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97 taco with 2.7 - Weird noise

Discussion in '4 Cylinder' started by HardyMan, Dec 19, 2012.

  1. Dec 19, 2012 at 7:59 AM
    #1
    HardyMan

    HardyMan [OP] Active Member

    Joined:
    Oct 27, 2011
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    #65951
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    First Name:
    Chris
    Montana
    Vehicle:
    97 tacoma 4X4 2.7
    Rear Breather, All round Bilstein struts & Shocks, 3" AAL. Hidden Gun rack
    Can't figure out what this noise is, so i am seeing if anyone else had this noise before.

    I am getting a noise from the front of my enigne. It almost sounds like my water pump is about to go out. But its not leaking anything and I had it tested at the shop i go to and they said it is still good. They scoped it and said that the noise is coming from the alternator. But when they put in two other new alternators they made the same noise. They couldn't figure out what was causing the alternator to make that noise. The only thing they could tell me is maybe with the tension of the belts on the waterpump is just enough to tweak it to make that noise.

    Oh and when the engine builds up the rmps the noise gets louder.

    Any ideas is very much appreciated.
     
  2. Dec 19, 2012 at 8:10 AM
    #2
    BamaToy1997

    BamaToy1997 ASE Master Tech Vendor

    Joined:
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    Bill
    Navarre, FL
    Vehicle:
    1997 Tacoma 4X4 AKA "Blue Beast"
    Multi-point tow hooks, new bored 2.7L engine, custom paint. 3 inch adjustable Fabtech front coils, 2.5 inch rear AAL. Front Aussie locker. LED bed lights. Full LED conversion interior and exterior. Relentless Fabrication front and rear bumpers. 4X4innovation sliders. BAMF bed rack. CVT rooftop tent.
    I would look at replacing the belt and having the tension properly set. We have an adjustable tension on the alternator mount. Proper tension is approximately 1/2 inch deflection with 5-7 lbs of force on the longest stretch of open belt.
     
  3. Dec 19, 2012 at 2:00 PM
    #3
    HardyMan

    HardyMan [OP] Active Member

    Joined:
    Oct 27, 2011
    Member:
    #65951
    Messages:
    30
    Gender:
    Male
    First Name:
    Chris
    Montana
    Vehicle:
    97 tacoma 4X4 2.7
    Rear Breather, All round Bilstein struts & Shocks, 3" AAL. Hidden Gun rack

    Thank you for the tension info on what the belts should be at. I will check that. The belts are new belts that i put on about 4 months ago.
     
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