Search found 3 matches

by dasinc
Wed May 15, 2024 2:25 pm
Forum: Automotive Air Conditioning Forum
Topic: Peterbilt AC potential evap problem
Replies: 7
Views: 1331

Re: Peterbilt AC potential evap problem

I'm not super familiar with the truck but I if it's an expansion valve system I assume there would be a thermostat to read evaporator temperature. When replacing the evap did the temp probe get installed properly. If not the evaporator could be freezing up. Reading high side pressure is important. I...
by dasinc
Wed May 15, 2024 9:18 am
Forum: Automotive Air Conditioning Forum
Topic: Should I Top Off My 16 Year Old System?
Replies: 4
Views: 923

Re: Should I Top Off My 16 Year Old System?

If the system is cooling well most people wouldn't give it a thought. It never hurts to check pressures because even though it may be cooling it may be running irregular pressures. If it's running high-high side pressure it could suggest that the area between the condenser and radiator needs to be c...
by dasinc
Mon Mar 07, 2022 3:05 pm
Forum: Automotive Air Conditioning Forum
Topic: Car ac not cooling when weather is hot.
Replies: 27
Views: 19071

Re: Car ac not cooling when weather is hot.

It's hard to diagnose a A/C system without knowing the Low and High side pressures. See if you can get those. Also you stated that the condenser feels colder to the touch. The condenser should never feel cold, it is usually pretty warm or hot. If it's cold it could suggest a restriction. Again, the ...