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Jim Grant's Tech Tips
90 Toyota
Corolla, CV Boot Problems
Q: My daughter took her ‘90 Toyota Corolla, with 79,000 miles,
in for an inspection. It passed, but she was told that her CV boot on
the front right needed replacing (the last time we used this station for
an oil change and tire rotation they said the left CV boot needed replacing
- which we did). Never heard of this part, is this legitimate? We did
not do it this time but wonder if we should have.
A: Yes,
the Constant Velocity (CV) boot is a legitimate part on your Toyota. Virtually
every front wheel drive vehicle manufactured has CV boot protecting the
CV joint. CV joints are a type of universal joint that provides for the
transfer of power from the engine to the wheels, while allowing for the
up and down motion of the suspension and steering motion as well. A common
cause for CV joint failure is a cracked or broken CV boot. A cracked or
failing CV boot allows the CV joint's lubricant to leak out and dirt and
water to enter. Dirt entering the CV joint will cause it to grind itself
to failure. The result is an expensive repair bill. While servicing a
vehicle, any technician worth his\hers wrench set will be on the lookout
for problems such as a failing CV boot. Early identification and repair
of a failing CV boot will save the customer money and prevent a possible
road side failure.
By the way, it seems that you’re not comfortable with the repair
shop. Don't hesitate to get a second opinion and, while the vehicle’s
up on the lift being inspected, ask the technician to point out the failing
part. Reputable repair shops enjoy educating their customers about their
vehicles. Knowledgeable customers are easier to work for.
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