Search found 1674 matches

by JohnHere
Fri Jul 18, 2025 12:27 pm
Forum: Automotive Air Conditioning Forum
Topic: 2004 F-150 Heritage AC
Replies: 47
Views: 66273

Re: 2004 F-150 Heritage AC

Recently, I posted this for someone else:

Be sure to use the green HNBR o-rings of the correct size , coat them and the mating surfaces with Nylog Blue (a little goes a long way), reassemble, evacuate, recharge to specs, and I doubt whether you'll have any more leakage problems.

I recommend ...
by JohnHere
Thu Jul 17, 2025 9:34 am
Forum: Automotive Air Conditioning Forum
Topic: 2004 F-150 Heritage AC
Replies: 47
Views: 66273

Re: 2004 F-150 Heritage AC


John, you’ve got me confused here. The thinner high pressure liquid line on my truck runs from the condenser to the smaller line on the evaporator which is the inlet, correct?
Yes.


So, if I flushed the evaporator through the larger diameter evaporator line (this line comes from the R/D on my ...
by JohnHere
Thu Jul 17, 2025 9:12 am
Forum: Automotive Air Conditioning Forum
Topic: Series condesnors
Replies: 2
Views: 111

Re: Series condesnors

On the surface, one might think that your inquiries are fairly simple. Speaking as a non-MVAC engineer, I believe they're more complex.

As for your question about adding a second condenser, that scenario has been discussed on this Forum within the past couple of years. If I recall correctly, doing ...
by JohnHere
Tue Jul 15, 2025 6:18 pm
Forum: Automotive Air Conditioning Forum
Topic: Re: 1999 Toyota Camry
Replies: 1
Views: 186

Re: 1999 Toyota Camry

Wow! How did you charge it that you managed to blow the HPRV? Typically, the trinary switch in your Camry will shut-down the compressor before it reaches that critical high-pressure point.

The HPRV is a one-time valve, so you'll need to replace it.

The only place I'm aware of to purchase a new ...
by JohnHere
Tue Jul 15, 2025 12:26 pm
Forum: Automotive Air Conditioning Forum
Topic: 2004 F-150 Heritage AC
Replies: 47
Views: 66273

Re: 2004 F-150 Heritage AC

I agree with Tim. Adding dye to the TXV side or the suction side of the evaporator, I don't believe it makes any difference.
by JohnHere
Tue Jul 15, 2025 7:40 am
Forum: Automotive Air Conditioning Forum
Topic: 2004 F-150 Heritage AC
Replies: 47
Views: 66273

Re: 2004 F-150 Heritage AC

In addition to what Cusser said, I would add no more than three-quarters of an ounce of UV dye to the evaporator. Again, a little goes a long way. Special tools are also available to inject the dye into the low-side service port after the system is charged.

Add about one ounce of PAG oil, then add ...
by JohnHere
Mon Jul 14, 2025 11:58 am
Forum: Automotive Air Conditioning Forum
Topic: 97 Chevy c1500 a/c help needed…
Replies: 1
Views: 127

Re: 97 Chevy c1500 a/c help needed…

If you haven't already done so, pull out the Orifice Tube (OT) and examine it. It might be partially blocked with gunk and metal particles. If it is, I'm afraid the system will need a lot more work.

How many miles are on the clock?
by JohnHere
Mon Jul 14, 2025 10:20 am
Forum: Automotive Air Conditioning Forum
Topic: 2004 F-150 Heritage AC
Replies: 47
Views: 66273

Re: 2004 F-150 Heritage AC

That's good. No, it wouldn't circulate the solvent.
by JohnHere
Mon Jul 14, 2025 9:14 am
Forum: Automotive Air Conditioning Forum
Topic: High pressure side never drops, even when car is off
Replies: 3
Views: 1836

Re: High pressure side never drops, even when car is off


I evacuated the system before I recharged it, and the part I purchased claimed to have the R/D already in it. I did measure the refrigerant by weight.
Regarding the amount of PAG oil I put in, I don't recall the exact amount, but it was in the neighborhood of 1.25-1.5 ounces. I did get it from the ...
by JohnHere
Mon Jul 14, 2025 8:12 am
Forum: Automotive Air Conditioning Forum
Topic: Keihin CN150L 1984 Honda CRX
Replies: 1
Views: 111

Re: Keihin CN150L 1984 Honda CRX

I don't have a diagram for your compressor. But ACKits.com, this Forum's sponsor, can have your existing compressor rebuilt as long as the mainshaft still rotates smoothly.