- Joined
- Jun 26, 2002
- Location
- Apache Junction, AZ
Ok so I figured I would ask here before I dig to much into the car as I figure this is a fairly simple issue.
I picked up a 1991 745T (SE) that had been swapped from AW71 to m46. The OD worked the entire 200 mile back home. The car was wired in such a way that the dash light is always on and when you push the button for O/D the light goes off. I am 100% fine with this as it works, while it does allow you to use o/d in any gear that is not really the end of the world as this car just needs to pass emissions and be a backup car while I am working on other projects.
All of a sudden O/D has decided it wants to be a pain right when I go to emissions test the car.
In first gear I can push the button and the o/d light goes off most of the time, there are times I can push it and it will not go in or out of o/d even in first. All other gears the button does nothing. I removed the shifter and at first glance the wiring looks like typical m46 wiring.
So I am guessing that the wiring from the shifter to the relay has issues because of age of the wiring this is why only is first gear the button works? So besides removing the shifter and the button and testing that the button works every time I am guessing that I just need to pull a new set of wires though the shifter and see if that resolves the issue right away? Is there a switch on m46's that allow it to only go into o/d in 4th? I have a spare m46 on the side of the shop I can check for spare parts (3rd gear is trashed on this trans).
Also does anyone have any tips on where to get the small spade connectors for the o/d button?
Thank you for your time trying to read my rambling, I am just trying to get a better idea on what I need to look at before I start tearing into the car so if anyone has any other key places to look for an issue like this let me know. Otherwise I am just going to wire up a switch on the dash for o/d and enjoy watching the idiots at the emissions test place try to go in and out of 5th with a dash mounted switch.
I picked up a 1991 745T (SE) that had been swapped from AW71 to m46. The OD worked the entire 200 mile back home. The car was wired in such a way that the dash light is always on and when you push the button for O/D the light goes off. I am 100% fine with this as it works, while it does allow you to use o/d in any gear that is not really the end of the world as this car just needs to pass emissions and be a backup car while I am working on other projects.
All of a sudden O/D has decided it wants to be a pain right when I go to emissions test the car.
In first gear I can push the button and the o/d light goes off most of the time, there are times I can push it and it will not go in or out of o/d even in first. All other gears the button does nothing. I removed the shifter and at first glance the wiring looks like typical m46 wiring.
So I am guessing that the wiring from the shifter to the relay has issues because of age of the wiring this is why only is first gear the button works? So besides removing the shifter and the button and testing that the button works every time I am guessing that I just need to pull a new set of wires though the shifter and see if that resolves the issue right away? Is there a switch on m46's that allow it to only go into o/d in 4th? I have a spare m46 on the side of the shop I can check for spare parts (3rd gear is trashed on this trans).
Also does anyone have any tips on where to get the small spade connectors for the o/d button?
Thank you for your time trying to read my rambling, I am just trying to get a better idea on what I need to look at before I start tearing into the car so if anyone has any other key places to look for an issue like this let me know. Otherwise I am just going to wire up a switch on the dash for o/d and enjoy watching the idiots at the emissions test place try to go in and out of 5th with a dash mounted switch.