2005 Pontiac Grand Prix 3.8 liter.
Question: We have a 2005 Pontiac Grand Prix GT
3800 series engine and the car makes a whirring
noise (Sound like a manual transmission in
reverses) when accelerating from a stop. It first
started only when turning but now does it heading
If the noise you are describing is related to engine
speed, and not vehicle speed, then you may have
low power steering fluid, or another belt driven
accessory making the noise. Check the power
steering fluid level first.
If that is ok, then a belt idler pulley or alternator
may be the culprit. Removing the belt and starting
the car for a few seconds will at least tell that it is
drive belt related or not if the noise goes away.
Pontiac Grand Prix Transmission Noise
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