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1996 grand prix 3.4L ac compressor- 2 different ones- which one?

My 1996 grand prix gtp 3.4L needs a new ac compressor (terrible noise when NOT using ac). Shop is having difficulty b/c there are apparently 2 different ac compressors it could be on the 3.4- one with a bracket @the 4:00 position (if I'm not mistaken) & one without. Where should they look on mine to determine which one mine is/needs? They said parts cant help them even with vin# bc all that is given is a part# & not the details about the 4:00 thing. Does this make sense to anyone? They also say they dont see a way to bypass it for now (although I see ac comp. bypass pulleys for sale online- not sure if that does what it sounds like.) They said the same belt runs the ac comp, pwr steering, & alternator, so if its not fixed & goes out I'm stranded. I would appreciate any info at this point!

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  • Cars & Trucks Master
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There are two models and they are not even close to being the same looks. The model was redisgned in mid production. The first model had the 4 oclock mounting the second had a 2 oclock mounting. http://www.oreillyauto.com/site/c/search/A!s!C+Compressor/02645/C0354.oap?year=1996&make=Pontiac&model=Grand%2BPrix&vi=1255979

Posted on Feb 10, 2014

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Posted on Jan 02, 2017

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SOURCE: How to bypass the A/C clutch-compressor and drive the power steer

It can be done. But, its alot of work and you will need a new bracket for the PS pump. As bad as it sounds, it will be much easier and cheaper if you just replace the AC clutch or compressor. Try to find a used one at a junckyard. Its a very silly design.

Posted on Jul 03, 2009

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SOURCE: 1998 Jeep Granc Cherokee AC Compressor

Before all this.Check the spring loaded tensioner hasn't seized.If the chirping sound IS the a/c comp. and the bypass pulley is on,yes,the a/c is out of the picture.Plan B might be to get a comp. from a wreckers yard.1/4 the price???Hope this helps you

Posted on Nov 03, 2009

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teds_repairs
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SOURCE: What's the CHEAPEST fix for my loud ac compressor?

I have a2004 mustang with a 3.9 making the same noise,and the shop replaced the AC compressor and all belt tensioners. I found that the noise is the timing chain tensionors .

Posted on Oct 28, 2012

Mustgo
  • 2359 Answers

SOURCE: bad ac comp. pulley. bypass possible?

Go to your auto part store and ask for Dorman A/C compressor bypass pulley.

Check out a sample video here.
https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&ved=0CE8QuAIwAA&url=http%3A%2F%2Fwww.autozone.com%2Fautozone%2Fparts%2FDorman-A-C-Compressor-Bypass-Pulley%2F_%2FN-91tb7%3FitemIdentifier%3D593937_0_0_&ei=WCnXUszmC4aIygHul4GACg&usg=AFQjCNHJchbMS7f3TM2c0CNnLJRak7uC9A&sig2=n8fPLM_KV5YnEcSD_FW3eA&bvm=bv.59568121,d.aWc

Posted on Jan 16, 2014

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