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04-08-2009, 12:12 PM
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#1 |
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BAD BOW-Silverado XST
Join Date: May 2000
Location: Senior Member from Austin, TX
Posts: 6,431
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A/C clutch
The compressor on my 96 Jimmy failed. It locked up completely. We removed it to replace it. We did an entire A/C kit. We started everthing, but the new clutcht will not engage. The relay was replaced. Even the pressure switch was bypassed.
We're lost at what is causing the problem. Anyone have an idea? |
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04-08-2009, 09:04 PM
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#2 |
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Senior Member
Join Date: Jul 2006
Location: Blountville, Tn.
Posts: 3,904
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Re: A/C clutch
Make sure your getting current to the plug that goes to the clutch. So you jumped the pressure switch? Make sure you didn't pop a fuse. Thats my guess without looking at it.
__________________
*We could learn a lot from crayons... Some are sharp; some are pretty;and some are dull. Some have weird names; and all are different colours;but they all have to live in the same box. * You may be only one person in the world, But you may also be the world to one person. * Some mistakes are too much fun to only make once. Two rules in life. 1. Never sweat the small stuff! 2. Everything is small stuff! |
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04-08-2009, 11:18 PM
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#3 |
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Trucks N Tranzams
Join Date: Dec 2002
Location: North Las Vegas, Nevada
Posts: 816
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Re: A/C clutch
It is what happened to my wifes car after the compressor locked up and I changed all of the required parts.
I know its not an S10, but they are similar in design.
__________________
 Don'68 Chevy LB 383 TH400/GV/373 posi '56 Chevy 4WD SWB '64 Chevy short stepside '79 Trans Am 455/TH2004R/12blt/4whldisc 95 Kia (Wifes car) 2002 S-10 extended cab pickup "God punishes small sins immediately" |
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04-08-2009, 11:19 PM
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#4 |
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BAD BOW-Silverado XST
Join Date: May 2000
Location: Senior Member from Austin, TX
Posts: 6,431
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Re: A/C clutch
Power goes to the clutch. The clutch does not ground to engage. All the fuses are good too. Replacing the relay didn't help either. The fan works with the interior switch. I wonder if there is a seperate electrical control from the switch to engage the clutch.
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04-09-2009, 12:38 PM
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#5 | |
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Senior Member
Join Date: Jul 2006
Location: Blountville, Tn.
Posts: 3,904
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Re: A/C clutch
Quote:
__________________
*We could learn a lot from crayons... Some are sharp; some are pretty;and some are dull. Some have weird names; and all are different colours;but they all have to live in the same box. * You may be only one person in the world, But you may also be the world to one person. * Some mistakes are too much fun to only make once. Two rules in life. 1. Never sweat the small stuff! 2. Everything is small stuff! Last edited by BarryB; 04-09-2009 at 12:41 PM. |
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04-09-2009, 12:52 PM
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#6 |
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Senior Member
Join Date: Jul 2006
Location: Blountville, Tn.
Posts: 3,904
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Re: A/C clutch
Wait a minute you say it doesn't have to ground in order to work? That doesn't make since. You have 2 wires going to the clutch, correct? One is a ground and the other is the switched power. So the magnetic coil will not work unless its grounded. Thats how all the ones I ever worked on worked.
__________________
*We could learn a lot from crayons... Some are sharp; some are pretty;and some are dull. Some have weird names; and all are different colours;but they all have to live in the same box. * You may be only one person in the world, But you may also be the world to one person. * Some mistakes are too much fun to only make once. Two rules in life. 1. Never sweat the small stuff! 2. Everything is small stuff! |
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04-09-2009, 02:27 PM
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#7 |
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BAD BOW-Silverado XST
Join Date: May 2000
Location: Senior Member from Austin, TX
Posts: 6,431
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Re: A/C clutch
I stated the clutch engagement incorrectly. The clutch will engage if you put 12 volts and ground it. I've traced everthing down to two things. First VCM!! Ouch! The second is the control switch. SOB I have buy the entire three control assembly, fan speed, temperature and vent/A/C switch. It will be here tomorrow. If the new switches don't work, I probably have a VCM problem!
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04-09-2009, 04:36 PM
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#8 |
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Resistance is Futile
Join Date: Dec 2006
Location: Mesa,Arizona
Posts: 3,520
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Re: A/C clutch
I replaced 2 of these systems without problems. The system in the Blazer quit after a year and it was one of the switches....pressure I believe. Good luck gettin it going.
