2004 F150 HERITAGE 4.2L V6 with a manual transmission 140k miles. From 40 to 45 mph it shakes a…

cameronK

2004 F150 HERITAGE 4.2L V6 with a manual transmission 140k miles. From 40 to 45 mph it shakes a little bit, regardless of gear. It also seems to shake at those speeds when braking. No issue at high speeds, so I ruled out wheel bearings...maybe unrelated issues?

Comments (4)
No. 1-4
cameronK
cameronK

Didn't think of that. Still seems like that would cause vibrations at more than that narrow speed range but I guess stuff like that can sneak up on you. Thanks for the tips!

Believe231
Believe231

Don't rule out a driveline issue like u-joints or damaged driveshaft, especailly if a vibration more than shaking. Good luck!

cameronK
cameronK

Probably not the tires. It did this last year with different tires. I'll look into having the brakes checked out. If the rotors are cheap enough, I might just put new ones on since that's pretty easy. I just replaced upper control arms and lower ball joints so that's probably not an issue (had alignment checked afterwards). But maybe the shocks are bad....just seems odd since it only happens at a very specific speed range, which led me to believe that it might be related to my transmission.

Believe231
Believe231

I'd rotate the tires and see if the shaking sensation moves to a different spot and be sure they're balanced. If the shaking doesn't change or move, then have the brakes checked for rotor runout/wear, and the suspension/shocks inspected for wear. I like to refer folks to reputable & competent alignment shops for issues like yours.