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2004 to 2008 F-150 and Mark-LT 4.2L, 4.6L and 5.4L equipped F-150s and Mark-LTs

 
 
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Old Thu, May 24th, 2012, 11:00 PM
kenjunior kenjunior is offline
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Default Overdrive shutter, can recreate

Got a question:

Run truck up to hiway speed, doesn't matter, if its 55 thru 75 mph, if its not shifted into OD and I hit the set cruise button tranny will shutter like its coming apart. If I let it shift into OD THEN set cruise its fine, if I let cruise (hitting resume) take truck to hiway speeds its fine.

No truck mods at all, Gryphon programmer with basic tune. I haven't tried much in tinkering, I just know how to get around the shutter.

Any thoughts???

KenJunior
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