Overdive Shifting Problem
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Junior Member
Joined: Jun 2001
Posts: 7
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From: Miami, FL, USA
Overdive Shifting Problem
At about 50-60 mph my truck shifts constantly from 3rd gear to overdrive.. like if i step on the pedal it will downshift from OD to 3rd.. and after a minute it will shift back up to OD.. Whats up with that? Is that just something it does? Or is it a mechanical problem? ANyone have this problem before??
Senior Member
Joined: Nov 2000
Posts: 2,444
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From: DFW, Texas
What you're probably feeling is the TC unlocking and locking. It's kind of annoying. When you let off, it unlocks and coasts and when you step back on it even ever so slightly, it locks back up again.
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2000 EDDIE BAUER EXPEDITION 4x2
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Senior Member
Joined: Nov 2000
Posts: 2,444
Likes: 0
From: DFW, Texas
That's what it feels like. When you step one it it feels like a shift. The TC feels like that. Before it drops to 3rd from OD the TC unlocks. Unless you nail it then it not only unlocks but drops into 3rd. If it's doing that it would feel like it drops and the up shifts 2 times.
You can probably duplicate the feel if you turn OD off and cruise in 3rd at a much lower speed. That is I think. I've got an Expy with the 4R100 so it may be slightly different.
There are other posts that talk about the same thing. I'd say I'm 90% sure it's the TC. But there's always that 10%
Here's one old post. There's a newer one but my eyes are about to shut as I fall asleep.
https://www.f150online.com/f150board...ML/000119.html
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2000 EDDIE BAUER EXPEDITION 4x2
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[This message has been edited by FamilyRide (edited 07-01-2001).]
You can probably duplicate the feel if you turn OD off and cruise in 3rd at a much lower speed. That is I think. I've got an Expy with the 4R100 so it may be slightly different.
There are other posts that talk about the same thing. I'd say I'm 90% sure it's the TC. But there's always that 10%
Here's one old post. There's a newer one but my eyes are about to shut as I fall asleep.
https://www.f150online.com/f150board...ML/000119.html
------------------
2000 EDDIE BAUER EXPEDITION 4x2
- Estate Green
- 5.4 ltr
- 3:55 LS rear
- Superchip!
- Airaid FIPK
- Gibson S/S Swept Side Cat Back Exhaust
- Hellwig Rear Anti-Sway Bar
- Energy Suspension Polyurethane Front Anti-Sway Bar Bushings
- Edelbrock Performer IAS Shocks
- Mobil 1
- Xenon Super White Head and Driving Lights
- Tow Package
- Rear Load Leveling
- Moonroof
- Century Child Seat!
-->Follow Me...<--
[This message has been edited by FamilyRide (edited 07-01-2001).]