F350 E40D shifting situation
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Elder User
Joined: Feb 2002
Posts: 586
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From: Covington usa
F350 E40D shifting situation
I had my tranny rebuilt and pressure plate replaced. However I notice when I drive on a highway between 40 and 60 the truck like to jump into a passing gear type deal. It's like I pressed down on the gas pedal to pass or something. If I take it out of OD it still does it, shop (what would you expect they would say) "oh we don't notice it", but it shifts up and down like it’s get a load or climbing but it's on a level road. Could it be some sort of sensor or vacuum? really has me purplexed...I only drive ity on the weekend but it drives me nuts!
It's the 93 F350 Turbo 4x4 diesel
It's the 93 F350 Turbo 4x4 diesel
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Elder User
Joined: Feb 2002
Posts: 586
Likes: 0
From: Covington usa
sorry not the pressure plate (the tranny was fixed it awhile ago) and she's been down for a steering box and now not under warrenty...it's the plate between the tranny and the fly wheel...mine was almost in peices..can't remember what it's called
Mountain Pass
Joined: Nov 2007
Posts: 192
Likes: 1
My first thought was the same as Topgunns. Have you checked the trans fluid level?
Mike
Post Fiend
Joined: May 2004
Posts: 11,289
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From: Lakewood, Ohio
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Junior User
Joined: Nov 2005
Posts: 78
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From: columbia river gorge
The E4OD has an overdrive by locking up the T/C. When you step down on the accelerator to pass, the T/C unlocks shifting down out of OVERDRIVE. If this is the problem then a lot of things can cause it as it is inter-connected with the cruise/brake system. If that is it,we can give you the good and bad news
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Cargo Master
Joined: Jan 2004
Posts: 2,512
Likes: 8
From: Cook Forest and Irwin PA
the e4Od does in fact have both 4 gears AND a lockup converter. it sounds like you are dropping into second. you need to have it hooked up to a tranny friendly scan tool like the modis to see if the shift was commanded via a bad TPS. If not, they might point to a shift solenoid leaking and hence shorting out.