Search found 1350 matches

by JohnHere
Fri Jun 14, 2024 3:27 pm
Forum: Automotive Air Conditioning Forum
Topic: 2005 Avalon XLS AC air vent temps
Replies: 23
Views: 1736

Re: 2005 Avalon XLS AC air vent temps

Now all you have to do is fix it ;)

If you do it yourself, make sure that you weigh-in the exact charge using a purpose-built refrigerant scale. Just an ounce or two "off" in a car that holds only a little more than one-pound of refrigerant will affect the system's cooling performance.
by JohnHere
Fri Jun 14, 2024 3:14 pm
Forum: Automotive Air Conditioning Forum
Topic: AC on '14 Tacoma is not great
Replies: 3
Views: 31

Re: AC on '14 Tacoma is not great

Pressures are 50/260 @ 90 F ambient. This seems good Nah. With 50 PSI on the low side, the evaporator is going to be ~54°F, not nearly cold enough to make the cabin comfortable in the Phoenix heat. Start with the correct refrigerant charge, as suggested earlier, and check the fans to ensure they're...
by JohnHere
Fri Jun 14, 2024 3:03 pm
Forum: Automotive Air Conditioning Forum
Topic: 2011 Camry intermittent cooling
Replies: 4
Views: 263

Re: 2011 Camry intermittent cooling

Glad you got it sorted out and that it's cooling well again. Just in time, too. Probably was the control valve that was malfunctioning, but with that much mileage on your Camry, I think it was a good call replacing the entire compressor, plus the condenser and R/D, which are typically replaced to ma...
by JohnHere
Wed Jun 12, 2024 10:02 pm
Forum: Automotive Air Conditioning Forum
Topic: 1979 F 250 ac all new componets not cooling great
Replies: 5
Views: 66

Re: 1979 F 250 ac all new componets not cooling great

Some additional potential causes: ● Insufficient refrigerant flow through the TXV. ● Something blocking the TXV and refrigerant flow, such as beads from a ruptured desiccant bag. ● Non-condensable air in the system. ● Sealer in the system. ● Too much oil. ● Saturated R/D desiccant. Did you convert t...
by JohnHere
Wed Jun 12, 2024 5:30 pm
Forum: Automotive Air Conditioning Forum
Topic: 1979 F 250 ac all new componets not cooling great
Replies: 5
Views: 66

Re: 1979 F 250 ac all new componets not cooling great

The HS (condensing) pressures look good, but the LS pressures are low. The TXV bulb is usually located at about 3 o'clock or 9 o'clock, but I'm unsure whether clocking even matters. Is the bulb tightly attached to the tube, and is it well insulated from engine compartment heat? At those LS pressures...
by JohnHere
Wed Jun 12, 2024 2:50 pm
Forum: Automotive Air Conditioning Forum
Topic: Crazy AC Manifold Pressures
Replies: 7
Views: 208

Re: Crazy AC Manifold Pressures

I wasn't turning the handwheels just the dials on the ports that depress or retract the plungers. I wasn't clear whether you had the MGS handwheels fully closed and the service port adapter thumbwheels turned fully clockwise when taking your pressure readings. I'm still somewhat unsure about that. ...
by JohnHere
Wed Jun 12, 2024 7:45 am
Forum: Automotive Air Conditioning Forum
Topic: 1991 S10 Issues
Replies: 13
Views: 448

Re: 1991 S10 Issues

JohnHere wrote: ↑Thu Jun 06, 2024 1:49 pm If the low-side running PSI is approximately in the mid-20s to mid-30s, then the pressure switch on the accumulator should be "closed," or infinite ohms on a multimeter, which would cause the compressor to engage. If a correctly functioning pressu...
by JohnHere
Wed Jun 12, 2024 7:33 am
Forum: Automotive Air Conditioning Forum
Topic: 2005 Avalon XLS AC air vent temps
Replies: 23
Views: 1736

Re: 2005 Avalon XLS AC air vent temps

The AC system would have to recovered, replace the valve internally on the comp., then vacuumed & recharged? Yes. Does the ac comp have to be removed as well? Thanks! You can access the control valve on the outside of the compressor by removing the electrical connector, removing the snap ring, ...
by JohnHere
Tue Jun 11, 2024 6:54 am
Forum: Automotive Air Conditioning Forum
Topic: 2005 Avalon XLS AC air vent temps
Replies: 23
Views: 1736

Re: 2005 Avalon XLS AC air vent temps

I know the ac comp. is staying engaged when ac is turned on. And both elect. radiator cooling fans run with the ac turned on. Right...that's typical behavior for a variable-displacement compressor setup. Instead of cycling the compressor, the PCM varies the compressor's displacement via the control...
by JohnHere
Tue Jun 11, 2024 6:24 am
Forum: Automotive Air Conditioning Forum
Topic: Class A AC woes - bad expansion valve??
Replies: 24
Views: 555

Re: Class A AC woes - bad expansion valve??

Good idea. In fact, another member of this Forum has done exactly that on a pickup truck. I forget which topic it appeared in, but it was recent and secondary to the main discussion. On many GM vehicles, the inlet hose that sends hot water into the heater core measures 5/8" ID and runs from the...