1990 f150 weird hitting problem
09-24-2009, 10:10 PM
#1
Senior Member
Thread Starter
Join Date: Sep 2009
Posts: 234
Likes: 0
Received 0 Likes
on
0 Posts
1990 f150 weird hitting problem
i have a 1990 f150 with a 300 straight 6 with 280k miles and its been running strong since new well the other day when i let off the gas its almost like it catches in the tranny and hits goes hits goes each time it hits it slows down 2 or 3 mph and it will do this hitting all the way till i stop but i have no problems when accelerating no ruff shifting nothing what do you guys think?
09-25-2009, 10:13 AM
#2
Senior Member
Is it automatic or manual trans? I'm assuming it's an automatic. If so it could be a vacuum problem. Is the hitting like a jerk, or the transmission shifting back and forth between gears? I know there are sensors that effect shifting, the only one I can think of off the top of my head is the ABS sensor on the rear end which also effects the transmission.