Water Pump or Timing belt?

[Tommy the Greek]

Good evening everyone, ever since last week I've been hearing a hissing sound coming from the passenger side of the engine and it has been getting louder. Now my car has 45k miles on it, and I rarely go over 6K rpm's, is possible my w-pump bearing is going or my t-belt has started making noise. The pitch of the hissing gets higher as I rev her up.
Tomorrow I am going to change my drive belt to see if that is it. If it is not, I will check my drive belt tensioner, maybe thats it.
Is it a common problem that the w-pump bearing goes bad inn this pump?
Please advise, thank you.

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'95 SHO ATX, 55W foglights, coneless, fishtank mod, white/mocha cloth interior, 45K, Mobil 1 10W-30, build date 12/13/94.
Below is a pic of her @ 28K miles (Nov. 6, 2000)off interstate 87, overlooking Lake George, NY.

www.roushind.com
AIM: kalamos73

 

[Rob94]

Use a long wooden dowel, or a long screwdriver, and with the engine running, CAREFULLY place one end of individual accessories and the other to your ear. Sort of the old coffee can and string phone kids used to play with. My money is on the tensioner.

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Rob
White 94MTX
K&N Filter otherwise stock

 

[sdpatt]

Rarely does the water pump's bearing fail. The pumps usually fail by leaking at the shaft seal. Do a more detailed inspection of the source of the noise.


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Scott

1991, 252K miles, glass hood, police grill, SVO shifter, Catz fogs,
K&N, 73mm MAF, Superchip, PP Y-pipe, Borla cat-back, 190 lph pump
Eibach/Tokico/polyurethane, SHO Shop front & rear strut braces,
16x7.5" Moda R1, 225/55ZR16 Bridgestone RE730, -1 deg camber x 4,
Class II hitch, Silver award at the SHOklahoma Car Show

 

[Blast7]

Usually a hissing sound is the fuel pump.

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1991 Black MTX
K&N Filtercharger
PP Motor Mounts
Rod Shifter
Blazer Tech Fogs
Want to Buy:
~1st Gen Black rust free trunklid
~1st Gen Black rust free front door mouldings

 

[Tommy the Greek]

Originally posted by Blast7:
Usually a hissing sound is the fuel pump.

You are correct, the fuel pump does make a hissing noise but that is not the issue here. The noise is coming out of the front pass. engine compartment near the alternator.