clunk after tunning - Ford Powerstroke Diesel Forum
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post #1 of 13 Old 03-12-2013, 05:51 PM Thread Starter
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clunk after tunning

anybody have the same thing going on ? when i accelerate and let off there is some what of a clunk.. i dont remember it doing this when it was stcok.

2012 ccsb XL Fx4 oxford white
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post #2 of 13 Old 03-13-2013, 03:28 AM
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Mine does same exact thing! seems to do it more often at lower (parking lot) speeds.. but it will occasionally it will do it at normal driving too when I let off the gas. it's not every time tho for me.

I never noticed it when I was stock, but now that my truck is deleted, I notice every little knock, clunk, or noise it makes and think it's because of the tuner/delete which gets me all freaked out and thinking I should return to stock. ugh.
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post #3 of 13 Old 03-13-2013, 09:41 AM Thread Starter
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Yea same for me not every time .
I was wondering if was a trans solenoid like I've heard of others replacing

2012 ccsb XL Fx4 oxford white
5in MBRP straight pipe
H&S mini max
wet okolole seat covers
kenwood ddx719 dvd head unit
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post #4 of 13 Old 03-15-2013, 10:22 AM Thread Starter
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i updated to the newest software kinda of seems better...

2012 ccsb XL Fx4 oxford white
5in MBRP straight pipe
H&S mini max
wet okolole seat covers
kenwood ddx719 dvd head unit
weather tech mats
5%tint
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post #5 of 13 Old 03-24-2013, 10:43 AM
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My truck, my buddies 2011 f350, and my 2012 f550 at work all do this. It usually does it when shifting usually 1-2 shift or if u are at a slower rolling speed and get on the gas it makes the clunk. My only guess is that there is some slop somewhere in the driveline so when power is applied it snaps forward making the clunk sound. With this many vehicles doing this im guessing its a poor design or machining more so than a major issue...hope this helps....if anybody else knows what it is it would be interesting to know!!

2012 F250 King Ranch
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post #6 of 13 Old 03-25-2013, 07:37 AM
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mine does the same thing. i was thinking it is the driveline flexing also. ladder bars for a possible fix???
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post #7 of 13 Old 03-25-2013, 08:01 AM
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I'm not sure if its that far back....sounds like its in the back of the trans or transfer case. I wish ladder bars would cure it....that way I have an excuse to get them other than I want a set lol

2012 F250 King Ranch
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post #8 of 13 Old 03-25-2013, 08:32 AM
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I believe the clunking noise is our slip yoke at the end of our transfer case and I believe that excessive axle wrap is the cause of it. So if I am right, ladder bars would fix it. Someone correct me if I am wrong. I'll try and mount the go pro under the truck to try and pinpoint the noise
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post #9 of 13 Old 03-25-2013, 09:04 AM Thread Starter
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cool im looking forward to that video

2012 ccsb XL Fx4 oxford white
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H&S mini max
wet okolole seat covers
kenwood ddx719 dvd head unit
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post #10 of 13 Old 03-26-2013, 04:35 PM
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Would love to see it also.....the wifey is gonna love this!! Im still in trouble for buying the lift and wheels/tires.... lol I see ladder bars in the near future for the truck

2012 F250 King Ranch
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