Changing just the clutch in an AC compressor good idea..?? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Chevrolet When starting new posts, please specify YEAR, MAKE, MODEL, ENGINE type, and whatever modifications you have made.

Reply
 
 
 
Thread Tools Search this Thread
Old 06-22-2015, 02:40 PM   #1
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Apr 2015
Posts: 71
Thanked 3 Times in 3 Posts
Skyward is on a distinguished road
Default Changing just the clutch in an AC compressor good idea..??

Been having issues with my AC compressor not kicking it, blowing fuses, etc..Every time the compressor engages, it blows the fuse and cuts off. refrigerant levels are not low. No shop wants to touch just the clutch and want to replace the whole compressor. Can't afford to pay $500-900 for a compressor replacement. The compressor isn't locked up and can be spun by hand. Luckily, I found a clutch on Amazon for $40 and was wondering what you guys think.



06 Impala 3.9L LTZ
Skyward is offline   Reply With Quote
Old 06-22-2015, 04:40 PM   #2
Senior Member
True Car Nut
 
Soft Ride's Avatar
 
Join Date: Jan 2012
Location: BC Canada
Posts: 3,590
Thanked 340 Times in 302 Posts
Soft Ride has much to be proud ofSoft Ride has much to be proud ofSoft Ride has much to be proud ofSoft Ride has much to be proud ofSoft Ride has much to be proud ofSoft Ride has much to be proud ofSoft Ride has much to be proud ofSoft Ride has much to be proud of
Default

Replacing the AC clutch sound like a good idea, however..
The high & low side refrigerant pressure must be within specifications for the compressor to kick in properly. What are the readings on the high & low side?
The clutch coil & associated wiring/connector (as it'* blowing fuses) could be a problem along with a rusted clutch.
I cleaned mine up with emery cloth and used silicone spray to free it up.
Do you get grinding sounds when it does engage, or any metal shavings below clutch seen?
You can also check the gap of the clutch and set it correctly if it is too tight etc..
https://www.gmforum.com/mechanical-1...-plate-278951/
Hope this helps.
Soft Ride is offline   Reply With Quote
Old 06-22-2015, 05:48 PM   #3
Senior Administrator








Certified Car Nut
 
Mike's Avatar
 
Join Date: Jul 2003
Location: Horseheads, NY
Posts: 15,649
Thanked 1,001 Times in 777 Posts
Mike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond repute
Default

If you are good with a DVM and it can measure AMP'*, make your own connector and supply 12v straight to the clutch with the engine running and measure the amps. If the power draw is less than the fuse rating, you have an issue with the harness somewhere.
Mike is offline   Reply With Quote
Old 08-11-2015, 04:41 PM   #4
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Apr 2015
Posts: 71
Thanked 3 Times in 3 Posts
Skyward is on a distinguished road
Default

UPDATE: Bought a compressor clutch from amazon. Took old clutch out, put new one in, tighten it to the consistency and AC blows nice and cold! Whole job took no more than an hour. IF anyone has 06-13 impala with ac compressor issue where it'* blowing fuses, I'd recommend first changing the clutch ($40) vs. AC compressor ($200-$400)
Skyward is offline   Reply With Quote
The Following User Says Thank You to Skyward For This Useful Post:
Soft Ride (08-12-2015)
Old 08-12-2015, 12:32 AM   #5
Senior Member
Posts like a Supercharger
 
Join Date: Jul 2015
Location: Chico, California (USA)
Posts: 158
Thanked 20 Times in 18 Posts
1.8TTony will become famous soon enough1.8TTony will become famous soon enough
Default

What did the old clutch coil look like? Was it damaged? I had this same problem many years ago. It drove me crazy. I tested switches, I tested wires, I tested connections.....on and on.....for DAYS and Days I couldn't pin point the problem. So much frustration. Where I made my mistake was when I tested the clutch coil for continuity. Continuity was good. So I figured it (the coil) was good. I should have tested it for resistance. For whatever reason, the clutch coil developed an unacceptable amount of resistance, the wire heated up, deformed the clutch encasement and.....yeah, started popping fuses.

Live and learn.

Glad you got your a/c back.

Anybody here ever do thier own a/c repairs for friends, family or to make a few extra bucks on the weekends......well.....

Those little cans or R134a are kinda expensive. Fifty bucks for 20 ounces......and 20 ounces wont fill a whole system. However, a person can buy a 30 pound tank of R134a for $200 from Autozone. No license required. I do it.....I made my own recovery tank from an old LPG propane tank because venting the old R134a out into the atmosphere isn't cool.
1.8TTony is offline   Reply With Quote
Old 08-12-2015, 02:20 PM   #6
Senior Member

Certified GM nut
 
Tech II's Avatar
 
Join Date: Feb 2014
Location: Worcester, Ma.
Posts: 2,150
Thanked 785 Times in 614 Posts
Tech II has a reputation beyond reputeTech II has a reputation beyond reputeTech II has a reputation beyond reputeTech II has a reputation beyond reputeTech II has a reputation beyond reputeTech II has a reputation beyond reputeTech II has a reputation beyond reputeTech II has a reputation beyond reputeTech II has a reputation beyond reputeTech II has a reputation beyond reputeTech II has a reputation beyond repute
Default

And how in the world do you get all of the freon into that propane tank?

