Manual control of Auto box. Is it possible?

[Nicc]

Using the information in this link;

http://www.autoshop101.com/forms/h16.pdf

Anyone out there think it may be possible that some elecronic item/ gadget could be placed to feed the gear change solenoids so that the auto box could be configured to operate by an up and down button (not sure where to fit)

This would then give manual control of the gear changes and their timing.

From reading the link provided I gather that the gear position is basically a combination of two solenoids. See page 15 of linked pdf, 1st column.
Third solenoid is lock up
Fourth solenoid is 4WD

I reckon some digital bit and a few relays, need guidance and probable part list.

There's a challenge for all you sparkies out there!

[The Lovely Boyo]

Why would you want to do this?

Pull the stick back and you can control it manually anyway.

What's on your mind

[surfenstein]

Using the information in this link;

http://www.autoshop101.com/forms/h16.pdf

Anyone out there think it may be possible that some elecronic item/ gadget could be placed to feed the gear change solenoids so that the auto box could be configured to operate by an up and down button (not sure where to fit)

This would then give manual control of the gear changes and their timing.

From reading the link provided I gather that the gear position is basically a combination of two solenoids. See page 15 of linked pdf, 1st column.
Third solenoid is lock up
Fourth solenoid is 4WD

I reckon some digital bit and a few relays, need guidance and probable part list.

There's a challenge for all you sparkies out there!

buy a quick shift mechanism and modify it to fit like i have.

[BUSHWHACKER]

Why would you want to do this?

Pull the stick back and you can control it manually anyway.

What's on your mind

Santapod?

[TonyN]

buy a quick shift mechanism and modify it to fit like i have.

My old Rover had a quick shift, and manual valve body.

Was fun.

[surfenstein]

My old Rover had a quick shift, and manual valve body.

Was fun.

nearly as much fun as a manual box with clutch.but more awsome gear changes.

[Nicc]

Sequential shift

1)Whats a quick shift then?

2)The reason for wanting to do this is so that at lower and slower speeds I can choose which gear to be in rather than leaving it to the ECU which requires that top gear is only selected at 65 kph ish.
Lanes driving means I am seldom in the higher gear that I would have selected if I were in a manual. I want to trundle under light throttle like I would if I were in a manual.
It may be possible to make a sequential shift gearbox using up and down buttons, but also have a switch that can be used to switch back to conventional auto for when the girlfiend / others drive.

Your thoughts surfers.

[TonyN]

Your thoughts surfers.

To be brutally honest, I'd say its not worth the effort, I can't see how you'd gain that much.

A motor that is lugging in to high a gear is no more economical than reving to high as you'll be squeasing the throttle more waiting for it to pickup.

The whole point of how the gearbox is set up is to keep the motor running at the most efficent RPM, that why you have the ECT button, if you want to go faster it lets you rev higher before changing gear.

Swap your truck for a manual one, or start learning how to build and program new ECU!

[Gamedawn]

I've no idea where the link has gone but there was someone in the US selling a box that plugged into the ecu and gave full manual control of a Toy auto box. I think the idea was to give better control for rock crawling or something but considering how good the auto box is it does seem like a bit of overkill

[Apache]

I think I know where this guy is coming from. Remember my thread on forcing lock up to stay in down to lower revs for cruising at steady speeds lower than where lock up drops out?

On another slightly connected subject, could the quality of your ATF (ie, if it's knackered) affect the speed at which lock up occurs? Logic says to me that it could.

[Nicc]

Might go on net and have a look for that box Gamedawn.

WRT selling for a manual: I like my truck and having replaced the head and rad on it would be loathe to risk the same.
Bruised a few knuckles doing it, learnt a lot.:
Works well now though, Cubic metre of concrete on trailer, approx 3 tonne all up & no temp movement. This surf is staying!
I suppose being partial control freak I want the TX to move when I want, not when it wants!!
Thanks for responses though guys.

Apache - Must admit haven't changed the TX fluid, (another job to do!) still want the control though!

[Gamedawn]

Just found it http://www.awshifting.com/

[Nicc]

Thanks Gamedawn

Gamedawn - you are a star indeed.

With the current exchange rate this could be what is going to occur in my truck!

I am now perusing your link!

To any that are interested in this, as I am, this link gives some FAQ's WRT manually controlling an auto box:
http://awshifting.com/faq.htm

[Phaeton]

I like the idea of this product as mine doesn't normally go into 'lock-up' until around 52mph & then drops out at 50mph, there is no reason this could not go down to 45mph.

On another note I have noticed that 'lock-up' takes up to 55mph when engine/gearbox is cold.

Alan...

[WARRIOR72]

ive got a trans x automatic gearbox computer that i wired in to the box to check it was shifting /downshifting. i could get all gears ok manually by selecting the buttons1-4 and shifted up or down by pressing the arrow keys on the keypad.....so you must be able to somehow (mind you i used this device about four times and it cost me £600 eight years ago )