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Jim Grant Tech Tips Jim Grant Tech Tips
A collection of helpful articles based on reader submissions
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  Jim Grant's Tech TipsJim Grant's Tech Tips
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

Honda Accord, Worn CV Boots?

Q: What are the symptoms of a worn CV Boot on a Honda Accord? Is there some warning sign or noise? How serious is it to drive a vehicle with a worn CV Boot(s)?

- Chris M.

A: I could not say that there is a symptom (sound, noise or vibration) that I could put with a worn CV boot. You really don’t know there is a problem until the boot breaks/fails. A CV boot is a rubber cover that is used to hold and seal in grease for lubricating the CV joint and to prevent dirt and water from entering the CV joint. Because the CV boot is a rubber type product, it is prone to failure over time. Often, you can see cracks forming in the rubber of the boot. Once the boot breaks the grease for the CV joint spills out and dirt and water can enter the CV joint. The CV joint is a very precisely machined component. Water and dirt entering the CV joint will cause it to fail. It does not take long for the dirty work to happen and once the damage starts there is no going back. The CV joint will have to be replaced. Sometimes, you can hear a CV boot slap once it breaks, but it most cases there is no warning that the boot has failed. We usually, see the customer after the CV joint has been damaged. A damaged CV joint often starts clicking as the steering is turned and the vehicle is moving. If ignored the click will become a snap and then the CV joint fails completely. Ask your technician to show you the CV boots when your vehicle is up on the lift. CV boots are one of those “you have to see it” type things to really understand. If there are cracks in the CV boots have the boots serviced/replaced before other components are damaged.

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