And then what do you do with it?
Tech II is offline   Reply With Quote
Old 08-12-2015, 06:14 PM   #7
Member
Posts like a V-Tak
Thread Starter
 
Join Date: Apr 2015
Posts: 71
Thanked 3 Times in 3 Posts
Skyward is on a distinguished road
Default

Quote:
Originally Posted by 1.8TTony View Post
What did the old clutch coil look like? Was it damaged? I had this same problem many years ago. It drove me crazy. I tested switches, I tested wires, I tested connections.....on and on.....for DAYS and Days I couldn't pin point the problem. So much frustration. Where I made my mistake was when I tested the clutch coil for continuity. Continuity was good. So I figured it (the coil) was good. I should have tested it for resistance. For whatever reason, the clutch coil developed an unacceptable amount of resistance, the wire heated up, deformed the clutch encasement and.....yeah, started popping fuses.

Live and learn.

Glad you got your a/c back.

Anybody here ever do thier own a/c repairs for friends, family or to make a few extra bucks on the weekends......well.....

Those little cans or R134a are kinda expensive. Fifty bucks for 20 ounces......and 20 ounces wont fill a whole system. However, a person can buy a 30 pound tank of R134a for $200 from Autozone. No license required. I do it.....I made my own recovery tank from an old LPG propane tank because venting the old R134a out into the atmosphere isn't cool.
It looked normal. Other than just being a little dirty. The clutch was drawing too much power which was causing the fuses to blow. I first checked freon levels, tested the amps being drawn, checked the wires to make sure they were exposed etc..If you can spin the AC compressor by hand and it'* not locked up, it'* fine. I was getting quotes for $600-800 to replace the whole unit! I did it myself and didn't have to empty the system, refill, measure etc..Very easy to get to the clutch. Take off the tire, the splash guard, untighten the timing belt, unscrew the AC compressor and lower down, get a special wrench (about $15 at autozone) to open get the clutch off. Before taking it off, I took some flat pieces of aluminum and put them between the clutch and compressor so I knew how much it needed to be tighten. Took the clutch off, put the new one (came with gaskets) and did everything in reverse. It'* been two months in 104 degree here in Texas and hasn't failed me yet. Total cost was $65 including clutch, and wrench.
Skyward is offline   Reply With Quote
Old 08-14-2015, 01:40 AM   #8
Senior Member
Posts like a Supercharger
 
Join Date: Jul 2015
Location: Chico, California (USA)
Posts: 158
Thanked 20 Times in 18 Posts
1.8TTony will become famous soon enough1.8TTony will become famous soon enough
Default

Quote:
Originally Posted by Tech II View Post
And how in the world do you get all of the freon into that propane tank?

And then what do you do with it?
I have an old Robinair upright pump that I bought from shop that was going out of business. It has filter/separates the oil, it can evacuate and hold vacuum.....the only feature that doesn't operate on the unit is the pressure testing and recharging side (which is kinda the $$$ maker side of the thing, but I got it dirt cheap.....the guages work properly.

For the propane tank to receive the chemical, basically what I have is the propane tank with it'* original propane valve>>>>to a 3ft length of propane hose. At the end of the hose I attached the orifice valve from a regular R134a tank. I recycle it at a warehouse where they deal with all kinds of chemicals including different refrigerants from all kinds of things from vehicles, to industrial freezers, to residential a/c units......they collect/recycle other hazard wastes as well. Oils, liquid and aerosol paints, electronic waste, old tires, Farm/Ranch pesticides..

Last edited by 1.8TTony; 08-14-2015 at 01:42 AM.
1.8TTony is offline   Reply With Quote
Old 08-14-2015, 11:59 AM   #9
Senior Member

Certified GM nut
 
Tech II's Avatar
 
Join Date: Feb 2014
Location: Worcester, Ma.
Posts: 2,150
Thanked 785 Times in 614 Posts
Tech II has a reputation beyond reputeTech II has a reputation beyond reputeTech II has a reputation beyond reputeTech II has a reputation beyond reputeTech II has a reputation beyond reputeTech II has a reputation beyond reputeTech II has a reputation beyond reputeTech II has a reputation beyond reputeTech II has a reputation beyond reputeTech II has a reputation beyond reputeTech II has a reputation beyond repute
Default

Glad to hear you have a way of recovering and disposing the refrigerant......we generally know what usually happens....
Tech II is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Cooler Thermostat...Good idea? / Bad Idea? Kersh Bonneville GXP/ Northstar Powered Cars 5 01-26-2010 11:52 AM
Let's play: Good Idea, Bad Idea MOS95B Lounge 18 05-30-2006 02:03 PM
L67 EGR Blockoff? good idea? bad idea? Marik_bathory Performance, Brainstorming & Tuning 21 04-29-2006 12:50 AM
air compressor? sounds like a good idea how does it work? ZCRX87 1992-1999 7 07-26-2005 12:07 AM
AC compressor clutch not engaging theJMFC 1987-1991 10 07-28-2003 01:38 AM


Tags
ac compressor

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 09:37 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.