Question:

I have a 2000 Explorer XLT with 57,000 miles. There is a strong vibration that increases and decreases with speed and resembles a thumping sound under the floorboard. Tires and brakes are okay. Any suggestions appreciated. JW

Response:

I’m no expert, but I’d see if your U joints need replacement. You can do this by twisting your driveshaft and see if there is any play in it. Paul

– Hide quoted text — Show quoted text ->I have a 2000 Explorer XLT with 57,000 miles. There is a > strong vibration that increases and decreases with speed > and resembles a thumping sound under the floorboard. > Tires and brakes are okay. > Any suggestions appreciated. > JW

Response:

    Check your universal joint. I just replaced mine last night for a similar, but very slight, vibration.

|I have a 2000 Explorer XLT with 57,000 miles. There is a | strong vibration that increases and decreases with speed | and resembles a thumping sound under the floorboard. | | Tires and brakes are okay. | | Any suggestions appreciated. | | JW

Response: