Search found 973 matches

by Cusser
Thu Feb 13, 2025 7:10 am
Forum: Automotive Air Conditioning Forum
Topic: Advice on how to flush after compressor failure?
Replies: 10
Views: 128528

Re: Advice on how to flush after compressor failure?

Flame Red wrote: Wed Feb 12, 2025 9:25 am I am well practiced now at replacing compressors and can do it record time
The goal is to do a job correctly, not in record time. You seem to be learning this.
by Cusser
Mon Feb 10, 2025 6:29 am
Forum: Automotive Air Conditioning Forum
Topic: adding dye for top-up?
Replies: 5
Views: 44276

Re: adding dye for top-up?

Yes, that is a good time to add dye, add how much UV dye the label states, then add refrigerant oil to make up to that 1.5 oz. Then rotate the compressor drive plate about 10 revolutions by hand/wrench once it's all bolted up connected.
by Cusser
Sat Feb 08, 2025 7:29 am
Forum: Automotive Air Conditioning Procedures, Tips and FAQ.
Topic: Mercedes ML55 (W163) A/C cuts off in hot weather
Replies: 3
Views: 221015

Re: Mercedes ML55 (W163) A/C cuts off in hot weather

When my 1998 Frontier experienced similar symptoms about 2019, I tested it and found that when it wasn't cooling, the compressor clutch was not engaged but was getting voltage. For me the fix was to remove an AC clutch shim. Took me 30 minutes, didn't even need to remove my AC belt; and AC works ...
by Cusser
Tue Dec 24, 2024 6:46 am
Forum: Automotive Air Conditioning Forum
Topic: Doubling Up Evap Core
Replies: 7
Views: 59963

Re: Doubling Up Evap Core

Cooling is achieved when the refrigerant changes from a liquid to gas form in the evaporator. Since the refrigerant is already in the gaseous phase in the evaporator, so a second evaporator in series would seem to be useless. At least that's how I understand things.
by Cusser
Mon Nov 25, 2024 7:13 am
Forum: Automotive Air Conditioning Forum
Topic: Air con noise - is it my clutch or compressor
Replies: 6
Views: 54542

Re: Air con noise - is it my clutch or compressor

I'm not an AC professional.

I don't like the noise.

If mine, I'd use chalk or paint, and make a line on the drive plate (center part) and on the pulley edge to try if I could determine that the AC clutch is slipping sometime.

When the AC clutch slipped on my Frontier, it didn't make noise, the ...
by Cusser
Sun Nov 03, 2024 6:45 am
Forum: Automotive Air Conditioning Forum
Topic: O rings. A cautionary tale
Replies: 1
Views: 25020

Re: O rings. A cautionary tale

Agree, one must use the special AC O-rings, typically green NBR.

Hardware store O-rings are for water, not refrigerant or automotive fluids.
by Cusser
Wed Oct 23, 2024 6:28 am
Forum: Automotive Air Conditioning Forum
Topic: My A/C Stop blowing cold air after 45 mph
Replies: 8
Views: 64742

Re: My A/C Stop blowing cold air after 45 mph


The first thing to check is whether you have the correct amount of refrigerant in the system, which would require recovering and weighing it. A professional shop having a Recover/Recycle/Recharge (RRR) machine will be able to tell you that, as long as you don't have any alternative refrigerants ...
by Cusser
Fri Oct 11, 2024 7:20 am
Forum: Automotive Air Conditioning Forum
Topic: Bad Compressor?
Replies: 13
Views: 71461

Re: Bad Compressor?


the stop leak....Well, I've vacuumed it about 3 times now so maybe it's mostly gone?

No, it's still in the system. But maybe you'll be lucky.

Likely your 2013 just lost a little R134a over time. The right thing to do first thing - would've been to have a shop evacuate the refrigerant and weigh ...
by Cusser
Thu Oct 10, 2024 3:52 pm
Forum: Automotive Air Conditioning Forum
Topic: Bad Compressor?
Replies: 13
Views: 71461

Re: Bad Compressor?

Zardiw wrote: Thu Oct 10, 2024 3:31 pm Also when this first stated I added a can of stop leak....fwiw
NOT GOOD !!!
by Cusser
Fri Sep 27, 2024 6:22 am
Forum: Automotive Air Conditioning Forum
Topic: Reusing R-134 in same vehicle
Replies: 9
Views: 49314

Re: Reusing R-134 in same vehicle


That recovery machine is supposed to pull out oil, i thought, and separate. It didn't pull any oil out of my 2002. Maybe I should add some oil?

As far as I know - and I'm not an AC professional - very little oil will be pulled out by the vacuum, either with a recovery machine or when pulling a ...