Auto gearbox modification

[MattF]

Do I need to simplify it for you mate?

So... you press the switch, and a little man in the wire runs along to a chip (full of little men with calculators)...

Alright then matey, I'll rephrase. My alternate approach would make some of those 'peculiarities' you have noted nonexistent. Plus, you wouldn't need safety overrides, i.e: the brake light override. One approach may trash your box, one won't. Guess which?

[Apache]

OK Matt... as this project will potentially benefit lots of people on here, fancy fleshing out your approach with some diagrams? As I said, engineers tend to 'tunnel vision' on a single solution - your fresh eyes could improve things.









I doubt it, but you never know

[MattF]

OK Matt... as this project will potentially benefit lots of people on here, fancy fleshing out your approach with some diagrams? As I said, engineers tend to 'tunnel vision' on a single solution - your fresh eyes could improve things.

How does the existing system work?

I doubt it, but you never know

You're now owed one bitch slap and a whack with the 2"x4". Get some new rope on your scratching post, btw.

[That Ruddy Squirrel]

How does the existing system work?




You're now owed one bitch slap and a whack with the 2"x4". Get some new rope on your scratching post, btw.

ding ding - round 1, we want you to come out fighting - no scratching, hitting above the belt and no tickling

[MattF]

- no scratching, hitting below the belt and no tickling

That's just ruled all of Apache's tactics out then.

[Apache]

I was actually considering multiplying up the pulse frequency from the speed sensors (there's two of them both feed the ECU) and fooling the car into thinking its going faster than it really is - which is what you were vaguely alluding to - but that would then throw out the speedo too, and would only give you lock-up in OD.

Believe me, I'm not someone who looks for the hardest way of doing something, and the way I'm looking at is the simplest (foolproof) way of doing it that I can see.

Must sort out my scratching post, Vicki's sick of the damage to the furniture

[daithediver]

Hi Apache,been reading this thread with interest,just wodering if you have made any further progress.

[BUSHWHACKER]

You'll have to shout louder, he's probably drunk in TonyN's back yard.

[daithediver]

Planning to get in the same state myself in a bit,waiting for the missus to disappear into the bathroom before I open a bottle of cab sauv,you know it goes off if you don`t drink it all in one go.

[Apache]

Hi Apache,been reading this thread with interest,just wodering if you have made any further progress.

Haven't had much chance to do anything other than a manual lockup switch so far. Used it driving to Shrewsbury on Friday, and down to Tony's yesterday. The truck seems happy enough down to ~40mph in OD in traffic on A roads that varies between 40-60mph, and with OD off, it locks and runs at about 1500rpm at ~30mph in 3rd. Its comfortable there too, and pulls fairly strongly from that speed when you put you foot down.

I reckon fuel consumption is improved, especially on long 40-50mph runs locked up in OD.

[daithediver]

Looking forward to full write up perhaps with a couple of diagrams for us thickies who don`t understand the auto box too well.

[KERRSURF]

Ant further progress Andy?

[Apache]

Not yet. Kids are off school, and I've been busy with them, and off on hols tomorrow. I will post back when I get things moving again.

[MattF]

I was actually considering multiplying up the pulse frequency from the speed sensors (there's two of them both feed the ECU) and fooling the car into thinking its going faster than it really is - which is what you were vaguely alluding to - but that would then throw out the speedo too, and would only give you lock-up in OD.

Yup. I'd overlooked that 'nugget'.

[Blizzard]

Hello,

Sorry for not replying before.

I only know how the auto tranny works "phisically" but I cannot say anything more as I've never driven an auto Surf (And I'm swapping mine haha).

I readed in this thread that the stick can control 1st, 2nd, 3rd and no O/D. This is not true. You can drive the truck with only the stick but the shift is 1st, 3rd, O/D. This is like when the two shifting solenoids fail, the 2nd can't be selected as the solenoids 1 and 2 are ON-ON.

Have you thought about putting an standalone tranny computer as I'm doing? It's cheap and you can configure almost everything...

David