Search found 6 matches

by jcamp2112
Mon Sep 07, 2020 7:39 pm
Forum: Automotive Air Conditioning Forum
Topic: 1979 F150 will not cool below 60F register temps/evap partially warm
Replies: 11
Views: 2224

Re: 1979 F150 will not cool below 60F register temps/evap partially warm*FIXED*

So today on suggestion from many, I replaced the evap and recharged. Still had the same issue, 60f outlet temps no matter the charge level. Decided to change one more time the expansion valve, vacuum and recharge. This time, I got outlet temps of 42F which is perfect. Guess the TXV I had wasn't the ...
by jcamp2112
Tue Aug 18, 2020 7:45 am
Forum: Automotive Air Conditioning Forum
Topic: 1979 F150 will not cool below 60F register temps/evap partially warm
Replies: 11
Views: 2224

Re: 1979 F150 will not cool below 60F register temps

Also, I have two expansion valves now. The one that came with the kit has a hole in the inlet that I would say is .350" across, where as the new one might have n .080 hole. Does the inlet hole size make a difference really, or does the piston in the txv do all of the heavy lifting? Kinda confu...
by jcamp2112
Mon Aug 17, 2020 9:05 pm
Forum: Automotive Air Conditioning Forum
Topic: 1979 F150 will not cool below 60F register temps/evap partially warm
Replies: 11
Views: 2224

Re: 1979 F150 will not cool below 60F register temps/evap partially warm

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 ...
by jcamp2112
Mon Aug 17, 2020 5:02 pm
Forum: Automotive Air Conditioning Forum
Topic: 1979 F150 will not cool below 60F register temps/evap partially warm
Replies: 11
Views: 2224

Re: 1979 F150 will not cool below 60F register temps

Just for giggles, clamp off the heater core to ensure you're not reheating. You may have a partially plugged evaporator. Yeah, it's 100% closed off. No extra heat being added. I will triple check one more time to be sure though. I'm also going to flush the evap tonight... Sucks though, these are al...
by jcamp2112
Mon Aug 17, 2020 3:38 pm
Forum: Automotive Air Conditioning Forum
Topic: 1979 F150 will not cool below 60F register temps/evap partially warm
Replies: 11
Views: 2224

Re: 1979 F150 will not cool below 60F register temps

Using a HF vacuum pump. Its kinda old, I'm gonna try a new unit tonight. The 3cfm dual stage pump. In regards to the charge, i've tried everything really. Started with 12 oz, then 24, oz, then 36, then 48. The spec is for 2.75 lbs, so 4 cans is what the original R12 charge is. I tried 4 cans, and th...
by jcamp2112
Mon Aug 17, 2020 10:40 am
Forum: Automotive Air Conditioning Forum
Topic: 1979 F150 will not cool below 60F register temps/evap partially warm
Replies: 11
Views: 2224

1979 F150 will not cool below 60F register temps/evap partially warm

I've been working on this for 5 days now, i've reached the end of my AC troubleshooting knowledge. I need some real help now. 79 F150 460, just installed a whole new AC system, lines, york compressor, new evap, condenser, TXV, vacuumed it down overnight, and charged to spec. Calls for 2.75lbs of R12...