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Squeak then overheat!

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Old Jan 3, 2008 | 08:23 PM
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Default Squeak then overheat!

Ok heres the skinny.
I had an intermittent squeak coming from the pulley directley under the air bridge..I know this because I sprayed some liquid wrench on it and the squeak stopped!

I just picked up the car from having the headlight gears replaced with brass gears and the temp went to 250.

I got home and looked under the car but no anti freeze.

Is it the water pump?

If it is what is the average cost to have this replaced including labor?

Thanks
John
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Old Jan 3, 2008 | 08:31 PM
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John check out your radiators, it might be over loaded with leaves. Had that problem myself....after every run when the leaves were on the ground I had to clear it out. Vettes are bottom feeders big time!
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Old Jan 3, 2008 | 08:32 PM
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Originally Posted by BT-01-vette
John check out your radiators, it might be over loaded with leaves. Had that problem myself....after every run when the leaves were on the ground I had to clear it out. Vettes are bottom feeders big time!
But
Isnt the squeak a sign of the water pump ready to fail?
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Old Jan 3, 2008 | 08:37 PM
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Originally Posted by J.P.M.
But
Isnt the squeak a sign of the water pump ready to fail?

Don't know about the Vette but I had a 1978 280Z that squeaked and the water pump went. When that happened you could wiggle the fan not to mention coolant was spooling out
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Old Jan 3, 2008 | 08:39 PM
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Originally Posted by J.P.M.
But
Isnt the squeak a sign of the water pump ready to fail?
Yes
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Old Jan 3, 2008 | 08:47 PM
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Not sure, when water pumps fail they leak or squeal from bearing failures. I am a bit hesitate because you said liquid wrench shut it up, just really not sure if you could have gotten it back in the bearing. Where did you apply the lubricant? Might have been belt squeal.

You might have sucked up a plastic bag.

If the water pump is squealing and not leaking it will still circulate the coolant.
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Old Jan 3, 2008 | 08:51 PM
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not leaking..i sprayed Liquid wrench directly on the pulley shaftconnecting to the front of the engine...maybe a thermostat?
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Old Jan 3, 2008 | 09:29 PM
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John, can't really help you with the situation but I wanted to let you know I finally ordered an exhaust. I ended up going with the granatelli instead of the B&B bulletts. Should be here on the 8th. I also have the vararam sitting right next to me, but I am not sure when I am gonna try and put that on as well. Good luck w/the car.

Dave
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Old Jan 3, 2008 | 09:51 PM
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Are you cooling fans running?
Flip on the ac and see if they run.
Odd that you would have this problem after head lite repair I think.

I told you to just slop some Zaino in there.
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Old Jan 3, 2008 | 09:54 PM
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Could be a coincidence. I'd say the overheating is probably a blocked radiator. The squeak could be a tensioner...they're frequently prone to noise.
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Old Jan 4, 2008 | 03:29 AM
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Heres a great description of the belt system that E-T posted. it should help you track down where the problem lies without spending unnecessary megabucks

Belt Squeal Courtesy E-T

You have two belt systems on your car. One is the drive belt system, the other is the air conditioner belt system. The drive belt system consists of the serpentine belt, the power steering pump, alternator/gen, water pump, harmonic balancer, idler pulley, belt auto-tensioner pulley. The AC belt system consists of the compressor, harmonic balancer, idler pulley, belt auto-tensioner pulley.

First thing you need to do is isolate which system is squeaking. This can be done by releasing tension on the drive belt tensioner and removing the serpentine belt. This is the outboard belt of the two belt systems. If the squeak goes away, then it’s the belt or a component of the drive system.

If the squeak is still there, then it’s a component of the ac belt system.
To verify this, release the belt tension from the tensioner and remove the belt. If the squeak goes away, then it’s a component of the ac belt system.

A common problem is the belt tensioner on either system but verifying which system is at fault is the proper procedure.

