Help!! Hard Shifting / Speedometer Jumping

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Sep 21, 2007 | 01:18 AM

#16

dirtleg

Mountain Pass

Joined: Nov 2005

Posts: 164

Likes: 2

From: Cloverdale VA

If your TPS (potentiometer on drivers side of IP) is too advanced it will cause your transmission to hold on to the lower gears longer. It is telling your transmission controller how much throttle is being used.

If after fixing your speedo drive gear you are still having shifting issues I would look there.

Sep 28, 2007 | 12:07 PM

#17

rcrane511

Thread Starter

New User

Joined: Mar 2007

Posts: 13

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That did it, thanks everybody for your help. I really appreciate it.

Thanks,

Rob

Sep 28, 2007 | 01:41 PM

#18

David85

Lead Driver

Joined: Nov 2003

Posts: 6,900

Likes: 3

From: Campbell River, B.C.

Quote:

Originally Posted by rcrane511

That did it, thanks everybody for your help. I really appreciate it.

Thanks,

Rob

So is it working now?

Sep 28, 2007 | 02:25 PM

#19

rcrane511

Thread Starter

New User

Joined: Mar 2007

Posts: 13

Likes: 0

Yup, works like new!!! Thanks Dave for all your help

Nov 30, 2007 | 08:10 PM

#20

Purcell McCue

New User

Joined: Jan 2007

Posts: 20

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I'm having the exact same problem, speedo is jumping, shifting erratic. I have replaced the speedo cable and the vss, gear is pink and does not appear to be worn. Is the gear (drive) in the transfer case plastic also, or is the drive gear metal? If it is plastic I will get both the drive and driven gear before taking the transfer case open. I have not replaced the sensor on the rear diff should I do this first as it is easier to access.

Tks

Nov 30, 2007 | 09:03 PM

#21

David85

Lead Driver

Joined: Nov 2003

Posts: 6,900

Likes: 3

From: Campbell River, B.C.

Quote:

Originally Posted by Purcell McCue

If you have a cable, then the sensor on the diffy will not affect the tranny (its used exclusively for the abs on those years of trucks). Yes, the drive gear as well as driven gears are both plastic, and fairly cheap to replace.

Dec 1, 2007 | 06:48 AM

#22

Purcell McCue

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Joined: Jan 2007

Posts: 20

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Many thanks for the information, I will get both plastic gears this week and install, will let you know how it goes.

Dec 21, 2007 | 12:38 PM

#23

Purcell McCue

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Joined: Jan 2007

Posts: 20

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Got the gears and replaced them today, fixed all problems with shifting and speedometer jump. Many thanks for all the help I have recieved here. Hope this thread helps you as much. Merry Christmas to all