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  1. DTC's, Problems & Troubleshooting
    Ok so, let me start by saying ive worked on cars almost all my life and so has my brothers and father. None of us can figure this out... 2002 grand prix makes a chirping noise as if it has a bad pulley bearing. This noise comes and goes but only starts when the car heats up. This noise stops as...
    engine noise squeeks
  2. Cams/Heads/Valvetrain
    A substantial clunking has started when the engine is idling but goes away when the engine speeds up. And when the engine is turned off, there is generally one last clunk. It is on a 1990 Buick Lesabre and the noise is in the area of the power steering pump and the serpentine belt tensioner...
    clunking engine noise idle noise valve noise
  3. General Tech
    I have what i can only desccribe as some sort of growl coming from the engine compartments of my 2000 GTP. It happen shile accelerating heavily. In order to try to narrow down the possibilities. It kind of sounds like one of the pulleys is vibrating but I none of them seem loose. I can make...
    engine noise under load vibration
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