I have a loud clunking noise coming from the back half of the car.

Asked by Jun 25, 2015 at 02:57 PM about the 2006 Ford Freestar SE

Question type: Maintenance & Repair

The clunks get faster (and louder) as the car goes faster (it seems related to tire rotation speed rather than to engine RPM).  The clunks are one every few seconds at 5-10 mph, and I can also feel them in the car. Sounds bad...is it?

2 Answers

87,025

Could be a broken tire or a slipped belt inside the tire, a tire shop can do this for you.

6,235

If it's a loud clunking and you can feel the vibration then it's not a tire problem. It sounds like a bad universal joint on the driveshaft. A universal joint holds the driveshaft in place and they DO go bad after time.Take the car into a repair shop. I wouldn't drive the car any farther than you absolutely have to and not any faster than 25 MPH. If the driveshaft comes loose while the car is moving, that could be very dangerous to you and to other drivers on the road. A spinning driveshaft coming loose all of a sudden can do a lot of damage to the car's underbody and can come right thru the floor too or even cause the car to flip over. All racecars have a driveshaft safety loop to keep that from happening but unfortunately regular cars and trucks do not have that feature. This could be very dangerous if it's loose so have it checked by a qualified ASE certified mechanic if possible or at least a mechanic you know and trust as soon as possible. Better safe than sorry... Good Luck, Kenny/MrBlueOval

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