Thump thump sound after not driving for a week

jericho

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Was on a trip and did not drive the car for a week. Started her up and drove off and there is a loud thumping from the back of the car. Drive faster, thump faster… but it went away after a while… when the sound went away, I noticed that hard braking would bring back similar but faster thumping… again goes away after a while.

I think I should bring it in for service, but I’m not sure how to reproduce the issue consistently, do you guys think it’s the brake regen or the drum brakes seizing up?? Advice would be most appreciated!!
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Carsinmyblood

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Tires can develop flat spots. Cars in storage should be moved a foot or two once in a while.

My best guess.
 

JohnnyForensic

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Was on a trip and did not drive the car for a week. Started her up and drove off and there is a loud thumping from the back of the car. Drive faster, thump faster… but it went away after a while… when the sound went away, I noticed that hard braking would bring back similar but faster thumping… again goes away after a while.

I think I should bring it in for service, but I’m not sure how to reproduce the issue consistently, do you guys think it’s the brake regen or the drum brakes seizing up?? Advice would be most appreciated!!
Take a look at this thread:

https://www.macheforum.com/site/thr...g-sound-and-ford-roadside-on-speed-dial.4730/
 

BMT1071

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Tires can develop flat spots. Cars in storage should be moved a foot or two once in a while.

My best guess.
A week does not qualify as storage. Virtually impossible for a modern radial tire to flat spot that quickly.
 

generaltso

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do you guys think it’s the brake regen or the drum brakes seizing up?? Advice would be most appreciated!!
Brake regen wouldn't make a noise and the MME doesn't have drum brakes. It could be some rust buildup on the rotors from sitting. If that's the case, some hard braking to ensure the friction brakes are engaged should clear it off. If that doesn't work, I'd make an appointment to have the dealer check it out.
 


JBA

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Brake regen wouldn't make a noise and the MME doesn't have drum brakes. It could be some rust buildup on the rotors from sitting. If that's the case, some hard braking to ensure the friction brakes are engaged should clear it off. If that doesn't work, I'd make an appointment to have the dealer check it out.
99% sure this is it.
 
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jericho

jericho

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Brake regen wouldn't make a noise and the MME doesn't have drum brakes. It could be some rust buildup on the rotors from sitting. If that's the case, some hard braking to ensure the friction brakes are engaged should clear it off. If that doesn't work, I'd make an appointment to have the dealer check it out.
Thanks, but disc brakes causing thumping is weird! I’ve only heard/experienced grinding with stuck disc brakes … have to drive it more to figure out what is going on
 
 




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