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Old 10-20-2011, 05:23 PM
duckloads duckloads is offline
2004 supercab xlt, 4.0
 
Join Date: Aug 2011
Posts: 155
Default Driveline shudder under braking

I have a driveline shudder under firm braking. It happens worse when braking from highway speed. The shudder get worse the slower the truck gets like around 15-20mph.

I can hit my overdrive off button prior to braking and the shudder completely goes away. The shudder is like the auto trans is having a hard time downshifting out if o/d by itself.

The truck has 71k miles. At 60k I changed trans fluid and filter.

Any ideas?
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2004 super cab, 4 door xlt with appearance package and 4.0 cammer V-6 with auto trans and 2wd fitted with a Leer topper. Sounds via Alpine head unit and power pack through infinity Kappa components front and Kappas rear.
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Old 10-22-2011, 01:24 PM
duckloads duckloads is offline
2004 supercab xlt, 4.0
 
Join Date: Aug 2011
Posts: 155
Default Re: Driveline shudder under braking

Well I solved the problem. Long story short, I dropped the trans pan again, but this time I used a motorcraft filter. On my last trans service I used a no name brand of filter from orielly's.

This trans seems to only like motorcraft filters. The trans now downshifts perfectly while braking.

I had a BMW once whose ZF trans would only work with Filtran brand filters. It seems the Ford is just as picky.
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2004 super cab, 4 door xlt with appearance package and 4.0 cammer V-6 with auto trans and 2wd fitted with a Leer topper. Sounds via Alpine head unit and power pack through infinity Kappa components front and Kappas rear.
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