I've been having problems with this light flashing ever since I got the truck. It's a 92 F-350 4x4
It's been kind of slightly lunging into gear. Not always and not very noticeable.
Then at random it will start throwing codes and flashing the O/D light and go to safe mode and kick me in the pants every time it shifts.
It sometimes goes a month without doing it, then it will do it every day for a week and a half. I usually just disconnect the batts and let it sit. Goes away for a while.
The fluid looks and smells kind of toasty but I have a pile of paperwork I got with the truck for a full tranny and T-Case rebuild 4k before I bought it and I may have put 8k on it. The fluid looks the same now as the day I bought it. And I do plan to change it when it warms up a little.
I replaced the FIPL switch soon after getting the truck.
A few weeks ago I went through and cleaned all the connectors and put dielectric grease on them. When I pulled the connector on the passenger side of the trans it was covered in trans fluid. Don't know why. Couldn't get my head in there to see. I figure it goes to the solenoid block and that is messed up.
Later I relaced the MLPS and adjusted it right (about a week and ahalf ago).
I hooked up the self tester today and got back three codes on the KOEO
1. 19 Failure in ECA (electronic control assy)- Problems with internal voltage regulator
2. 29 VSS
Signal too low (replaced this and the connector months ago)
3. 49 Transaxle problem 1-2 Shift Error
It makes no sense to me why it does this. When it went off today Iw as just cruisin down the street and put a little throttle to it to go around someone and it shifted out of overdive to go then when I let off it slammed back into overdrive and the o/d light started flashing and it went to safe mode.
It also seems to do it more whan I am driving it like a granny. If I am a littel harder on it I usually don't see as many problems out of it.
The only other time the light comes on is occasionally I'll be leaving out of my yard trying to take it easy so I don't spin the tires and it will start to flash, then when I get out of the driveway I just blp the throttle and it stops (I'm guessing this is the 1-2 shift problem.
I have also reprogrammed the PSOM with the correct constant for my tires.
Any suggestions will be appreciated. Thanks.