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Author Topic: A/C compressor clutch  (Read 1528 times)

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RobG

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A/C compressor clutch
« on: 03 June 2010, 19:56:29 »

How do you check whether the clutch is engaging on the AC compressor and is there a relay anywhere that controls it. TIA
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Andy B

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Re: A/C compressor clutch
« Reply #1 on: 03 June 2010, 20:07:32 »

Quote
How do you check whether the clutch is engaging on the AC compressor and is there a relay anywhere that controls it. TIA
The original compressor has three 'pegs' at the front of it. When the a/c is off, these pegs stay still, when the compressor is engaged ie a/c turned on, they should spin. :y
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RobG

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Re: A/C compressor clutch
« Reply #2 on: 03 June 2010, 20:18:44 »

I assume that`s on the V6`s Andy. Is it the same on the four pot :-/
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Andy B

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Re: A/C compressor clutch
« Reply #3 on: 03 June 2010, 20:21:16 »

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I assume that`s on the V6`s Andy. Is it the same on the four pot :-/

I doubt there'll be much difference, the theory is the same anyway. You should be able to see the middle spinning with a/c on and stationary when the a/c is off.
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RobG

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Re: A/C compressor clutch
« Reply #4 on: 03 June 2010, 20:23:00 »

Cheers Andy, will go and have a looksee  :)
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cem_devecioglu

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Re: A/C compressor clutch
« Reply #5 on: 03 June 2010, 20:23:45 »

either its a 4 pot or a v6 you must hear "clack" noise after you push the climate button..

I hear that noise also from the clit..only the timing differs..
« Last Edit: 03 June 2010, 20:24:49 by cem_devecioglu »
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RobG

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Re: A/C compressor clutch
« Reply #6 on: 03 June 2010, 20:49:00 »

Quote
Quote
I assume that`s on the V6`s Andy. Is it the same on the four pot :-/

I doubt there'll be much difference, the theory is the same anyway. You should be able to see the middle spinning with a/c on and stationary when the a/c is off.
Andy is this the bit that should spin
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The Red Baron

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Re: A/C compressor clutch
« Reply #7 on: 03 June 2010, 20:54:28 »

your arrow points to the pulley, that turns all the time. the rusty ring is the clutch that engages when you press the button.
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RobG

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Re: A/C compressor clutch
« Reply #8 on: 03 June 2010, 20:56:35 »

Quote
your arrow points to the pulley, that turns all the time. the rusty ring is the clutch that engages when you press the button.
Dumb question. What do I actually see if the clutch engages ::)
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Andy B

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Re: A/C compressor clutch
« Reply #9 on: 03 June 2010, 21:01:45 »

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Quote
your arrow points to the pulley, that turns all the time. the rusty ring is the clutch that engages when you press the button.
Dumb question. What do I actually see if the clutch engages ::)

The belt is always turning the outer pulley, it can't do anything else unless you take it off.  ;) It's the middle that you should see stop & start depending whether the a/c is off or on. Get someone else to press 'ECO' while you're watching the front of the pulley  :y
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The Red Baron

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Re: A/C compressor clutch
« Reply #10 on: 03 June 2010, 21:03:40 »

the whole lot will spin, if you stick your hand down there with the engine offobviously, you will be able to turn the clutch on the front by hand. :y
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Re: A/C compressor clutch
« Reply #11 on: 03 June 2010, 21:05:22 »

Pressed ECO on and off, can`t see anything turning. The three round "pegs" stay static. Is there a relay that operates the clutch or is it new compressor time :'(
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Andy B

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Re: A/C compressor clutch
« Reply #12 on: 03 June 2010, 21:07:06 »

Quote
Pressed ECO on and off, can`t see anything turning. The three round "pegs" stay static. Is there a relay that operates the clutch or is it new compressor time :'(

It could be loads of things, but the most likely is lack of or insufficient refrigerant. there's a low pressure cut off switch in the system that prevents it running when it's lacking refrigerant.  :y
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Re: A/C compressor clutch
« Reply #13 on: 03 June 2010, 21:08:09 »

may need re-gassing, if insufficiant gas then the clutch wont go in.

(must type faster ::)
« Last Edit: 03 June 2010, 21:09:44 by billthebrickie »
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Re: A/C compressor clutch
« Reply #14 on: 03 June 2010, 21:13:19 »

Had it re-gassed, blew cold for a few days then stopped. I can turn the clutch by hand so does that mean the compressor is OK. Is there a relay or fuse I can check/swap out :question
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