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post #1 of 3 (permalink) Old 01-29-2010, 03:34 AM Thread Starter
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Constant downshift?

Ok like the title says my tranny keeps constantly downshifting when im goin less that 55mph above that its just fine but if i stay any below 55 for a little while it will downshift and a few times going up hill it was bucking a little bit the tranny is a jasper reman I had no choice as it shelled on the way to TS last year and was the only thing avalible anyway its only got around 6,000mi on it it was fine before i got my current injectors and tunes could this be the issue? i sent it back a little while ago to get the shifting changed as it was still stock shifting and that took care of the previous problem of it tring to jump ahead gears if its tuning no doubt johnathan will fix it but im just weondering if maybe its somethin else?

early 99 F350 Supercab longbed 4x4, Diprical gauges,GTP38R, Swamps competion fuel system with bowl delete,custom intake, 4in downpipe to 6in stacks, 200/30% hybrids from swamps, tuned by swamps, head studs.main studs, WOP cryo forged rods, ceramic coated pistons,Adrenalin HPOP,DI cam. Train horns, Ranchand front bumper DMI rear, Kumho kl71
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post #2 of 3 (permalink) Old 01-29-2010, 04:20 AM
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Re: Constant downshift?

Thinking it might be programing.....not sure with the SDs though...on my 4EOD OBS with one of my TWildman tunes does the same, i.e., downshifts from OD to third at about the same speed. I don't mind it unless real icy winter driving....Hmm not sure on the bucking goin up hill though????

Give Jonthan a call or shoot him an e-mail...

jrc

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post #3 of 3 (permalink) Old 01-29-2010, 01:32 PM Thread Starter
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Re: Constant downshift?

hopefully i will get off a bit early so i have some time to do that.

early 99 F350 Supercab longbed 4x4, Diprical gauges,GTP38R, Swamps competion fuel system with bowl delete,custom intake, 4in downpipe to 6in stacks, 200/30% hybrids from swamps, tuned by swamps, head studs.main studs, WOP cryo forged rods, ceramic coated pistons,Adrenalin HPOP,DI cam. Train horns, Ranchand front bumper DMI rear, Kumho kl71
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