Thumping feel on driver’s floorboard left foot only?

2005 FORD FOCUS
165,000 MILES • 4 CYL • 2WD • AUTOMATIC
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96&4
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When I take my car from park but more so from reverse, I feel three thumps in my left foot only. Two quick then a slight pause and a third. I don’t feel it by the gas pedal but only by the driver's door and under my left foot.
Apr 8, 2023 at 6:36 PM
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JACOBANDNICKOLAS
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Hi,

What you described sounds like the exhaust may be hitting under the vehicle. This can be caused if an exhaust component comes loose or if you have a failing motor mount.

If you can, have a helper apply the parking brake and apply the brakes firmly. Have them shift into reverse while from the side (safe distance) you watch the exhaust under the vehicle to see if anything is bouncing and if you can hear it hit.

Since this happens when you first shift, it must be something loose under the vehicle. This is my first suspect.

Let me know what you find.

Take care and Happy Easter,

Joe
Apr 8, 2023 at 10:15 PM