Search found 19 matches

by JohnHere
Sat May 19, 2018 9:08 pm
Forum: Automotive Air Conditioning Forum
Topic: 75psi on high and low side
Replies: 3
Views: 23

Re: 75psi on high and low side

If you have only about 12 ounces in it (one can), it is way too low. And as Cusser alluded to, the compressor won't engage.
by JohnHere
Sat May 19, 2018 9:03 pm
Forum: Automotive Air Conditioning Forum
Topic: 75psi on high and low side
Replies: 3
Views: 23

Re: 75psi on high and low side

I would approach this by first recovering the refrigerant that's in it now, pulling a good vacuum for at least 30 minutes, and weighing-in the factory-specified charge of 19.0 ounces of R134a. Then take LP and HP gauge readings at an engine speed of 1,800 RPM with the A/C system on and report the pr...
by JohnHere
Sat May 19, 2018 5:57 pm
Forum: Automotive Air Conditioning Forum
Topic: Fog and refrigerant blown out of vents during recharge
Replies: 7
Views: 65

Re: Fog and refrigerant blown out of vents during recharge

I have a few additional thoughts. If you saw frost on the evaporator box cover plate while charging, that would indicate to me that the evaporator has a large leak. So I agree with bohica2xo on that. Sometimes, debris like leaves will accumulate in the box and over time, cause corrosion and eventual...
by JohnHere
Sat May 19, 2018 11:23 am
Forum: Automotive Air Conditioning Forum
Topic: Replaced compressor, failed again 9 days later. Advice sought
Replies: 15
Views: 245

Re: Replaced compressor, failed again 9 days later. Advice sought

Right...at 1,500 RPM, the LP reading will be a little lower and the HP a little higher. But I think the HP would still be much too low.
Let us know how you make out.
by JohnHere
Sat May 19, 2018 10:33 am
Forum: Automotive Air Conditioning Forum
Topic: Fog and refrigerant blown out of vents during recharge
Replies: 7
Views: 65

Re: Fog and refrigerant blown out of vents during recharge

The oil is a concern, too, in that when exposed to the atmosphere for any length of time, it will absorb moisture and cause havoc in the system. Hopefully, you got out all the old oil when you flushed the components and then capped all the openings. Don't forget to add back the proper amount and typ...
by JohnHere
Sat May 19, 2018 10:16 am
Forum: Automotive Air Conditioning Forum
Topic: Stuck Compressor Clutch Plate: Suggestions on Removal
Replies: 19
Views: 319

Re: Stuck Compressor Clutch Plate: Suggestions on Removal

You're right. From the photo, it does appear pretty rough. If that's the case, replacing the entire clutch probably would be the way to go since I'm not sure whether the pulley is available separately. Tim would know.
by JohnHere
Sat May 19, 2018 9:14 am
Forum: Automotive Air Conditioning Forum
Topic: Replaced compressor, failed again 9 days later. Advice sought
Replies: 15
Views: 245

Re: Replaced compressor, failed again 9 days later. Advice sought

It took me a little while to make the conversions to US measures and interpret them, but here's what I think is going on. Given an ambient temp of 21C (70F) and a vent temp of 5C (41F), the LP gauge reading of 2.0BAR (29PSI) seems just about right. However, the HP gauge reading of 7.5BAR (109PSI) is...
by JohnHere
Thu May 17, 2018 7:29 am
Forum: Automotive Air Conditioning Forum
Topic: Stuck Compressor Clutch Plate: Suggestions on Removal
Replies: 19
Views: 319

Re: Stuck Compressor Clutch Plate: Suggestions on Removal

Glad to learn you finally got the darn thing off. And thanks for your detailed posts, to which I'll refer if I ever face the same problem.
by JohnHere
Wed May 16, 2018 7:14 pm
Forum: Automotive Air Conditioning Forum
Topic: Replaced compressor, failed again 9 days later. Advice sought
Replies: 15
Views: 245

Re: Replaced compressor, failed again 9 days later. Advice sought

I wouldn't worry about seepage at the Schrader valves as they're normally not bubble-tight anyway. It's the caps that do the actual sealing. Just ensure they're in good condition and snug them down well by hand. I like to put a little PAG oil on the internal o-rings, too. So the leak(s) must be else...

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