Can you bypass A/C compressor

Tiny
AMIESIMPSON23
  • MEMBER
  • 2000 OLDSMOBILE INTRIGUE
  • 170,000 MILES
3.5 liter engine. The AC compressor has locked up and I was told that you can use a smaller serpentine belt to bypass the compressor and just not have AC. Is this possible?
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Saturday, December 24th, 2011 AT 6:50 PM

8 Replies

Tiny
ASEMASTER6371
  • EXPERT
Instead of that, you can get a pulley replacement that bolts in after removing the AC compressor so the belt functions correctly. A company named Dorman makes this piece. Have done it many times.

Roy
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Saturday, December 24th, 2011 AT 6:55 PM
Tiny
AMIESIMPSON23
  • MEMBER
Does this involve taking the engine apart?
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Sunday, December 25th, 2011 AT 12:58 AM
Tiny
ASEMASTER6371
  • EXPERT
No, just removing the AC compressor.

Roy
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Sunday, December 25th, 2011 AT 2:42 AM
Tiny
CJ MEDEVAC
  • EXPERT
Will the pulley turn free with the clutch disengaged?

The A/C and several heater positions that include "defrost" will make the clutch engage. If the compressor is locked up then the clutch engages it locks it all down.

What I am saying is, if you do not use those positions maybe it will be fine.

But even better!

Unplug the A/C clutch and use whatever heat positions you want it cannot come turn on.

If the bearings in the pulley is what is locked up you replace the clutch (and be glad the compressor was spared) you are back to square one, follow asemaster6371's instructions.

Keep us informed.

Merry Christmas!

The Medic
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Sunday, December 25th, 2011 AT 3:04 AM
Tiny
GEORGE LEAR
  • MEMBER
For 3.5 motor, use a Duralast 695K6 belt and route from bottom of tension-er around bottom of crank, up over water pump, down around alternator and back up over power steering to tension-er.
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Sunday, May 10th, 2015 AT 4:04 PM
Tiny
PATRICKSPKWA
  • MEMBER
Thanks George Lear! I did not see anyone respond to your post about whether using the 695K6 belt worked or not, so I wanted to confirm the belt works perfectly to bypass the A/C. A $26.00 belt saved me over $1,000.00 to replace my A/C compressor. Also, I discovered this really is the only solution, as there is no dummy pulley for the 3.5l.

Thanks again for your post!
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Saturday, February 27th, 2016 AT 1:01 PM
Tiny
VLEFAIVE
  • MEMBER
Hello all, I have an 02 Oldsmobile 3.5 and I am in the process of bypassing the compressor as well. I am going to try this belt too and have heard that it is 95 inch? My connection at the dealer mentioned the possibility a 80 inch belt is more appropriate. Wondering if you would mind posting a diagram of how you did it Patrick if you are on these days, would be appreciated truly, could trade notes before I start the job.
Hello from Whitby ON.
Vince
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Tuesday, May 3rd, 2016 AT 10:22 AM
Tiny
VLEFAIVE
  • MEMBER
Done, yes the 69" belt works like a charm.
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Thursday, June 2nd, 2016 AT 10:42 AM

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