I have a constant noise, somewhat like a chirp, that I'm having trouble finding. I ran the car with both belts off and no noise. Then ran it with just the ac belt on, still no noise. Put a new serpintine belt, tensioner, and ider pulley on and it still makes the chirp noise. Any thoughts? I did notice a small puddle, aprx 4'', under the car this morning. Could the noise be coming from my water pump?
2003 GMC Sierra extended cab 2500hd 4x4, gas 6.0L
Sierra Engine Noise - Chirping , Squealing
Re: Sierra Engine Noise - Chirping , Squealing
Could be the water pump, especially since you're seeing leakage. When you had the belt off did you shake the pulleys and idlers to check for play?
Idler pulleys and alternator bearings are the first place I look when there's rogue noises. Take a piece of small hose and use it to listen around the engine compartment. Be careful about getting clothes, fingers, or the hose around the moving parts. The hose will allow you to narrow down the general location of he sound.
But, if you're leaking it needs fixed even if not the source of the sound- they never get better, always worse. I would use a piece of cardboard under it and look exactly where it's leaking.
Idler pulleys and alternator bearings are the first place I look when there's rogue noises. Take a piece of small hose and use it to listen around the engine compartment. Be careful about getting clothes, fingers, or the hose around the moving parts. The hose will allow you to narrow down the general location of he sound.
But, if you're leaking it needs fixed even if not the source of the sound- they never get better, always worse. I would use a piece of cardboard under it and look exactly where it's leaking.
Shade-tree mechanic
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Re: Sierra Engine Noise - Chirping , Squealing
Ya, i think the leaking water pump is your problem. Coolant contaminates the belt and makes it chirp.032500HD wrote:I have a constant noise, somewhat like a chirp, that I'm having trouble finding. I ran the car with both belts off and no noise. Then ran it with just the ac belt on, still no noise. Put a new serpintine belt, tensioner, and ider pulley on and it still makes the chirp noise. Any thoughts? I did notice a small puddle, aprx 4'', under the car this morning. Could the noise be coming from my water pump?
2003 GMC Sierra extended cab 2500hd 4x4, gas 6.0L
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