Hi all.
My 2003 f150 5.4 super cab fx4 has a weird problem I would really appreciate some advice on. Under acceleration, there is a really quite bad vibration from the steering wheel. When I take my foot off the throttle, the vibration is much much less noticeable. It's worst around 60mph, better at 40 and better at 70/80. Still there but less so. The truck has 175k miles. I appreciate this is very vague and it could be anything from badly out of balance wheel to steering to suspension to transmission, but is there anything common that goes wrong here?

Thx.

 

Had same problem with my old 04 fx4 supercab. I jacked the rearend up and put it in drive it spun slowly so I could see and one of my driveshaft bolts feel out and another one almost did. Mine had same symptoms.

 

That's interesting. I hadn't considered it could be the rear driveshafts But it makes sense it guess. Thanks. Will check those out tomorrow.

 

Ok let us no.

 

Was that it??

 

Unfortunately not - Drive shafts look fine. :-(

 

You checked and made sure all your bolts were tightened? It could also be one of your wheels out of alignment. Just trying to help you man.

 

I did - they look ok to me. I had the alighment done a while back but will get it reset in case it's drifted out. I'm not that far off needing new tires. I really appreciate the advice.

 

My truck was shaking real bad not to long ago from having a bad coil pack on cylinder 4

 

Yeah now that you mentioned that my old truck did that to once when it needed a new coil