Blinking OD Light E40D
Thread Starter
|
Senior User
Joined: Jan 2011
Posts: 193
Likes: 0
Blinking OD Light E40D
Just recently I've been having an issue with my OD light blinking and throwing me out of OD when I'm cruising down the highway. When it does this and I come to a stop, its almost like it failed to downshift or the shift points are just all messed up... If you turn the key off and restart, everything is fine. And then today, when I was driving through town, the TC started slipping and I lost all power, but if I shifted into "2" manually, it would drive just fine. This case, there was no OD light blinking.
Has anyone ever heard of anything like this? I've had it scanned at the parts stores and they couldn't read any code. Does anyone suggest a scanner that can also read tranny codes? Any help would be appreciated. I'm leaning towards something electrical, but an not sure yet.
Thank you!
Has anyone ever heard of anything like this? I've had it scanned at the parts stores and they couldn't read any code. Does anyone suggest a scanner that can also read tranny codes? Any help would be appreciated. I'm leaning towards something electrical, but an not sure yet.
Thank you!
Hotshot
Joined: Oct 2003
Posts: 17,791
Likes: 98
From: Ashland City, TN
Is the speed gauge jumping around? If yes, might need to clean VSS on the rear differential or replace. It will cause this issue.
There is also a sensor on the trans that will cause this issue.
Codes will better tell you what is wrong though and is the best way to go if all possible.
There is also a sensor on the trans that will cause this issue.
Codes will better tell you what is wrong though and is the best way to go if all possible.
Hotshot
Joined: Aug 2006
Posts: 10,764
Likes: 39
Is the speed gauge jumping around? If yes, might need to clean VSS on the rear differential or replace. It will cause this issue.
There is also a sensor on the trans that will cause this issue.
Codes will better tell you what is wrong though and is the best way to go if all possible.
There is also a sensor on the trans that will cause this issue.
Codes will better tell you what is wrong though and is the best way to go if all possible.
This poster most likely has a wiring issue . Shutting off the key most likely doesn't clean the VSS temporarily
Trending Topics
Hotshot
Joined: Oct 2003
Posts: 17,791
Likes: 98
From: Ashland City, TN
I did specify "or" replace.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!
Joe Kucinski
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!
Michael S. Palmer
The Best F-150 Deal of Every Trim Level (XL through Raptor)
Joe Kucinski
Hotshot
Joined: Oct 2003
Posts: 17,791
Likes: 98
From: Ashland City, TN
Differentials dont have filters in them, they have galleys for the .... extra's to fall into. Sometimes they make it to a magnet and stick there.
But depending on how much you got in there, you're damn right, could be a far worse issue. I've found some sorta metal flake in the little galley on every rear end i've opened. Granted, you've worked on far more than me, but when i'm 15/15 on this. I just believe it at this point. But I"m talking a few little flakes, not more than that.
Thread
Thread Starter
Forum
Replies
Last Post
85F250Diesel
1994.5 - 1997 7.3L Power Stroke Diesel
1
Jul 26, 2017 06:44 AM
lance65
1987 - 1996 F150 & Larger F-Series Trucks
36
Jun 9, 2016 11:03 PM
E450 newbie
1999 - 2003 7.3L Power Stroke Diesel
2
Dec 18, 2015 05:40 PM
reitman
Explorer, Sport Trac, Mountaineer & Aviator
16
Sep 26, 2007 01:23 PM