Quote:
Originally Posted by Doktor Bert
I've been running this thing like this for 88,000 miles. I have found that the fin surface temps never get as cold as the air temps, when checked with an infra-red...FWIW
|
FWIW..... an infrared thermometer has certain rules due to the physics of the situation... it would take a contact thermometer on the fins to determine accurately their temperature..... as you have experienced.
There is no way for the air at the vents to get colder than the fins on the evaporator....
Listen to Vstech ..... an AC professional.....
When someone has done all the normal update stuff to one of these old cars and is not getting the cooling they expect....
it is almost certain that the FINS on the evaporator are clogged..dog and human hair, pollen, etc over the years builds up.... and the fins on the condensor also need to be straight and clean... with a high performance fan running all the time the AC is on.... even more important if using R134a. Just due to its slightly less efficient molecular structure...