Shakes or Wobbles problem
2004 Ford F150 V8 Four Wheel Drive Automatic 87,000 miles
Please help, I recently had new brakes all around and new tires put on my truck. Less than a week later I started having vibration in the truck between 50 and 62 mph. I had it back to the shop 5 times, they checked the drive line re ballanced the tires, rechecked the alignment. They said everything looked fine but swapped out one tire that could possibly be out of round. I have had the rear differential drained and oil replaced, the transmission flushed and torque converter shutter guard added. The vibration only happens every three to four days and will stop when I come to a complete stop but it starts out light and gets so bad you have to pull over and stop. The transmission does as it is supposed to, going through the gears and doesn't jerk. The vibration usually happens on a straight stretch, never going up a grade or when in close traffic below 50mph and slowing for red lights or traffic. I have tried to speed up but it shakes so bad (like running over railroad tracks) that you have to slow down. Then a rolling stop won't make it quit either. Only a complete stop. There are no check engine lights on the dash and no codes when hooked up to a diagnostic machine. I even had another company check out the brakes and alignment and they said everything is fine. I would greatly appreciate any info you have.