Problem with overdrive light blinking
Thread Starter
|
New User
Joined: May 2012
Posts: 22
Likes: 0
Problem with overdrive light blinking
My overdrive light has been blinking. I have scanned the codes and they are p0782 p0781 p0732 p1247. I was wondering if it will need a complete overhaul or if if the problem is something I can fix.
The truck is a 2002 F450 7.3 diesel with about 120k Miles.
Thanks I appreciate your help.
EDIT: the truck has been shifting hard from 1-2 2-3 it also only shifts when it gets near the red line at about 3800 rpm. I believe it does go into second. It might skip it though. When the transmission cools and i restart the truck the truck seems to run fine no hard shifting.
EDIT: ADDED CODE p1247 to code list.
The truck is a 2002 F450 7.3 diesel with about 120k Miles.
Thanks I appreciate your help.
EDIT: the truck has been shifting hard from 1-2 2-3 it also only shifts when it gets near the red line at about 3800 rpm. I believe it does go into second. It might skip it though. When the transmission cools and i restart the truck the truck seems to run fine no hard shifting.
EDIT: ADDED CODE p1247 to code list.
Lead Driver
Joined: Sep 2010
Posts: 7,793
Likes: 50
think this has something to do with wire shaffing, in the steering column. My buddy just replaced thee entire shift assy with oem (80 buks at dealer). His was popping the dash fuse. Removed the shifter assy and found wires freyed. I'm sure you can tape up the shaffing and be done with it.
Thread Starter
|
New User
Joined: May 2012
Posts: 22
Likes: 0
think this has something to do with wire shaffing, in the steering column. My buddy just replaced thee entire shift assy with oem (80 buks at dealer). His was popping the dash fuse. Removed the shifter assy and found wires freyed. I'm sure you can tape up the shaffing and be done with it.
Lead Driver
Joined: Sep 2010
Posts: 7,793
Likes: 50
if you got the manual, its in there, but no i dont, its a 10amp though, underthe dash, beleive it was the middle row, 2nd from the bottom fuse. The fuse controlled the dash cluster, (CA) GP relay module, and i want to say the TPS (throttle position sensor), since he had no response withthe bad fuse.
Thread Starter
|
New User
Joined: May 2012
Posts: 22
Likes: 0
if you got the manual, its in there, but no i dont, its a 10amp though, underthe dash, beleive it was the middle row, 2nd from the bottom fuse. The fuse controlled the dash cluster, (CA) GP relay module, and i want to say the TPS (throttle position sensor), since he had no response withthe bad fuse.
Thread Starter
|
New User
Joined: May 2012
Posts: 22
Likes: 0
I was thinking the VSS too, but mine reads the speed correctly. Or does it not matter? I might replace it because it is about 30$ to replace anyway.
Trending Topics
Thread Starter
|
New User
Joined: May 2012
Posts: 22
Likes: 0
I was wondering if you could help me locate the VSS. Where is it on the truck? Thanks.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
Thread Starter
|
New User
Joined: May 2012
Posts: 22
Likes: 0
Ok so It was not the chafing that caused the issue. Will try to replace the VSS sensor. It only seems to do it when it warms up so I don't really know what could be wrong. It won't shift into 2nd when it does this.
Thread Starter
|
New User
Joined: May 2012
Posts: 22
Likes: 0
I see two sensor types.
F85Z-2L373-AB - abs sensor which is on top of the differential
F810-7M101-AA - this is the transmission speed sensor which i think is located on the transmission
F85Z-2L373-AB - abs sensor which is on top of the differential
F810-7M101-AA - this is the transmission speed sensor which i think is located on the transmission
Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
TSS - Turbine Speed Sensor , OSS - Output Shaft Speed sensor.
With those P7XX codes I think you have more problems than a bad sensor.
Thread Starter
|
New User
Joined: May 2012
Posts: 22
Likes: 0
Replaced the VSS and the truck still seems to shift hard and the overdrive light started blinking after about 5 minutes of driving. DO i need to clear the codes off the PCM? or is it another problem?
Thread Starter
|
New User
Joined: May 2012
Posts: 22
Likes: 0
The trans fluid is red and smells like the new fluid reads at the appropriate level. No dirt in the trans fluid, but i have not removed the pan.