Sluggish Tranny - PowerStrokeNation : Ford Powerstroke Diesel Forum
 
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post #1 of 6 (permalink) Old 07-15-2009, 02:40 PM Thread Starter
DILLIGAF
 
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Sluggish Tranny

My tranny on my 99 F350 is feeling kinda sluggish. If i drive it normal it seems to do ok but if I hammer down on it, it acts like it cant keep up with my engine. That is from the stock setting to the 100hp setting. Now when i put it into the 140 setting it shifts very hard and very quickly as if i had a shift kit in it. Ive had friends tell me that this was normal for the year and that i should put a addtive in the trans, but i thought i would ask the gods of powerstrokes first!! Any ideas?
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post #2 of 6 (permalink) Old 07-15-2009, 06:15 PM
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Re: Sluggish Tranny

Can you elaborate more on what you mean by "cant keep up with the engine"?
the firm shifts in the extreme tunes are a result of increased line pressure, which is a similar effect to a shift kit.

Dan
96 Powerstroke: 6637, downpipe to dump exhaust, 140v IDM and a shift kit.

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post #3 of 6 (permalink) Old 07-15-2009, 07:18 PM
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Re: Sluggish Tranny

Need to adjust line pressures. Also, a John Wood or BTS VB will help.

DO NOT USE ADDITIVES.

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post #4 of 6 (permalink) Old 07-16-2009, 08:37 PM Thread Starter
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Re: Sluggish Tranny

What i mean about the engine cant keep up is that it will stay at the redline for a couple seconds before ti shifts instead of throwing itself into a better gear.. Just doesnt seen like it shifts fast enough.. thanks for the info!!
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post #5 of 6 (permalink) Old 07-16-2009, 08:48 PM
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Re: Sluggish Tranny

Quote:
Originally Posted by SmokeMakesMeHorny View Post
What i mean about the engine cant keep up is that it will stay at the redline for a couple seconds before ti shifts instead of throwing itself into a better gear.. Just doesnt seen like it shifts fast enough.. thanks for the info!!
shift points and line pressure need to be adjusted.

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post #6 of 6 (permalink) Old 07-19-2009, 06:53 PM
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Re: Sluggish Tranny

A JW valve body and a DPtuner will cure thos issues

Glen
early99 f350 cc, lb, 2wd, drw, A pillar autometer guages, CTS monitor, AIS intake, 4" turbo back cat delete diamondeye exhaust, dptuner, pmt1, jw vb, Swamps ab inj, Adrenaline oil, Coolingmist, 180*T, Trucool cooler, spin on trans filter, Firestone air bags, 2" frt leveling kit, now chased by a 34' toyhauler
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