When driving down the road, there is a constant "thud thud thud" coming from the front driver's side of my 99 Ranger. I've been looking online for about two hours now, going back and forth to my truck to see if I can figure out the problem. All I've come up with is that it's the sway bar links. they're both disconnected, and I'm going to replace them anyway, but would that cause the constant thudding? Any help is much appreciated, thank you!

-Brad

 

Welcome to FTE.

Did the Thud noise come about suddenly, After you disconnected the sway bar links, or after some other event????

 

Welcome to FTE. This is a great site for all things Ranger.

Tell us some more about your truck, such as total miles, two or four wheel drive.

If you have 4wd, you may have a sticky slip joint in the front driveshaft that is causing the "thud."

 

Let me also ask is this a "sound" thud or a "feeling" thud or both?

Something obvious like loosened up lug nuts would sound like what you are saying. I would personally not drive it until you have done some inspections to make sure there is not something bad getting ready to happen and then severely limit its use until you get is straight.