressures on a system. Bunch of new parts incl new condenser. Was actually a new install on a vintage car. Finally decided condenser was no good. Once it was out, we shook all kinds of shiny aluminum c...

Which brand pump? name brand or HF? Have you changed the oil in the pump? That can make a lot of difference. Let's start there; sounds like low charge, but if there are non-condensibles (air) in there that tends to raise the pressures. How much less or more 134 have you tried? If no recovery machine...

You probably mean R12, not R10.

"There are lots of charts out there that list in oz, without specifying weight or volume.
For example, they will say you need 48 oz of refrigerant and 10 oz of oil ..!"

oz is a measure of weight, at least in the USA

Long thread. Has re-heating such as faulty blend doors etc been discussed. Sorry if it has been addressed