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Q: Car makes a single loud pop when first backing up or pulling foward. Sounds like s hammer.

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What can it be?

My car has 128800 miles.
My car has an automatic transmission.

  • You should have the lower control arm ball joints checked to see if they are loose.

  • Also, check the sway bar link arms and sway bar bushings for wear or damage.

An inspection of your suspension system by a qualified mechanic may be in order.

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