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A/C Compressor Gap is 0.025, but AC functions like gap is too wide... V70-XC70 2001

posted by RepairmanJackal on Mon Jun 27 14:25 CST 2016
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last visit: Tue Jun 10 09:52 CST 2014

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My 01 XC70 has classic AC issues usually solved by the "breadclip fix"
The AC run cool and awesome for about 15 minutes before it shuts off. After a couple minutes switched off, it will usually come right back on.

This seems like a pretty common problem with a well-known and simple fix. I was going to use some tiny zip-ties on the clutch to solve the problem.

However... when I grabbed my feeler gauge to check the gap, I found that it was barely over 0.025. It's my understanding that it need to be between 0.030 and 0.040 for proper function.

This would seem to be closer than spec and is inconsistent with the normal failure mode.

It definitely does not run constantly.

Any thoughts? If coolant pressure was too low, I'd expect it wouldn't run very well. But I'm not sure what the pressure is right now... can't seem to find my R134a filer hose with gauge.

Is there anything else that would trigger the failure mode most commonly associated with worn shims?

it's way too damn hot for my car to only give me 15 minute of cool...

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A/C Compressor Gap is 0.025, but AC functions like gap is too wide... V70-XC70 2001

posted by Hovonogila on Tue Aug 16 22:49 CST 2016
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last visit: Mon Sep 22 20:53 CST 2014

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Didn't know about the breadclip fix and my 2004 s80 was symptomatic. I had the system evacuated and recharged but still had the same problem. And it was getting hot here in Michigan. I measured the gap at 30 thousandths using a feeler gauge. I used small nylon ties. I did it from above using a long screwdriver to close the clutch gap. Using long pliers I fed the ties from above and pulled them through. I put in two on each 'ring'. Total of six ties. Since then the AC is working perfect and I've put at least three thousand miles on the car. I don't think you have anything to lose. I was skeptical but it worked. Question is for how long. I'll post again 'when' it fails. In the meantime I saved the cost of a new compressor and labor to install it and recharge the system. It took me about two hours because I piddled around. If I had to do it again it would take twenty minutes. Try it and tell us what happens.
--
I'm stuck on Volvo and Volvo's stuck on me....when it comes to FWD I always listen to the "Oracle of Minnesota'

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A/C Compressor Gap is 0.025, but AC functions like gap is too wide... V70-XC70 2001

posted by Ed7 on Fri Jul 15 16:31 CST 2016
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last visit: Sun Mar 11 13:26 CST 2012

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You could have a relay that's also affected by the heat.
Over time the solder joints break down. Swap it with a similar relay and see what you get. The system at rest equalizes at about 80 psi. Your clutch gap is good if it's not dragging.

Ed
--
'51 R25, '65 R69S, '01 V70 XC, '98 V70 XC

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A/C Compressor Gap is 0.025, but AC functions like gap is too wide... V70-XC70 2001

posted by KlausC on Mon Jun 27 15:36 CST 2016
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last visit: Fri Oct 24 10:15 CST 2014

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The gap needs to be less than .030 to operate normally. At .040 the clutch will no longer engage. It is OK to have a gap of only .010, so long as it is the same all the way around - hard to do with bread clips and zip ties.

Go ahead and reduce the gap. StLouis is worse than FL.

--
Keeping it running is better than buying new

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