Truck has been vibrating under throttle. HELP - Ford Powerstroke Diesel Forum
 
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post #1 of 10 Old 04-11-2010, 02:24 AM Thread Starter
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Truck has been vibrating under throttle. HELP

i don't know if its coincidence but after i put a new rear main seal in i noticed vibration while driving. starts between 40 and 50 mph once im past that it quits. sometimes vibrates in coming out a stop and turning. since there is no vibe when im parked and just revving it i feel like its safe to rule out any motor problems but i could be wrong.

in search of the problem i ended up putting in warn hubs because i thought that was it.. not the case, still get the vibe.

all new u joints and carrier bearing, still vibes.

i am stumped... some other possibilities i have considered are the flex plate being warped or a spring being broken, but the trans is fairly new. also i noticed a plastic ring on the back side of the hub is just dangling on the axle... wtf

i tried to be very specific as to what is happening. please help if you can!

2002 F-250 POWERSTROKE 4X4

BANKS 4" Turbo-Back w/ Power Elbow
Converted from 3/4 to 1TON
Napa 6637 DIY Intake
6.0 Trans. Cooler
Dipricol Gauges
Warn Hubs
TW 6 Pos.

And Some Other Boring Stuff

THANK GOD FOR YOUR BLESSINGS EVERYDAY
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post #2 of 10 Old 04-11-2010, 02:40 AM
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Originally Posted by lcducote View Post
i don't know if its coincidence but after i put a new rear main seal in i noticed vibration while driving. starts between 40 and 50 mph once im past that it quits. sometimes vibrates in coming out a stop and turning. since there is no vibe when im parked and just revving it i feel like its safe to rule out any motor problems but i could be wrong.

in search of the problem i ended up putting in warn hubs because i thought that was it.. not the case, still get the vibe.

all new u joints and carrier bearing, still vibes.

i am stumped... some other possibilities i have considered are the flex plate being warped or a spring being broken, but the trans is fairly new. also i noticed a plastic ring on the back side of the hub is just dangling on the axle... wtf

i tried to be very specific as to what is happening. please help if you can!
The dangling seal is common. Mine are that way too. There is a new design that is supposed to be better but they will have to wait until there is another reason to take the front end apart.

Vibs: I was going to suggest everything you have already done. You didn't leave a shim out of the carrier bearing support did you?

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post #3 of 10 Old 04-11-2010, 04:10 AM
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dont rule out the motor, the tc locks up around 38 mph. Thats when a shake would be felt if its the motor.

2008 6.4 f250 lariat 4wd
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post #4 of 10 Old 04-11-2010, 07:54 AM
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also check the front wheel bearings, inner and outer. see if u can lift the axle shaft on each side in the front. if you can move it alot the inner bearings are out on that side

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post #5 of 10 Old 04-11-2010, 02:45 PM Thread Starter
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i had a shop do the carrier bearing so i don't know about the shim. what do i need to do to check?

i have considered the tc... the vibe is always under throttle, once i let of the gas it dies out slowly and is gone???

2002 F-250 POWERSTROKE 4X4

BANKS 4" Turbo-Back w/ Power Elbow
Converted from 3/4 to 1TON
Napa 6637 DIY Intake
6.0 Trans. Cooler
Dipricol Gauges
Warn Hubs
TW 6 Pos.

And Some Other Boring Stuff

THANK GOD FOR YOUR BLESSINGS EVERYDAY
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post #6 of 10 Old 04-11-2010, 03:08 PM
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Quote:
Originally Posted by lcducote View Post
i had a shop do the carrier bearing so i don't know about the shim. what do i need to do to check?

i have considered the tc... the vibe is always under throttle, once i let of the gas it dies out slowly and is gone???
It doesn't appear you truck is lifted. If so you wouls expect to see 1/4" +/- of shim for every inch of lift. If no lift then this is probably not your problem. I would look at the bolts and see if the nuts are in the same relationship as before. No "new" bolt threads exposed.

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post #7 of 10 Old 04-11-2010, 03:11 PM Thread Starter
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HANK

leveled in the front and converted rear springs to one ton, but the vibe was there before i did that.

can you be clearer on what you mean by the bolt thing????

2002 F-250 POWERSTROKE 4X4

BANKS 4" Turbo-Back w/ Power Elbow
Converted from 3/4 to 1TON
Napa 6637 DIY Intake
6.0 Trans. Cooler
Dipricol Gauges
Warn Hubs
TW 6 Pos.

And Some Other Boring Stuff

THANK GOD FOR YOUR BLESSINGS EVERYDAY

Last edited by lcducote; 04-11-2010 at 08:50 PM.
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post #8 of 10 Old 04-12-2010, 11:49 PM Thread Starter
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could it be an injector not working properly?

2002 F-250 POWERSTROKE 4X4

BANKS 4" Turbo-Back w/ Power Elbow
Converted from 3/4 to 1TON
Napa 6637 DIY Intake
6.0 Trans. Cooler
Dipricol Gauges
Warn Hubs
TW 6 Pos.

And Some Other Boring Stuff

THANK GOD FOR YOUR BLESSINGS EVERYDAY
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post #9 of 10 Old 04-13-2010, 12:44 AM
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you got me stumped..... you done everything i would have suggested also.

hello, my name is gary
new: 2008 f250 lariat 4x4 ccsb 6.4.....
sold,2011 f250 xlt 4x4 crewcab 6.2 shortbox 5 star tuned
sold,early, 09/98, 1999 f350 lariat 4x4 crewcab 7.3 dually
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sold, 2003 f350 lariat 4x4 crewcab 6.0 longbox.
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post #10 of 10 Old 04-13-2010, 08:32 PM Thread Starter
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anything about it being the injector?

2002 F-250 POWERSTROKE 4X4

BANKS 4" Turbo-Back w/ Power Elbow
Converted from 3/4 to 1TON
Napa 6637 DIY Intake
6.0 Trans. Cooler
Dipricol Gauges
Warn Hubs
TW 6 Pos.

And Some Other Boring Stuff

THANK GOD FOR YOUR BLESSINGS EVERYDAY
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