My 2006 F150 got the "shudders"
#1
06-11-2010, 02:52 PM
Join Date: Jun 2010
Posts: 1
Likes: 0
Received 0 Likes
on
0 Posts
My 2006 F150 got the "shudders"
I’ve got a 2 WD 2006 FORD F150 XLT (8200 GVW model) with a “Supercab” (extended cab) and long (8’) box (hence, long wheelbase) with a trailer-towing package. Bought second hand. Only 40,000 miles on the odometer. Wheels are 17” steel with four General M & S tires (6 ply tread - 2 ply Polyester + 2 ply nylon + 2 ply steel and 2 ply Polyester sidewall). Obviously a “work” truck, so I don’t expect it to ride like a Cadillac (or a Lincoln, if that is your preference).
<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com
fficeffice" /><o
></o>
Problem: With the box empty, when going over a bump/pot hole/speed bump, can feel a “shudder” (rapid up and down motion with a slight lateral component) through the driver’s seat (no excessive bounce upon impact and/or roll and no front end “diving” upon braking).
<o></o>
In a more or less controlled setting, when driving over a single speed bump in a paved shopping plaza parking lot at about 25 mph, can sense that the “shudder” does not occur when the front wheels make contact with the speed bump. Rear wheels pass over the speed bump and cab/driver’s seat “shudders”. Persists for 3-5 seconds.
<o></o>
Have replaced the rear shocks with Monroe “Flex” as specified for the F150, 8200 GVW vehicle and there is only marginal, if any, improvement. Tried lowering tire pressure to 32 psi (rated at 65 psi when loaded to capacity) – no change. Leaf springs and shackles appear to be OK – no evidence of overloading on “overload bumpers”. No evidence of twist/crack(s)/repairs to frame. Cab is free to float - no solid attachments between frame and cab. Checked all eight body mounts – one nut missing - have since replaced. No effect. “Rubber donuts” in cab body mounts appear to be in good shape with no damage or deterioration.
<o></o>
Has the cab ever been removed for maintenance or repair? Could have been (given evidence of one body mount nut missing) but don’t know.
<o></o>
Obviously don’t want to spend more money needlessly and I would appreciate any help/suggestions that you can give me.
<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com
fficeffice" /><o></o>Problem: With the box empty, when going over a bump/pot hole/speed bump, can feel a “shudder” (rapid up and down motion with a slight lateral component) through the driver’s seat (no excessive bounce upon impact and/or roll and no front end “diving” upon braking).
<o
></o>In a more or less controlled setting, when driving over a single speed bump in a paved shopping plaza parking lot at about 25 mph, can sense that the “shudder” does not occur when the front wheels make contact with the speed bump. Rear wheels pass over the speed bump and cab/driver’s seat “shudders”. Persists for 3-5 seconds.
<o
></o>Have replaced the rear shocks with Monroe “Flex” as specified for the F150, 8200 GVW vehicle and there is only marginal, if any, improvement. Tried lowering tire pressure to 32 psi (rated at 65 psi when loaded to capacity) – no change. Leaf springs and shackles appear to be OK – no evidence of overloading on “overload bumpers”. No evidence of twist/crack(s)/repairs to frame. Cab is free to float - no solid attachments between frame and cab. Checked all eight body mounts – one nut missing - have since replaced. No effect. “Rubber donuts” in cab body mounts appear to be in good shape with no damage or deterioration.
<o
></o>Has the cab ever been removed for maintenance or repair? Could have been (given evidence of one body mount nut missing) but don’t know.
<o
></o>Obviously don’t want to spend more money needlessly and I would appreciate any help/suggestions that you can give me.
Thread
Thread Starter
Forum
Replies
Last Post
plum bob
1961 - 1966 F-100 & Larger F-Series Trucks
18
05-31-2018 12:06 PM
