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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

Dodge Dynasty, Smoking Front Tire

Q: We have a '90 Dodge Dynasty with a 3.3 engine. The front passenger tire gets so hot that we have to pull over and let it cool down. We had it in three times to a garage and replaced the caliper twice. The last time we replaced the caliper we replaced the rotor, pads and caliper which still does not work so we brought it into a brake shop hoping that they could find the problem. He said there was an air bubble on the opposite side, that was probably putting pressure on the one that was giving us the problem so we kept our fingers crossed and drove it for about a day without a hitch. Then, low and behold we were out driving for about five minutes and the tire started to smoke really bad and you could smell something burning. We pulled over for about 20 minutes and then we managed to get it home. This is so annoying that none of the mechanics or the brake specialists can tell us what it is...


A: I'm kind of surprised that no mention was made of the brake hose. Your vehicle is plenty old enough to have problems such as degrading brake hoses. The inside of the brake hose can be swollen and even coming apart. Under the right conditions the brake hose can actually prevent the release of brake fluid. An air bubble in that or any other brake line won't do that. If you can get the brake to stick, pull into a shop and ask them to jack up that wheel. Once the wheel is up, try to turn the wheel to be sure it's still binding/sticking. Then with a wrench, open the bleeder screw to that brake caliper. If suddenly the wheel turns free you know brake fluid pressure was holding the brake on not the brake caliper. If the wheel turns free the brake hose is suspect.

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