Search found 1197 matches

by JohnHere
Tue Feb 07, 2023 11:17 pm
Forum: Automotive Air Conditioning Forum
Topic: POA Valve Doesn't "pop"
Replies: 2
Views: 351

Re: POA Valve Doesn't "pop"

Most accounts I have read for bench testing POA valves describe a "pop" that should be audible as the input pressure is slowly increased. Neither of these valves "pop", although there is a slight wobble in the gauge needle as the low side pressure reaches 30lbs. I'm running 60lb...
by JohnHere
Sat Feb 04, 2023 8:23 am
Forum: Automotive Air Conditioning Forum
Topic: Hyundai Excavator A/C Woes
Replies: 18
Views: 2641

Re: Hyundai Excavator A/C Woes

How much oil, which type, and what viscosity did you install, and where and how did you add it? I don't have the specs for this machine, either, but it seems to me that around 8 ounces in total (236.6 milliliters) would be about right.
by JohnHere
Fri Feb 03, 2023 10:12 am
Forum: Automotive Air Conditioning Forum
Topic: Hyundai Excavator A/C Woes
Replies: 18
Views: 2641

Re: Hyundai Excavator A/C Woes

This is a rather lengthy and detailed post. So to make for easier reading and diagnosing for those of us in the USA, I converted Grams, Kilopascals, and Celsius to Ounces (net weight), PSIG (gauge pressure), and Fahrenheit, highlighting all of the latter in this color . Good evening all, ... The Com...
by JohnHere
Mon Jan 30, 2023 1:49 pm
Forum: Automotive Air Conditioning Forum
Topic: 10mm switch port o-ring size?
Replies: 2
Views: 560

Re: 10mm switch port o-ring size?

Hard to say what the exact size is. I keep a "problem solver" assortment of o-rings on hand for such a purpose, and try a few until I find one that appears to have the right diameter and thickness. O-ring assortments are readily available, often packaged in a compartmented, clear plastic b...
by JohnHere
Fri Jan 13, 2023 2:29 pm
Forum: Automotive Air Conditioning Forum
Topic: 1995 Buick Lesabre
Replies: 63
Views: 12189

Re: 1995 Buick Lesabre

I wanted to leave some residual pressure in the system, in the hopes of not needing to vacuum it down. If I replace that Schrader valve that will empty the system. I’m guessing this will be the last fan switch this car ever sees, so thinking of just installing new switch and let it be. Good idea. I...
by JohnHere
Fri Jan 06, 2023 8:13 am
Forum: Automotive Air Conditioning Forum
Topic: 1995 Buick Lesabre
Replies: 63
Views: 12189

Re: 1995 Buick Lesabre

Ok. Went to pull the high side fan pressure switch. Unscrewed it about 4 turns and it started hissing. Waited a moment and it started hissing heavier and would not stop, so screwed it back down. Sealed up. Is there a Schrader valve under there? The mounting flange doesn’t look very deep. I would be...
by JohnHere
Mon Jan 02, 2023 5:01 pm
Forum: Automotive Air Conditioning Forum
Topic: 1986 Volvo how much R134a into an R12 system?
Replies: 2
Views: 786

Re: 1986 Volvo how much R134a into an R12 system?

Generally speaking, a conversion from R-12 to R-134a usually takes approximately 75 to 85-percent of the original R-12 charge, which according to the under-hood decal on this car is 46.4 ounces net weight. Start at 75-percent of the original charge, or about 35 ounces, and slowly work your way up, a...
by JohnHere
Fri Dec 30, 2022 10:57 am
Forum: Automotive Air Conditioning Forum
Topic: Another Ford Ranger AC Issue
Replies: 38
Views: 5477

Re: Another Ford Ranger AC Issue

Also where I currently reside, only Genuine Fan clutch assemblies are available (fan blade & clutch) & they'll set you back $1200. The viscous fan couplings have been available from time to time but they aren't too good quality wise. Oh, my :o A price of $1,200 would give me pause as well. ...
by JohnHere
Fri Dec 30, 2022 10:45 am
Forum: Automotive Air Conditioning Forum
Topic: 1995 Buick Lesabre
Replies: 63
Views: 12189

Re: 1995 Buick Lesabre

Had a cooling fan issue (fans on high all the time) and the scanner live data showed a AC PRESSURE - HIGH. (Key in, engine off, AC not run). After several days of having the fuse for the fans pulled I took the car to a mechanic with a GM TECH2 scanner. Put the fuse in and fans operated normally. Bu...
by JohnHere
Sat Dec 24, 2022 10:48 am
Forum: Automotive Air Conditioning Forum
Topic: Another Ford Ranger AC Issue
Replies: 38
Views: 5477

Re: Another Ford Ranger AC Issue

IMHO, car manufacturers sometimes get carried away with their testing procedures and expensive tools. Unless you're curious, I don't think I would spend the time and money diagnosing a component that frequently wears out, that can be replaced in half an hour or less in many instances, and that can b...