2004 F150 FX4 5.4 3V.
At 73,000 miles, The engine had tapping noise.
Took to dealer.
Cleaned Throttle body
As far as I know engine was not pulled.
After the work, tapping was gone. But when leaving dealership
I felt an oscillating vibration in steering wheel at 1100 rpms in overdrive.
(Prior to work it was smooth as silk.)
While still in overdrive, the more load I put on engine the worse it gets.
( It seems to do it ONLY at approx. 1100 RPMs.)
The second I leave off the throttle it stops. Also, problem is basically gone
at any Rpm when overdrive is not engaged. It also has a little rough idle, which
seems to change at times.I took it back to dealer, put it on machine and "found nothing"
Also it does not throw a code. Normal reasoning would say it's the trans.
But it started immeditally after leaving dealer. And they did no trans work.
I took it to a different Ford dealer, and local mechanic, they both felt the vibration.
But nobody can figure it out.
Also, it has had 3 different sets of tires since then. And replaced COPS twice and
nothing changed. Maybe timing chain is off a tooth, bad injector, I have no
Sunday, May 20th, 2012 AT 4:27 PM