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A collection of helpful articles based on reader submissions
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Below is a collection of Jim Grant's Tech Tips sorted by Vehicle Make. These Tech Tips were answers to questions submitted to Jim by users over the course of many years.
If you have any questions, please feel free to email us.



Lincoln - Mercury
  Jim Grant's Tech Tips

'99 Nissan Maxima, Brake Groans

Q: During the last couple of weeks, my ’99 Nissan Maxima emits a loud groaning noise whenever I let up on the brake after stopping. Once I press the accelerator, the noise goes away. I was told a couple of months ago that my rear brakes were getting worn. Is the noise related to my brakes or do I need to get it checked out separately?

- Eric T.

Q:A brake inspection is in order. The noise you’re describing almost sounds like a brake is not releasing fully. There are some common problems that are known for creating groaning brakes on brake pedal release. 1. Brake pads can stick or bind in their holders due to rust build-up. The brake caliper has enough hydraulic power to apply the brake pads. The problem is the brake pad does not move away from the brake rotor as easily as it should when the brake is released. A good wire brushing and lube in the correct places is the fix. 2. Brake calipers must move freely on their slides. Most braking systems today use what is called a floating caliper design. It is not uncommon for rust to form on the slides or guide pins for the brake calipers. This creates a condition that is similar to the first mentioned rusted brake pad problem. But in this case, part of the brake caliper is holding the brake pad against the rotor. The result is pretty much the same. A good cleaning, lube and some new brake hardware may be all that is needed to stop the brake groans.

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