Have a 2002 f150 2WD. Truck makes a clunking sound at low speed, cruising speed and high speed but not all the time. When I turn the truck to the left it sometimes makes a horrible grinding/squealing sound. Tires all have less than 7000 miles on them and are a good name brand. Suggestions?

SOURCE: Clunking from front end in 2WD

ASE mechanic here:
check the king pins in the front end and the u joints for any kind of play. sounds like front end play while four wheel drive is engaged and stills is affected for a while when two wheel drive is activated. this year truck most definitely has a manual four wheel linkage that could be the problem too. try lubing up any moving linkage and i would shift it in neutral. keep me posted

SOURCE: 2001 2wd, v6 tracker LT, 110K miles; Grinding, clunking nosie

If it sounds like a rumble from back wheels it may be the rear end going out. Mine has been replaced twice with used rear end. You should be able to confirm it by looking at the rear tires both sides of tire for an oil leak or wet spot on tire or rim.

Mike Butler

• 6674 Answers
• Posted on May 26, 2009

SOURCE: 1999 f150 2wd transmission clunk

You can usually tell by grabbing the driveshaft & turning it by hand back & forth & push up & down, side to side looking for play in the joint.

L.K.Computers Ltd

• 73 Answers
• Posted on Aug 30, 2009

SOURCE: Grinding noise from rear end when making sharp turns.

rear diff damage ...check

SOURCE: I have a 2007 F150

Hello, It would not hurt to check and would cost you nothing to do so. The valving controlling the vacuum to the actuators could be giving you partial engagement. But if only on one side is doing it, I would think it would pull to the passenger side when in 2 wheel drive.

I had a client with a similar noise and on his truck the front driveshaft had a bad u-joint. Because the driveshaft is to your right, at the center of the truck; he also blamed the passengers wheel. You get a lot of sympathetic motion in the drivetrain. If you think about it, wear can occur on one side of the u-joint. When the shaft is being dragged along by sympathetic motion the driveshaft is being pulled, but when you hit 4x4, now the shaft is pushing and the pressure shifts to the opposite side of the u-joint. Under pressure the joint is now tight.

You may observe rust and grease "tracking" in the areas of the U-joint when you check the front driveshaft. I hope my solution is very helpful in solving your problem. Would appreciate a note when you find the cause of this problem.