Help finding post on O/D switch reversed

[BGDUMMY]

Can't find a post that I saw awhile back about possibly having the O/D switch reversed, so it stays off until you want to press to go into O/D.

Can anyone tell me how to accomplish this or help locate the post.

Thanks for any help!!!!!

 

[Cooker]

I don't remember reading a post about this, but I'd be interested also. Maybe I'll have to look at the manual to see if it can be done wihtout too much effort.



-Ryan

 

[illflem]

I remember the thread, it seems like the consensus was that it would involve more than just changing the switch, it would actually be pretty involved.

 

[BGDUMMY]

Thanks illflem,

I just could not remember what came of the result.

I am just getting tired (takes alot of effort you know. LOL) of turning switch on every time I get into the truck.

Oh well.

 

[Kodiak]

Check this out:



http://www.intermotive.net/



They have a box that does what you want. They also have a product that will hold the overdrive out until a pre-set speed and then keep in in OD until speed reduces to around 30 mph.



I got the PCM reflash done at the dealer which holds OD off until 52 mph. I'm real happy with this solution.

 

[Evan A. Beck]

It's a VERY easy thing to do... I came up with this one night, and was surprised hwo simple it is. All you need is a regular accessory relay and some wire.



But first, some info on how the OD switch works. TO turn OD on or off, it requires a pulse of ground, which is what the OD switch does. It is a momentary-contact typw switch, and when you press it, it gives ground to the PCM telling it to turn OD on or off.



***FYI, the Ford E4OD and 4R100 work the same way, but just use 12V+ to the PCM instead of ground.



So basically, all you gotta do is give the PCM a ground pulse when you start the truck. Simple...



Standard relay terminals are:



85: Coil 12V+

86: Coil ground

87: Normally open

87A: Normally closed

30: Common feed



Have the relay coil (85) triggered by the starter relay wire, which is dark blue with a yellow tracer, and it can be found in the steering column wiring harness. Connect ground to 86. Connect ground to 30, as this will be the ground feed for the pulse to the PCM. Connect a wire from 87 to the OD wire, which is orange with a white tracer.



So now that it's all connected, here's how it'll work:



When you turn the key to the START position, it will trigger the coil in the relay, and give gound to the OD switch wire going to the PCM, thereby locking out OD, until the button is pushed. Basically, it would be like holding the OD button down while you start the truck.



It works. Try it.

 

[Josparkz]

Evan, (the young genius ) sounds like he figured this one out.

I used to be on some listserve where they talked about an od inverter. I don't remember where they got them, the price was something like $30. But Evan's method sounds like about $10 worth of parts, and the same installation proceedure.

 

[Evan A. Beck]

BOMBS AWAY!

 

[Cooker]

I don't have too much time to be a test subject right now , but if someone would please let me know if Evan's BOMB works I'd really apprecite it.



Thanks

Ryan

 

[BGDUMMY]

Sounds Kinda simple.

I'm a little challenged when it comes to electrical (and plumbing) stuff.

I'll have to give it a try when I get the "courage" up.

Thanks.

 

[Evan A. Beck]

When you connect to the OD wire (orange/white) be sure to center splice & solder it... Don't cut it, and don't use Scotch-Locks or any mechanical electrical fastener--they are just too unreliable.

 

[1lawnman]

BGDUMMY



I DONT KNOW HOW THE SWITCH IS IN A 96 BUT MY 92 I BOUGHT HAD THE SWITCH WIRED BACKWARDS AND IT WORKED FIND IT WAS OFF WHEN I STARTED THE TRUCK AND I COULD PUT IT IN OVERDRIVE WHEN I WANTED





1LAWNMAN

6 TRUCKS 1,5000,000 MILES