A/C carnage
Thread Starter
Instructor
Joined: Dec 2007
Posts: 197
Likes: 1
From: Pennsylvania
A/C carnage
I had the A/C on during a 95^ day, wasn't thinking too much about it and tached it up through the first 3 gears. I guess the compressor does not like to spin over 5000 rpm. It fried the clutch, or melted it. The pictures show metal on metal now.
I'm going to scrounge the junkyard tommorow and hope GM's share this compressor, I'm not going to pay $300 for a clutch that I'm sure is the same in other vehicles.
Also, when I finally get into editing the .bin files of the ecm I am going to put the compressor shut off at like 60% throttle. I see no real reason to allow the compressor to engage if the computer reads a 98% tps reading.....
I'm going to scrounge the junkyard tommorow and hope GM's share this compressor, I'm not going to pay $300 for a clutch that I'm sure is the same in other vehicles.
Also, when I finally get into editing the .bin files of the ecm I am going to put the compressor shut off at like 60% throttle. I see no real reason to allow the compressor to engage if the computer reads a 98% tps reading.....
Thread Starter
Instructor
Joined: Dec 2007
Posts: 197
Likes: 1
From: Pennsylvania
The computer should not engage the compressor if it sees WOT, so most of the time its fine, but if your tps is out of adjustment, your carpet is bunched up or you don't have it planted, something is probably going to give. Theres allot of pressure spinning it that fast.
Drifting
Joined: Feb 2006
Posts: 1,423
Likes: 96
From: Magnolia Tx
The compressor is very common in the junk yards. The same unit
fits camaro, firebird and some trucks. You'll find a clutch. I put a
rebuilt one on mine tonight. benny
p.s. yours is newer, i may be wrong.
but toss the frisbee from your waterpump
while your tools are out.
fits camaro, firebird and some trucks. You'll find a clutch. I put a
rebuilt one on mine tonight. benny
p.s. yours is newer, i may be wrong.
but toss the frisbee from your waterpump
while your tools are out.
Last edited by Benny42; Jun 26, 2008 at 12:44 AM.
Le Mans Master
Joined: Dec 2000
Posts: 7,839
Likes: 22
From: San Diego, Ca
Your Vette uses a Nippondenso Compressor, Model Number 10PA20C and it's unique to the Vette - '88 to '96, non ZR1. The aftermarket clutch assembly is usually $150 or less. I'd make sure the compressor didn't seize first. Can you turn the shaft by hand?
Team Owner
Joined: Mar 2001
Posts: 30,837
Likes: 289
From: Boston, Dallas, Detroit, SoCal, back to Boston MA
The computer should not engage the compressor if it sees WOT, so most of the time its fine, but if your tps is out of adjustment, your carpet is bunched up or you don't have it planted, something is probably going to give. Theres allot of pressure spinning it that fast.
It may have been about to go anyways.
Thread Starter
Instructor
Joined: Dec 2007
Posts: 197
Likes: 1
From: Pennsylvania
The compressor is ok, the clutch material melted, balled up and sprayed all over. Smells bad, but the compressor works ok, just squeals a little from the lack of friction material.
Thread Starter
Instructor
Joined: Dec 2007
Posts: 197
Likes: 1
From: Pennsylvania
I have a seeping water pump, so when I fix that with a new water pump, there will be no silly weight on it.
The only good news from the junkyard is they have a few lt1 caprices, they charge $20 for a intake manifold.
The only good news from the junkyard is they have a few lt1 caprices, they charge $20 for a intake manifold.
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Racer
Joined: Jun 2006
Posts: 477
Likes: 1
From: Jefferson Georgia
I had the A/C on during a 95^ day, wasn't thinking too much about it and tached it up through the first 3 gears. I guess the compressor does not like to spin over 5000 rpm. It fried the clutch, or melted it. The pictures show metal on metal now.
I'm going to scrounge the junkyard tommorow and hope GM's share this compressor, I'm not going to pay $300 for a clutch that I'm sure is the same in other vehicles.
Also, when I finally get into editing the .bin files of the ecm I am going to put the compressor shut off at like 60% throttle. I see no real reason to allow the compressor to engage if the computer reads a 98% tps reading.....
I'm going to scrounge the junkyard tommorow and hope GM's share this compressor, I'm not going to pay $300 for a clutch that I'm sure is the same in other vehicles.
Also, when I finally get into editing the .bin files of the ecm I am going to put the compressor shut off at like 60% throttle. I see no real reason to allow the compressor to engage if the computer reads a 98% tps reading.....
. It was only the clutch as the shaft turned with no problems. The factory clutches have rubber acting as the spring and over a long time that rubber breaks down and lets loose. Found a new one on that auction site everyone knows and loves for about 140.00, put it on and all was well. You might pop that belt off and make sure the bearing spins freely on the pulley. Mine was all hosed up but I didn't know it until I replaced the clutch about six months later.
Instructor
Joined: Apr 2006
Posts: 225
Likes: 0
From: Port Aransas TX
Me Too
I too fried mine years ago one hot summer day in SA (105 degrees farenheit and 5500 RPM). The rubber melted in mine. You can run it that way for a little bit, but you'll need to replace the belt and the clutch eventually. I got a generic clutch at O'Reiley's but I did need to change the electrical connector. The bummer was the way they routed the A/C lines on the LT4. I had to discharge the car to unbolt the lines so I had access to the clutch. The hard part was getting the unit loose from the compressor. This happened over three years ago and was the first maintenance I performed on my car.
Larry
Larry