Ford f150 Shaking

ford
f150

#1

Purchased a 2000 F150 (over 200,000 miles) from a company fleet. The truck is not driven on a daily basis, only when needed to haul something to land field. One morning I had to drive the truck. When I pulled out of the driveway and began acceleration the truck began to shake violently. After some experimentation I came to the following conclusion. The vehicle starts to shake when a speed of 45 mph reached. If I try to hold the speed between 45-55 mph the shaking continues. If I let off of the accelerator, the shaking stops, if I accelerate thru 45, the shaking stops. The shaking is not from wheels, rotors, axle etc. The check engine lite also came on during this time. When the shaking starts, if I attempt to accelerate, the truck looses power briefly then picks up. I didn’t pay alot for the truck and really don’t know how much I am willing to put into it. If it doesn’t cost alot would like to keep the truck running. Thanks for any advice.


#2

@btpoole

The first thing I would do is retrieve fault codes

Are your plugs up to date?

What engine do you have?


#3

I would bet it needs new plugs but before I took it in for any work wanted to get some suggestions. I was just shocked that it did this so suddenly with no prior warning. When I parked it prior to first incident it was running fine. Has the V8 triton.
Thanks for the comment.


#4

Oh Boy, lots of luck changing the plugs on that! I would check the U-joints first.


#5

You might also carefully check the intake tract between the throttle body and MAF sensor for any air leaks due to cracked hoses, loose clamps, etc.


#6

Thanks to you all for suggestions. Spoke with local repair guy who I trust, well presently. He believes it has to do with the plugs. It was a company vehicle and not sure how well it was maintained. Will post up date.
Thanks again


#7

You might check the tires for liquid. Repeatedly inflating a leaky tire with canned “fix-a-flat” can result in the shaking you describe.