Search found 1635 matches

by JohnHere
Sun Jun 29, 2025 10:50 am
Forum: Automotive Air Conditioning Forum
Topic: Poor cooling Excessive high side pressures 09 ES350 Lexus
Replies: 1
Views: 132

Re: Poor cooling Excessive high side pressures 09 ES350 Lexus

The low-side pressures aren't too bad, but the high side is far too high, pointing to a condensing problem.

I would attack this problem from two fronts:
1. Replace the fan, check that nothing is obstructing airflow through the condenser, and that all foam seals and shrouds are in place. (The water ...
by JohnHere
Sun Jun 29, 2025 10:27 am
Forum: Automotive Air Conditioning Forum
Topic: High side line blowing off
Replies: 3
Views: 269

Re: High side line blowing off

Springlock Connectors aren't reliable IMHO, but they ARE cheap, appealing to corporate "bean counters." Instead of replacing the lines again, a clamp as described in the previous post helps solve the problem of the connector suddenly coming apart under pressure.

I'd also consider replacing the ...
by JohnHere
Fri Jun 27, 2025 12:39 am
Forum: Automotive Air Conditioning Forum
Topic: 2004 F-150 Heritage AC
Replies: 19
Views: 5669

Re: 2004 F-150 Heritage AC

I was afraid that you might not be able to remove the compressor with the studs in the way.

The oil is a question mark. If you can't get it all in the compressor, you'll have to "oil-balance" the system--that is, ~1.5 ounces in the evaporator, ~1.5 ounces in the condenser, ~1.5 ounces in the R/D or ...
by JohnHere
Thu Jun 26, 2025 4:15 am
Forum: Automotive Air Conditioning Forum
Topic: High hi side pressure 400psi
Replies: 4
Views: 628

Re: High hi side pressure 400psi

If, say, the ambient temperature is 65°F, then the low side and high side should read about 30/160 PSI respectively.
by JohnHere
Thu Jun 26, 2025 12:03 am
Forum: Automotive Air Conditioning Forum
Topic: 2004 F-150 Heritage AC
Replies: 19
Views: 5669

Re: 2004 F-150 Heritage AC

An induction heater sounds like a good idea, or an acetylene torch if it's safe to use.

Alternatively, can you get a die grinder in there to grind-off the bolt heads and then use a set of locking pliers to remove the studs after the compressor is out?
by JohnHere
Tue Jun 24, 2025 5:42 am
Forum: Automotive Air Conditioning Forum
Topic: Blows cold but gauges read equal
Replies: 2
Views: 347

Re: Blows cold but gauges read equal

Confused about a few things in your post. That said, is 125 PSI the static pressure (engine off, compressor disengaged) that you're reading on the low and high sides?
by JohnHere
Mon Jun 23, 2025 9:16 am
Forum: Automotive Air Conditioning Forum
Topic: High hi side pressure 400psi
Replies: 4
Views: 628

Re: High hi side pressure 400psi

Have the refrigerant recovered, and then remove the liquid line at the TXV. If you find desiccant beads, then the R/D has disintegrated.
by JohnHere
Mon Jun 23, 2025 5:51 am
Forum: Automotive Air Conditioning Forum
Topic: Sourcing R12 240sx compressor
Replies: 5
Views: 746

Re: Sourcing R12 240sx compressor

Did you call Tim at ACKits.com to discuss? He might be able to help you.

Why not convert the system to R-134a rather than keeping it R-12, which is extremely expensive and hard to find?
by JohnHere
Sun Jun 22, 2025 7:45 am
Forum: Automotive Air Conditioning Forum
Topic: STRANGE ISSUE NEED HELP!
Replies: 6
Views: 1141

Re: STRANGE ISSUE NEED HELP!

First thing I'd do, as already suggested, is to recover the charge and see what it weighs. If it's low, the system probably has a leak somewhere.

The high pressure seems a bit low to me, further suggesting a low charge.

I'd look up the specs for you, but I'm traveling outside the USA right now and ...
by JohnHere
Mon Jun 16, 2025 3:44 pm
Forum: Automotive Air Conditioning Forum
Topic: 2008 Tundra strange (to me) issue
Replies: 4
Views: 1491

Re: 2008 Tundra strange (to me) issue

If you're charging by pressures instead of by weight, you've most likely overcharged the system, causing the safety valve to vent refrigerant.