Identifying whistling noise - Pontiac GTO Forum
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post #1 of 8 (permalink) Old 07-11-2015, 06:35 PM Thread Starter
 
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Identifying whistling noise

I have a 06 GTO I've only had a few months, the car has about 76,000 miles on it. I notice when I start the car and its running there is kind of a squeak/whistling noise. I cant tell if its a belt or pulley, or could it be the water pump? I have no loss of coolant and the only seepage I see is from the radiator cap, which I will replace. Should I go ahead and replace the water pump? and is that something my local NAPA store can order for me? Thanks
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post #2 of 8 (permalink) Old 07-11-2015, 06:43 PM
 
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Its probably belt, tensioner or idler. Don't think its pump. If you have to replace the pump the local stores have the pump and stat in stock and its easy to change. Btw both mine and my budys water pumps started leaking at similar milleage.
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post #3 of 8 (permalink) Old 07-11-2015, 09:38 PM
 
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My money is on belt or belt tensioner as well. The stock tensioner has a tendency to make a weird grinding or whistling noise.

Start the car and gently spray a little PB-50 Blaster All Purpose Lubricant on the belt tensioner where it spins on the spindle. DO NOT SPRAY THE BELT. Should quiet right up. If that is the original belt, definately replace as well.

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post #4 of 8 (permalink) Old 07-11-2015, 10:03 PM Thread Starter
 
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Thanks for the replies guys, I appreciate it
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post #5 of 8 (permalink) Old 07-12-2015, 09:39 PM
 
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Don't thank us yet. Only helps if that was indeed what was making the noise, lol. Doubt its the water pump. Water pumps have 2 modes.....they either work, or they don't. If they don't, 99.9% of the time they are dripping or leaking. You said yours isn't leaking, so just deducted it down to belt noise.

Mark - Plainfield, IL http://markquitterracing.com

2004 GTO A4 - LS1
Competition Cam
JBA LTH
K&N CAI
Yank 3600 Stall Speed
Flow Master exhaust
Dyno Tuned
Whiteline Suspension upgrades
B&G Lowering springs
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post #6 of 8 (permalink) Old 07-15-2015, 08:10 AM
 
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Just from reading your subject title, I was going to suggest your windshield wipers. Some windshield wipers have holes in the mounting brackets, and while driving they tend to make a whistling sound...

So, with that NOT being the issue...

Take a few minutes out of your day if possible, and stop by a friendly neighborhood mechanic, pop the hood, and see what you guys can come up with.
My next suggestion, would also be the belt tensioner.

Keep us updated on your problem, and if you're able to solve it.

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post #7 of 8 (permalink) Old 07-15-2015, 08:33 AM
 
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It's been brought up over the years that the alternator can make a whistling noise.

Larry

2005 GTO Quick - 1984 Honda V65 Magna Quicker - 2004 Z06 Quickest
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post #8 of 8 (permalink) Old 07-15-2015, 11:05 AM Thread Starter
 
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This sound is only on start up a high pitched squeak, I'm going to replace belt/tensioner
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