A/C issues. "Tight" compressor. Belt slipping. (Page 2/4)
theogre SEP 03, 07:26 AM
If you "put too much oil" and hydrolock the compressor would lock it not cause "Tight" compressor.

Likely the compressor is bad.
Or maybe you pulled the belt too tight cause cord layer failure. Many people think the belt need pulled like string for banjo etc. and quickly fail.

------------------
Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)

The Ogre's Fiero Cave

Cliff Pennock SEP 03, 08:14 AM

quote
Originally posted by sdgdf:

This bot has shown up on multiple threads, it looks like its trying to inject malicious code:

<span id="SHOWHIDDEN84984" class="HTMLBodyLink" style="cursor ointer;" onclick="document.getElementById('HIDDEN84984').style.display='';document.getElementById('SHOWHIDDEN84984').style.display='none'"><!-- HIDE_CAPTIONSTART -->Click to see AI response<!-- HIDE_CAPTIONEND --></span>

Cliff needs to delete its posts.



No, it's not injecting malicious quotes. It just puts its response inside a [ hide ][ /hide ] tag. The reason you don't see a URL if you hover over it is because it's not a link.
Cliff Pennock SEP 03, 08:15 AM

quote
Originally posted by sdgdf:

Looks like ChatGPT showed up to the thread to help you



That's my mistake. It was working properly but I made a small change and made an small error causing the software to display the question instead of the answer.
RWDPLZ SEP 03, 11:47 AM

quote
Originally posted by jelly2m8:


Shouldn't a good long vacuum evacuate the majority of the oil? say 20 mins under 30 or more inches of vacuum . I do respect your knowledge, just asking an honest inquiry.



It actually doesn't, that's why you can add the oil to the accumulator and compressor before sealing the system up and drawing vacuum.

Here's a demo (HVAC but same principle as MVAC)
Raydar SEP 03, 04:44 PM

quote
Originally posted by RWDPLZ:
This assumes the system had the proper amount to begin with (and wasn't R-12 525 viscosity mineral oil). The fact you pressed the schrader valve and it sprayed 2oz of oil everywhere would seem to suggest there's a LOT of oil in there.



I didn't just press the schrader. I figured I could unscrew it a few threads and create a slow leak. Wrong-O!
Instead, it blew the core into the next county, and a green blast came out of the receiver-drier, where the valve core had previously lived. So there was a nice coating of oil and dye all over the right side of the front compartment, and the underside of the hood, and the jack attachment bracket, and...

And Ogre... I know that I *could* have hydrolocked the compressor, if it was trying to compress just oil. I just figured that maybe there was just enough oil to reduce the volume enough to not hydrolock the compressor, but to make the gas/oil mixture a lot harder to compress.
That was actually the gist of my question.

Once again, thanks everyone.

Once I get my blue car ready for RFTH, this is next on the list.
sdgdf SEP 03, 04:54 PM

quote
Originally posted by Raydar:


I didn't just press the schrader. I figured I could unscrew it a few threads and create a slow leak. Wrong-O!
Instead, it blew the core into the next county, and a green blast came out of the receiver-drier, where the valve core had previously lived. So there was a nice coating of oil and dye all over the right side of the front compartment, and the underside of the hood, and the jack attachment bracket, and...

And Ogre... I know that I *could* have hydrolocked the compressor, if it was trying to compress just oil. I just figured that maybe there was just enough oil to reduce the volume enough to not hydrolock the compressor, but to make the gas/oil mixture a lot harder to compress.
That was actually the gist of my question.

Once again, thanks everyone.

Once I get my blue car ready for RFTH, this is next on the list.



What I research online, its called slugging if the compressor has too much oil. Nothing definitive about whether it can cause the belt to squeal. More likely its to do with the pulley or clutch? If you blew out that much oil 2oz isn't really a lot to add back in. If you change the accumulator its 4oz in a new one.

Someone I know, if they want to let the refridge escape slowly, they just loosen 1 of the nuts on the accumulator . They were in a rush on the weekend to get the a/c working and shops weren't open to capture.

[This message has been edited by sdgdf (edited 09-03-2023).]

Raydar SEP 03, 05:25 PM

quote
Originally posted by sdgdf:


What I research online, its called slugging if the compressor has too much oil. Nothing definitive about whether it can cause the belt to squeal. More likely its to do with the pulley or clutch?
...



The pulley spins fine, when it's not engaged. The clutch also seems to be doing it's job. I'm pretty sure it's not slipping. It's the belt that's slipping.
About the only time I drove the car before the "geyser" was on the way home, and maybe to town a time or two. Then I tore it all down.

Strangely enough, the seller told me that the A/C needed to be charged occasionally. I have never seen that. A year later, it's still so cold it will run you out of the car.
PFF AI Bot SEP 03, 07:30 PM
Click to see AI response
Cliff Pennock SEP 03, 07:32 PM
I just had the PFF AI Bot regenerate its answer since the original answer it gave was just a repeat of the question (which was a bug in my program).
Raydar SEP 03, 10:46 PM
Looks good, Cliff! Thank you!