__________________
64 CHEVY PICK-UP > http://67-72chevytrucks.com/vboard/s...otrash+re-hash 64 CARRYALL >http://67-72chevytrucks.com/vboard/s...=1964+suburban 66 LB >http://67-72chevytrucks.com/vboard/s...d.php?t=427852 STRENGTH/DETERMINATION/MERCILESS/FOREVER .......posted via stationary device |
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04-09-2009, 05:35 PM
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#9 |
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Senior Member
Join Date: Jul 2006
Location: Blountville, Tn.
Posts: 3,904
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Re: A/C clutch
Hopfully you'll get it figured out without to much more hassel.
__________________
*We could learn a lot from crayons... Some are sharp; some are pretty;and some are dull. Some have weird names; and all are different colours;but they all have to live in the same box. * You may be only one person in the world, But you may also be the world to one person. * Some mistakes are too much fun to only make once. Two rules in life. 1. Never sweat the small stuff! 2. Everything is small stuff! |
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04-11-2009, 10:18 AM
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#10 |
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BAD BOW-Silverado XST
Join Date: May 2000
Location: Senior Member from Austin, TX
Posts: 6,431
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Re: A/C clutch
Well, the Jimmy is handing me my @$$! I have not found the problem. I know it's electical. I have one more option to partially rule out the VCM. After that, I'll have to take it in. It should be easy for them to find the problem with all the trouble shooting I've done. I've taken it in only once before for another electrical problem. I gave them a list of things I check, the guy found the problem in 15 minutes after he started looking at it.
 Oh, well it still neesd to get charged. I'll have to wait until Wed. |
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04-11-2009, 11:15 AM
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#11 |
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Resistance is Futile
Join Date: Dec 2006
Location: Mesa,Arizona
Posts: 3,520
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Re: A/C clutch
Did you bypass the pressure switch to test the compressor? They wont run without a charge to protect the compressor. I just noticed you said it had to be charged........disregard all comments if you're past all this stuff
 .
__________________
64 CHEVY PICK-UP > http://67-72chevytrucks.com/vboard/s...otrash+re-hash 64 CARRYALL >http://67-72chevytrucks.com/vboard/s...=1964+suburban 66 LB >http://67-72chevytrucks.com/vboard/s...d.php?t=427852 STRENGTH/DETERMINATION/MERCILESS/FOREVER .......posted via stationary device |
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04-11-2009, 12:28 PM
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#12 |
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Senior Member
Join Date: Jul 2006
Location: Blountville, Tn.
Posts: 3,904
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Re: A/C clutch
Yeap he saidhe by passed the pressure switch. I was working on one not to long ago. I had thought I had by passed the switch, still wouldn't turn on. I found out the jumper wires wasn't making a good enough connection. took a small pair of needle nosed pliers sqeezed down on the connectors to tighten them up. Problem fixed. May not be your problem but was worth telling you about it.
__________________
*We could learn a lot from crayons... Some are sharp; some are pretty;and some are dull. Some have weird names; and all are different colours;but they all have to live in the same box. * You may be only one person in the world, But you may also be the world to one person. * Some mistakes are too much fun to only make once. Two rules in life. 1. Never sweat the small stuff! 2. Everything is small stuff! |
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04-11-2009, 01:47 PM
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#13 |
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Resistance is Futile
Join Date: Dec 2006
Location: Mesa,Arizona
Posts: 3,520
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Re: A/C clutch
I'd already forgotten the first part
........I would have driven down to a shop by now!!!
__________________
64 CHEVY PICK-UP > http://67-72chevytrucks.com/vboard/s...otrash+re-hash 64 CARRYALL >http://67-72chevytrucks.com/vboard/s...=1964+suburban 66 LB >http://67-72chevytrucks.com/vboard/s...d.php?t=427852 STRENGTH/DETERMINATION/MERCILESS/FOREVER .......posted via stationary device |
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04-12-2009, 11:25 AM
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#14 |
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BAD BOW-Silverado XST
Join Date: May 2000
Location: Senior Member from Austin, TX
Posts: 6,431
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Re: A/C clutch
The new compressor has 1 lb of R134. It's enough to kick it on. It needs another 2 lbs. The problem is power. There's no power at the pressure switch or compressor. I can charge up the system if I power the clutch.
I'm making plans to take it to the only shop I can trust to work on it. It's on the other side of town though. |
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