repair or replace a/c compressor? - LS1LT1 Forum : LT1, LS1, Camaro, Firebird, Trans Am, Engine Tech Forums

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post #1 of 14 (permalink) Old 05-13-2010, 04:39 PM Thread Starter
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repair or replace a/c compressor?

just figured out that the pool of fluid on my garage floor is lube from my a/c pump. my question is, do i have to replace the pump or can i have it rebuilt?
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post #2 of 14 (permalink) Old 05-13-2010, 06:49 PM
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Only part of a/c compressor that a regular person can replace in the field is the clutch assembly and related parts. Unfortunately, the parts to rebuild the actual
insides of the compressor are not usually available to people outside the rebuilding trade. Having said that, get a new compressor, complete with clutch , and have a/c guy put it on , vacuum out system, and recharge it. I usually recommend doing as much for yourself as one can, but unless you have access to a vacuum pump, guage set, and the knowledge of a/c systems, have a professional do the job.
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post #3 of 14 (permalink) Old 05-13-2010, 07:30 PM
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Ya I agree the a/c is pita
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post #4 of 14 (permalink) Old 05-14-2010, 11:06 AM
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+1 for a new one. Not worth all the time at ALL.

Also deffinetly have an a/c guy do it right. You can get away with just slapping it on but you could easily have a dead compresser 2 weeks after that.
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post #5 of 14 (permalink) Old 05-14-2010, 05:31 PM Thread Starter
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thanks for the replies. a friend of mine had good luck with a sealent/charge mix he bought at the local auto-zone, thinking i'll give that a try first. anybody have an idea how much a new pump and install is gonna cost?
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post #6 of 14 (permalink) Old 05-22-2010, 09:29 AM
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You will need more than just the AC compressor. The dryer and other assorted little bits will need to change also, you'll be in for about $1200 if your lucky!


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post #7 of 14 (permalink) Old 05-22-2010, 09:57 AM
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sealent is for very minor leaks, if you had a puddle of compressor oil on your garage floor the stuff just won't help. Don't waste your time or money. On the other hand, you could learn how to do a/c work. Get a book on the subject read it and learn.
The price of having a a/c professional do the work will be much higher then buying the compressor, reciever/dryer or acumulator, depending on which you have, renting a vacuum pump, and allthe r134 & oil you need, and buying a gauge set. Only thing is, if you don't do it right all that money you spent goes down the drain. Thats why I recomended the a/c shop to begin with.

Last edited by cocobolo95; 05-22-2010 at 09:58 AM. Reason: more info
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post #8 of 14 (permalink) Old 05-26-2010, 12:21 AM
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I'm a commercial refrigeration guy myself so I'm not trying to speak out of turn, but if you're mechanical enough, you can install the parts (comp, drier, etc...) yourself and have the shop evacuate and charge the system for ya, would probably save ya a bundle. I also have worked part time at a garage for ten years and we would charge about 100 bucks or so for the work i just mentioned

also, make sure where the leak is first

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It's all in the crank timing!!!

Last edited by daddy2; 05-26-2010 at 12:24 AM.
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post #9 of 14 (permalink) Old 05-26-2010, 02:03 PM
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several years ago my AC compressor started making noise after a shop routed the battery cable wrong and the serp belt cut through half of it. when i finally got around to replacing the compressor a year later (the AC still worked, the comp just made noise when the ac was off) i bought a reman'd unit from advanced and had a shop flush the entire system. a month later i heard a loud pop and actually thought a gunshot had gone off near me. Turns out it was the compressor blowing up. I had to have the whole system rebuilt to the tune of $960. Luckily i had only paid $100 to the shop to install the compressor in the first place and they gave me $100 twords the full rebuild since i guess they said the guy shouldn't have done it without replacing everything which was probably my fault since i was trying to get it done cheap. I had to fib to advanced a bit because they said they wouldn't warrenty the compressor if the condensor wasn't replaced. i told them i got one at the shop before they put the compressor in so i was able to get the $3xx back that i paid for their compressor. i don't know if something in the system caused it to blow or if the reman'd compressor was just a POS and destroyed my ac system because it blew. i'm guessing the latter. IIRC when they rebuilt the system (new compressor, condensor, and whatever else is in there) they used all new parts.

incidently, it blew in august 06, the week before labor day weekend when i had planned on going to LA for the weekend from phoenix. Luckily i had decided to fly rather than drive since i got a round trip ticket for $108. That would have been a really shitty drive across death valley in august with no AC. The first thing i did after getting back from LA was take the car back to the shop to have the ac fixed again.


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Last edited by BLK95TA; 05-26-2010 at 02:11 PM.
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post #10 of 14 (permalink) Old 05-26-2010, 09:38 PM
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you can have problems with new or reman comps if your old compressor actually fails or burns out. it can contaminate the system and oil, if not removed, flushed and properly evacuated you can have problems

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Quote:
Originally Posted by CraZ28 View Post
It's all in the crank timing!!!
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post #11 of 14 (permalink) Old 05-28-2010, 05:55 PM Thread Starter
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just got an estimate of $700.00 plus tax from a local shop that i trust. price includes comp., dryer, reciever, evac, and dye. prolly get another estimate or two and go from there. using it occasionally in the mean time... not easy in an all black car.
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post #12 of 14 (permalink) Old 05-29-2010, 12:10 AM
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Quote:
Originally Posted by mxzrydr View Post
just got an estimate of $700.00 plus tax from a local shop that i trust. price includes comp., dryer, reciever, evac, and dye. prolly get another estimate or two and go from there. using it occasionally in the mean time... not easy in an all black car.
+1
yeah i hear ya, the seal at the compressor shaft is leaking on mine. thought about replacing the seal, but heck for 2-3 hundred I could just replace the thing with a reman and just do it myself( or just spend that money on some go fast goodies)

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Quote:
Originally Posted by CraZ28 View Post
It's all in the crank timing!!!
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post #13 of 14 (permalink) Old 06-06-2010, 11:16 PM
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Well when mine goes I'm ditching the whole system. Big weight reduction and cleaner engine bay. I will not remove a perfectly working system tho, just waiting.
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post #14 of 14 (permalink) Old 06-07-2010, 11:10 AM
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I was originally going to put in all new stuff myself or at least pull a used comp from the junkyard but I didn't want to spend so much on fixing the system and I didn't want it to crap out a month later. So instead I just got a bypass pulley for $45.00 and had it installed for $90.00. IMO it was the cheapest reliable thing I could do but now my belt is rubbing. I actually just posted a thread about it if anyone has any input on what I should do lol: Serpentine Belt Rubbing. AC bypass pulley needs washer?


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