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06-03-2019, 05:54 PM | #1 |
Member
Join Date: Sep 2015
Posts: 47
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noise when coasting
I developed a noise under the car when coasting - not all the time, but a lot . (low speed -I'm afraid to go faster now that I hear this)
The noise stops when I depress the clutch.Sort of bap-bap bap as if something is hitting something else while rotating. Makes me nervous! Visual once-over not helpful Any suggestions as to where to look? |
06-03-2019, 05:58 PM | #2 |
Senior Member
Join Date: May 2015
Posts: 8,150
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Re: noise when coasting
What year and model of car?
"The noise stops when I depress the clutch." is a clue - transmission problem.....
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The only thing nice about being imperfect is the joy it brings to others.... "Silver rings, your butt! Them's washers!" "We shot our way out of that town for a dollar's worth of steel holes!" - from 'The Wild Bunch' - 1969 https://www.youtube.com/watch?v=7NReUd2_0u0 |
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06-04-2019, 08:50 AM | #3 |
Senior Member
Join Date: Oct 2011
Location: Shelton, WA
Posts: 3,800
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Re: noise when coasting
Perhaps the Universal joint. Do you get out of 1st gear? If the noise goes away in second you have lost a tooth on either 1st gear or the cluster. I am afraid the transmission probably has to come out to find the problem. If your car has a 39 or earlier transmission you can easily take the top off and have a look.
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06-04-2019, 01:02 PM | #4 |
Senior Member
Join Date: May 2010
Location: Solihull, England.
Posts: 8,755
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Re: noise when coasting
If early ford with torque tube, possibly a broken pin in the driveshaft coupler.
Could be a loose pinion nut if a heavier sound and only on the overrun. I think there was a similar post here recently that was thought to be a pinion nut loose. |
06-04-2019, 01:23 PM | #5 |
Senior Member
Join Date: Jul 2014
Location: Iowa
Posts: 1,634
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Re: noise when coasting
It is also possible that the bolt holding the U-joint in place has worked loose. That is the one inside the joint using a special thick washer, on the transmission output shaft. If the U-joint works loose. it will contact the inside of the cover on the front end of he torque tube, making a noise. It is easier to detach the rear axle and pull t back than to remove the engine and transmission.
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06-04-2019, 07:45 PM | #6 |
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Join Date: May 2010
Location: Fairfax, VA
Posts: 3,393
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Re: noise when coasting
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