sunpension help - Ford Powerstroke Diesel Forum
 
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post #1 of 4 Old 12-28-2011, 09:36 PM Thread Starter
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sunpension help

Hey my 08 f350. I have a bad jumping problem when I hit a bump. The truck will bounce an an want stop bouncing until I let off the gas. Its hard to explain but it bounce like a bad tire with a nott n the tire but worse.. an it only do it when I hit a bump or pot whole .. do u guys have any idea what it can be.. any help will be great please.

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post #2 of 4 Old 12-29-2011, 03:36 AM
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What you are expirencing is a "Death Wobble". Lots of stuff could be causing it but it all comes down to loose or worn parts in the front end.

Tie rod ends, Ball Joints, steering stabilier, steering box, uni bearings, loose wheels etc..... basicly anything that is involved in your front axle could be a suspect. Stop by a goo dfront end shop and have them take a good look. Might be simple might be $$$$$.

My 05 at 95k miles I ran thru all the ball joints, tie rod ends and a steering box and track bar links........

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post #3 of 4 Old 12-29-2011, 06:59 AM
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just another thought on this aspect.. what tune are you running on that spartan, are you running the highest HP tune?

When i first loaded my Tunes from IDP.. i loaded the extreme race tune first.. the gas pedal is so sensitive in OD that whenever i would hit a bump while in OD (45mph +) my foot would bounce on the gas pedal and make the truck surge and feel as if it were bouncing.. it was pretty annoying.. i have since gone with the extreme street tune.. still plenty of power, smoother in OD, and better MPG.. just a thought..

Kris

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post #4 of 4 Old 12-29-2011, 08:22 AM
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Quote:
Originally Posted by p8ntballn2 View Post
just another thought on this aspect.. what tune are you running on that spartan, are you running the highest HP tune?

When i first loaded my Tunes from IDP.. i loaded the extreme race tune first.. the gas pedal is so sensitive in OD that whenever i would hit a bump while in OD (45mph +) my foot would bounce on the gas pedal and make the truck surge and feel as if it were bouncing.. it was pretty annoying.. i have since gone with the extreme street tune.. still plenty of power, smoother in OD, and better MPG.. just a thought..
Happens to me every time i haul something i usually turn it down on spartan

08 King Ranch f-250 Cat/DPF Delete Job 1 Spartan Phalanx Flash Console, 250 tune 325/60/20 Nitto Terra Grappler Stock Wheels!

08 King Ranch F-250 Cat/DPF Delete Job 3 Spartan Phalanx Flash Console, 275 tune 325/60/20 BFG Mud Terrain KM 2

09 King Ranch F-450 Cat/DPF Delete Spartan Phalanx Flash Console, 275 tune Front Leveling kit 22.5 Pete Style Alcoas with 37" Goodyear tires(16 ply)
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