Question about 1998 Buick Century

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4t60e buuuzzzzzzzz Accel from standstill for buzzing sound which is simular to the buzz of a failing power steering pump. It's louder up to about 30 mph. An Aamco technician listened to it and said the torque converter was making the noise. Will just replacing the torque converter be good enough? I have changed the transmission fluid and added a lucas tranny syrup. The overall noise is somewhat softer, but still does the same.

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  • George DeTreville
    George DeTreville May 07, 2009

    I have since taken the car to a transmission guy I know and he said the noise was the 4t60E Pump making the noise and this was general internal wear. It seems the easiest solution is to obtain a low-mileage used 4t60E, and install it, after which I will renew the transmission fluid and filter. Taking the transmission down, removing the side cover and replacing the pump is the cheapest way to go; when I hoisted the car up on the lift with the engine running, recently, the noise didn't seem to come from the bellhousing.

  • George DeTreville
    George DeTreville May 07, 2009

    I have since taken the car to a transmission guy I know and he said the noise was the 4t60E Pump making the noise and this was general internal wear. It seems the easiest solution is to obtain a low-mileage used 4t60E, and install it, after which I will renew the transmission fluid and filter. Taking the transmission down, removing the side cover and replacing the pump is the cheapest way to go; when I hoisted the car up on the lift with the engine running, recently, the noise didn't seem to come from the bellhousing.

  • George DeTreville
    George DeTreville Dec 13, 2012

    Replace the transmission oil pump. Yes, this involves removing the 4t60E side cover.

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I would get second opinion or third. hard to diagonose from here. make sure you go through all possilibities before doing that kind of repair

Posted on Apr 24, 2009

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