odd sounds!?

Discussion in 'Chevy Blazer Forum (GMC Jimmy)' started by lidz05, Feb 17, 2010.

  1. lidz05

    lidz05 New Member

    My blazer, when cold, starts up and drives with a loud (fan-like) sound. It stops after maybe a minute...is this something to be concerned about?
    Also, there is a light whining sound when the car is idle then gets slightly louder when accelerating. The sound seems to be from the engine, but unsure where exactly?

    Thanks for helping me build my automotive IQ.....
  2. wis bang

    wis bang Rockstar 100 Posts

    The fan like sound at startup is just that, the fan is driven 100% until the silicone in the fan clutch warms up and the fan starts to slip.

    The squeel could be your belt tension idle pully or your alternator bearings, water pump...something driven. You can often locate which component by placing a long screwdriver near each one and placing your ear on the handle. Just be careful of the moving parts!
  3. vncj96

    vncj96 Epic Member 5+ Years 1000 Posts

    the squeel could also ba a whole in the flex tube in the air intake, the fan sound coul also be the blower fan

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