Transmission hard shifting
Thread Starter
|
New User
Joined: Oct 2005
Posts: 1
Likes: 0
Transmission hard shifting
My 01 F250 V10 has suddenly started hard shifting and sometimes taking the RPMs up over 4k when it shifts then drops them back to around 2-3k where it normally drives at.
I have also noticed the OD on/off light flashes when this hard shifting occurs and the only way to stop it from flashing is to stop the truck and turn the key off then start it back up.
The truck hasn't hauled anything in months and only has 30k on it. It is a 4wd superduty. The transmission fluid looks clean and is at the right level.
Any help would be appreciated.
Mike
I have also noticed the OD on/off light flashes when this hard shifting occurs and the only way to stop it from flashing is to stop the truck and turn the key off then start it back up.
The truck hasn't hauled anything in months and only has 30k on it. It is a 4wd superduty. The transmission fluid looks clean and is at the right level.
Any help would be appreciated.
Mike
Posting Guru
Joined: Jul 2003
Posts: 2,210
Likes: 2
The flashing OD light means a trouble code was stored in the computer's memory. Take it to someone that can read Ford specific codes. A place like Autozone can't read Ford specific codes, only the codes that turn on the check engine light.
FTE Leadership Emeritus
Joined: Jan 2003
Posts: 161,999
Likes: 75
From: 3rd Rock
Originally Posted by mikew72
My 01 F250 V10 has suddenly started hard shifting and sometimes taking the RPMs up over 4k when it shifts then drops them back to around 2-3k where it normally drives at.
I have also noticed the OD on/off light flashes when this hard shifting occurs and the only way to stop it from flashing is to stop the truck and turn the key off then start it back up.
The truck hasn't hauled anything in months and only has 30k on it. It is a 4wd superduty. The transmission fluid looks clean and is at the right level.
Any help would be appreciated.
Mike
I have also noticed the OD on/off light flashes when this hard shifting occurs and the only way to stop it from flashing is to stop the truck and turn the key off then start it back up.
The truck hasn't hauled anything in months and only has 30k on it. It is a 4wd superduty. The transmission fluid looks clean and is at the right level.
Any help would be appreciated.
Mike
We are happy you have chosen the best source for Fords!
Enjoy FTE....and
JOIN CLUB FTE -SUPPORT THE FORUMS!
…..See you on the boards.
Senior User
Joined: Oct 2004
Posts: 149
Likes: 0
From: Lowell, MA
I had a similar problem. I disconnected my battery for a few minutes to reset the brain box. When I reconnected it the problem was gone! It has been more than a year. I have since put a code reader to it and I get a "pending fault" for my MAF sensor. I guess I can rationalize that the transmission uses data from the MAF sensor when determining shift points...Whatever....no check engine light, no tranny light....no problems
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
Likes: 423
From: Long Island USA
Yup, it definitely takes input from the MAF - I recently cleaned mine in my '01 V10, and the tranny now shifts like it did brand new - it was getting a little strange, slipping gears and such, now it's fine.
Thread
Thread Starter
Forum
Replies
Last Post
dieselsubmariner
1994.5 - 1997 7.3L Power Stroke Diesel
6
Feb 15, 2015 10:05 AM
12valveEx
Excursion - King of SUVs
48
Nov 3, 2014 12:16 PM
carsrus
1983 - 2012 Ranger & B-Series
8
Nov 18, 2009 05:34 PM
