tranny shifting making rpm's jump around - PowerStrokeNation : Ford Powerstroke Diesel Forum
 
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post #1 of 4 (permalink) Old 09-08-2014, 01:40 PM Thread Starter
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tranny shifting making rpm's jump around

So I have a 2002 7.3.. 6 speed and the last couple days its been acting weird when going through the gears with my foot into it.. 1st time was when I was pulling a pretty steep hill.. I had a good run at the hill and all that to make sure I didn't need to downshift back to 4th..anyways, half way up the rpm's jumped to 2500 then dropped to 1800, lost the power and had to shift back down... What is weird is the same surge of power around that rpm range was still there... Until the rpms dropped. Second time happened this morning on my way to work, getting on the freeway, shifting from 3rd to 4th... Right around 2000 is when the turbo starts to whistle.. Its almost like when you are still giving it throttle before the clutch is all the way out.. I have a ceramic disc clutch , and its never slipped before.. What does ring a bell is the 3 hours of stop and go traffic Friday and its just cleaning itself out?? Idk but any input would be great!!
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post #2 of 4 (permalink) Old 09-08-2014, 03:02 PM
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Re: tranny shifting making rpm's jump around

If the RPMs jump the clutch is slipping. There is no other possibility.

Mark
Former Ford Automatic Transmission Engineer

ďThe good thing about science is that it's true whether or not you believe in it.Ē ― Neil deGrasse Tyson
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post #3 of 4 (permalink) Old 09-08-2014, 10:25 PM Thread Starter
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Re: tranny shifting making rpm's jump around

That's what my initial thought was... Another 1500 bucks for a clutch haha
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post #4 of 4 (permalink) Old 09-09-2014, 01:10 AM
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Re: tranny shifting making rpm's jump around

Sucks

2000 F350 CCLB 4x4 7.3L, 4R100, 6637, 4" MBRP turbo back
2000 F250 Red 4x4 Ext. Cab, 7.3L DI, ZF-6
2005 Ranger Dark Gray, FX4, 4 dr, 4.0 SOHC, 5r55e
2015 Ford Transit 3500, Dark Gray, HR EX, 3.5L ecoboost, 6 speed select shift
2011 Edge Limited Black, 3.5L
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