Automotive Forums .com - the leading automotive community online! Automotive Forums .com - the leading automotive community online!
Automotive Forums .com - the leading automotive community online! 
-
Latest | 0 Rplys
Go Back   Automotive Forums .com Car Chat > Honda > Civic | CRX > '92-'95 Civic | EL | Civic Hybrid | Civic GX NGV
Reply Show Printable Version Show Printable Version | Email this Page Email this Page | Subscription Subscribe to this Thread
 
Thread Tools
Old 12-13-2010, 09:27 PM   #1
jnuckols
AF Newbie
 
Join Date: Apr 2005
Location: Melbourne, Florida
Posts: 21
Thanks: 1
Thanked 1 Time in 1 Post
A/C Compressor Clutch Resistance

I have a 1995 Civic DX and the compressor clutch will not engage. I followed the circuit all the way to the thermal protector on the compressor and unplugged the wire from the thermal protector to the clutch coil. If I jumper 12 volts directly to the clutch coil it still will not engage. I do get a spark, though, when I touch my jumper to the connector. Does anyone know what the resistance of the compressor clutch coil should be, or any ideas why the clutch won't engage even with 12 volts straight to it?

Thanks.
jnuckols is offline   Reply With Quote
Old 02-07-2011, 10:16 AM   #2
amy@af
Traffic Directing Admin
 
amy@af's Avatar
 
Join Date: Apr 2002
Location: Civic Land, Oregon
Posts: 7,893
Thanks: 226
Thanked 119 Times in 95 Posts
Send a message via Skype™ to amy@af
Re: A/C Compressor Clutch Resistance

try to turn by hand, the clutch on the compresor. If doesn't move it's seized.

The clutch is on the end of the pulley. It should move but not spin. Start the car & visually inspect

Last edited by amy@af; 02-07-2011 at 10:53 AM.
amy@af is offline   Reply With Quote
Old 03-16-2011, 09:26 AM   #3
jnuckols
AF Newbie
Thread starter
 
Join Date: Apr 2005
Location: Melbourne, Florida
Posts: 21
Thanks: 1
Thanked 1 Time in 1 Post
Re: A/C Compressor Clutch Resistance

Thanks. Compressor not seized. Just the clutch would not engage. I replaced the clutch only and solved the problem. Well, now there's another problem -- after an hour or so on the highway, the A/C stops cooling. A check shows that the refrigerant level is low, but there are no detectable leaks. It's seems like the system might be dumping refrigerant suddenly. Maybe an overpressure?

Quote:
Originally Posted by LadyNRedSi View Post
try to turn by hand, the clutch on the compresor. If doesn't move it's seized.

The clutch is on the end of the pulley. It should move but not spin. Start the car & visually inspect
jnuckols is offline   Reply With Quote
Old 03-17-2011, 08:41 PM   #4
BullShifter
AF Moderator
 
BullShifter's Avatar
 
Join Date: Jul 2002
Location: Homeless, Illinois
Posts: 6,216
Thanks: 1
Thanked 14 Times in 13 Posts
Re: A/C Compressor Clutch Resistance

Was it it filled with the correct amount? The only way to to is to evac & recharge using the correct weight. The best way to find a leak is with dye added to the system. Then a black light is used to trace.
BullShifter is offline   Reply With Quote
Old 03-29-2011, 01:42 PM   #5
jnuckols
AF Newbie
Thread starter
 
Join Date: Apr 2005
Location: Melbourne, Florida
Posts: 21
Thanks: 1
Thanked 1 Time in 1 Post
Re: A/C Compressor Clutch Resistance

No, did not evacuate. System still had some refrigerant in it, and I added more. When I was doing this for a living many years ago, we didn't fill by weight. We filled by pressure specs. I had about 30 psi on the low and 225 on the high. Does that sound like reasonable pressures?
jnuckols is offline   Reply With Quote
Old 03-29-2011, 09:51 PM   #6
BullShifter
AF Moderator
 
BullShifter's Avatar
 
Join Date: Jul 2002
Location: Homeless, Illinois
Posts: 6,216
Thanks: 1
Thanked 14 Times in 13 Posts
Re: A/C Compressor Clutch Resistance

The pressures sound ok but that system hold such a small amount. If it were me I would evac/recharge. Every A/C machine I have ever used went off weight. All cars have a sticker stating the capacity in weight not pressure because the pressures change with air temps. It's only way to know you are exact. Couple ounces over could easily over-charge.
BullShifter is offline   Reply With Quote
The Following User Says Thank You to BullShifter For This Useful Post:
jnuckols (05-30-2011)
Old 05-30-2011, 12:24 PM   #7
jnuckols
AF Newbie
Thread starter
 
Join Date: Apr 2005
Location: Melbourne, Florida
Posts: 21
Thanks: 1
Thanked 1 Time in 1 Post
Re: A/C Compressor Clutch Resistance

Sorry for the delay. The car goes off to college, and I only get to work on it when it comes back home. The main problem turned out to be the A/C controls in the dashboard. The compressor was turning off. Got another control from junkyard and it works now. I'll take your advice about evacuating and properly charging. I think the A/C should be colder, and that might just be because there's too much refrigerant. Thanks. Oh, and I was mistaken about the system being low on refrigerant -- someone else had checked for leaks and I misunderstood him to say that it was low.
jnuckols is offline   Reply With Quote
 
Similar Threads
Thread Thread Starter Forum Replies Last Post
Compressor clutch removal kharrell M Bodies 1 04-04-2004 07:37 PM
Compressor Clutch Removal kharrell General Discussion 0 03-20-2004 08:46 AM
96LX: decrease in clutch resistance + clutch fluid loss = mstr clutch/slv cylinder? iwtbh2 Accord/TSX/Accord Hybrid 1 01-16-2004 11:35 PM
A/C Compressor Clutch 46er2b Cherokee 0 11-22-2003 11:05 AM
Compressor clutch removal AllenW Blazer 0 09-01-2003 11:27 AM

Reply

POST REPLY TO THIS THREAD


Tags
a/c , clutch , compressor
Go Back   Automotive Forums .com Car Chat > Honda > Civic | CRX > '92-'95 Civic | EL | Civic Hybrid | Civic GX NGV

Thread Tools

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



All times are GMT -5. The time now is 01:27 AM.

Community Participation Guidelines | How to use your User Control Panel

Powered by: vBulletin | Copyright Jelsoft Enterprises Ltd.
 
 
no new posts