You could replace both belts, but you may still have the squeak. If you want to find the culprit, isolate the system, then spray the belt of the offending system and see if the squeak goes away. Try to stay away from the idler and tensioner while spraying. I find that belt dressing may be good to identify a belt problem, but it is a temporary fix at best.

The real problem has been the tensioner and the idler. Both of these components have a sealed bearing which has been know to dry up or redirect the grease away from the bearing, thus causing the squeak.

If you find that a belt change does not correct the problem, then a change of both the idler and tensioner pulley is in order. If you just change the idler or the tensioner alone, it will cause the other component to go bad in a month or so. This has been the case with many members. There was a change made to the dusts seals to help correct this problem in newer C5's. Lots of tensioner and idler pulleys have been identified as a problem and it can affect either system. One is not more prevalent than the other. So find out which system is squeaking first, in the drive belt system. It could also be the bearing of the alternator, power steering pump, or water pump too, but these are less probable.

I hope this makes things a little clearer



Last edited by DeeGee; Jan 4, 2008 at 11:15 AM.
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Old Jan 4, 2008 | 07:59 AM
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Thanks but that doesnt pertain to this issue as we know its the water pump thats squeaking and this is an issue of overheating!

Originally Posted by DeeGee
Heres a great description of the belt system that E-T posted. it should help you track down where the problem lies without spending unnecessary megabucks

Belt Squeal Courtesy E-T

You have two belt systems on your car. One is the drive belt system, the other is the air conditioner belt system. The drive belt system consists of the serpentine belt, the power steering pump, alternator/gen, water pump, harmonic balancer, idler pulley, belt auto-tensioner pulley. The AC belt system consists of the compressor, harmonic balancer, idler pulley, belt auto-tensioner pulley.

First thing you need to do is isolate which system is squeaking. This can be done by releasing tension on the drive belt tensioner and removing the serpentine belt. This is the outboard belt of the two belt systems. If the squeak goes away, then it’s the belt or a component of the drive system.

If the squeak is still there, then it’s a component of the ac belt system.
To verify this, release the belt tension from the tensioner and remove the belt. If the squeak goes away, then it’s a component of the ac belt system.

A common problem is the belt tensioner on either system but verifying which system is at fault is the proper procedure.

You could replace both belts, but you may still have the squeak. If you want to find the culprit, isolate the system, then spray the belt of the offending system and see if the squeak goes away. Try to stay away from the idler and tensioner while spraying. I find that belt dressing may be good to identify a belt problem, but it is a temporary fix at best.

The real problem has been the tensioner and the idler. Both of these components have a sealed bearing which has been know to dry up or redirect the grease away from the bearing, thus causing the squeak.

If you find that a belt change does not correct the problem, then a change of both the idler and tensioner pulley is in order. If you just change the idler or the tensioner alone, it will cause the other component to go bad in a month or so. This has been the case with many members. There was a change made to the dusts seals to help correct this problem in newer C5's. Lots of tensioner and idler pulleys have been identified as a problem and it can affect either system. One is not more prevalent than the other. So find out which system is squeaking first, in the drive belt system. It could also be the bearing of the alternator, power steering pump, or water pump too, but these are less probable.

I hope this makes things a little clearer
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Old Jan 4, 2008 | 08:26 AM
  #13  
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Mine does the same squeak. Only when cold and warming up. My water pump has a very small leak, like a few drops overnight. Its enough to get the belt and pulley slightly wet and causes a squeak until it warms up.

If you are overheating, check the coolant level.
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Old Jan 4, 2008 | 08:56 AM
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Good point as my fluid level is low....I talked to Contes Corvettes and they said the thermastat might be getting stuck...I dont think its the water pump as its not leaking fluid...I am going to drain and add new fluid and see what happens...Ill keep you guys posted
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Old Jan 4, 2008 | 11:15 AM
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Originally Posted by J.P.M.
Thanks but that doesnt pertain to this issue as we know its the water pump thats squeaking and this is an issue of overheating!
I think in that case you've answered your own question. A thermostats cheaper to change on spec. i'd start with that
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