Torque Convertor lock up instal

[Davis Dieso Junior Member Find all posts View Profile Close Davis Dieso]

That is correct MRW82, however, it is possible to shift from N to D and N to R without putting foot on brake. Should you accidently/unnkowingly lockup the convertor (while in N) and then shift into R or D it might not be a good look, if you know what I mean?? It may not be necessary to have the P lockout but I included it anyway just incase the brake cancel didn't work.
Yes it is damn good, considering it can be done for $20.00 and whole lot of time mucking about to do the job, but WELL worth it, believe me. I think towing will be better still, it should just show up the shortfall of the convertor even more. As you say, the benefit of a manual in an auto.
Cheers, Jamie

[MRW82 Member Find all posts View Profile Close MRW82]

Right you are, I knew you can shift from D to N without the brake but thought there was an interlock from N to D, but there's not. So the relay IS necessarythanks.

[fridayman Senior Member Find all posts View Profile Close fridayman]

This is great and what I have been looking for.

I'm keen to give it a go - just haven't had time to look into it yet. Hopefully I can adapt your design to suit the 90 series. How have you found yours now you have had it in for a while DD?

Cheers Ben.

I would love to try this on my 90 as well, but not sure if I know enough about wiring to give it a go... I might need to bribe my brother who understands electricals.

[Davis Dieso Junior Member Find all posts View Profile Close Davis Dieso]

Right you are, I knew you can shift from D to N without the brake but thought there was an interlock from N to D, but there's not. So the relay IS necessarythanks.

Yeah its one of those things that may not happen but don't want to know about it if it does??? Did I mention I get 0.5lt/100km better economy too?? J

[Davis Dieso Junior Member Find all posts View Profile Close Davis Dieso]

This is great and what I have been looking for.



I would love to try this on my 90 as well, but not sure if I know enough about wiring to give it a go... I might need to bribe my brother who understands electricals.

I've had a bit of a look at the 90 wiring diagram and I can't see any reason why it can't be done on it either..
Suggest you get someone who's clued up on electrical though as it may get too daunting... J

[barcode Junior Member Find all posts View Profile Close barcode]

does this also work on the v6 and have the same benifits. if so where is it a benifit and are there any drawbacks for use by the average jo daily driver?
sorry but just trying to understand the concept of this still

[MRW82 Member Find all posts View Profile Close MRW82]

One example, I was towing a car trailer (with a suzuki Sierra on it) and found the torque converter wasn't locked the majority of the time, unless I kept the speed above 105. Revs were around 2200rpm at 100, instead of sitting just under 2000. still drove great, towed great, but trying to take it easy towing was actually harder on the transmission. I Don't like the idea of locking it into 4th, revs jump by 500 rpm

The Diesel engine is a torquey little bugger from right down low, there is no need for torque converter slip in those conditions, the engine can handle it easy. If I could manually select to lock it, problem solved. Not sure where the petrol makes it's peak power, but I think it would benefit in the same conditions.

The other advantage would be 4wd downhill descents, low range, 1st gear, torque converter locked would give great crawl control. But the brake pedal lockout could be an issue. James would it be possible to incorporate a low range lockout of the brake pedal disengage relay (or an over ride of some sort)?

[Davis Dieso Junior Member Find all posts View Profile Close Davis Dieso]

does this also work on the v6 and have the same benifits. if so where is it a benifit and are there any drawbacks for use by the average jo daily driver?
sorry but just trying to understand the concept of this still

This would work with the V6 Barcode, similar result but different. The petrol produces its torque higher in the rev's than the diesel (low RPM torque). For just day to day commuting/around town etc, probably not worth the hassle as the petrol needs to rev anyway, in saying that, if you wanted to be on the button (lock up) all the time some small benefit could result. If you were hauling a tradie trailer around most of the time or towing a caravan, then far more benefit could be had. It just allows the engine to push the car along like a manual instead of it revving higher (than need be). Toyota seem to like there engines revving high instead of being able to stick your foot into it without it kicking back. In the good 'ol days of auto's, you had to plant your foot to the floor to kick them back. The prado changes back to 3rd and unlocks the convertor at the same time, giving the effect of changing back two gears. With the lock up switch, it only kicks back to 3rd and powers on (same as 2nd).
Hope this helps. Cheers Jamie

[Davis Dieso Junior Member Find all posts View Profile Close Davis Dieso]

One example, I was towing a car trailer (with a suzuki Sierra on it) and found the torque converter wasn't locked the majority of the time, unless I kept the speed above 105. Revs were around 2200rpm at 100, instead of sitting just under 2000. still drove great, towed great, but trying to take it easy towing was actually harder on the transmission. I Don't like the idea of locking it into 4th, revs jump by 500 rpm

The Diesel engine is a torquey little bugger from right down low, there is no need for torque converter slip in those conditions, the engine can handle it easy. If I could manually select to lock it, problem solved. Not sure where the petrol makes it's peak power, but I think it would benefit in the same conditions.

The other advantage would be 4wd downhill descents, low range, 1st gear, torque converter locked would give great crawl control. But the brake pedal lockout could be an issue. James would it be possible to incorporate a low range lockout of the brake pedal disengage relay (or an over ride of some sort)?

Spot on MRW82. I'll investigate the low range 1st scenario and let you know what I find. The convertor won't lock in 1st high. Something to do with the valve body I prosume. "Wholesale Automatic Transmissions" in VIC do a different valve body that overcomes that problem (and fixes other ones too).
Yes it would be possible to have a low range (no brake cut out) relay added to stop cancellation. I can provide more detail if you require on this one.
Cheers, Jamie

[no-grey nomad Junior Member Find all posts View Profile Close no-grey nomad]

Anyone got a copy of this diagram? The link from the OP is broken 404 error. I emailed him but not sure how often Jamie is around to reply so thought I'd check with you good folk.

Cheers.

[macaroon1 Advanced Member Find all posts View Profile Close macaroon1]

Works fine for me still. Follow the instructions again and see how you go.

[no-grey nomad Junior Member Find all posts View Profile Close no-grey nomad]

Alright I got it working after 3 different devices and 2 different Web browsers! One question, using a momentary push switch, will triggering the brakes physically pop the switch back out or will you have to manually press the switch off and on again to reset? This is the only thing I'm concerned about with this unit. Cheers
Dan.

[Davis Dieso Junior Member Find all posts View Profile Close Davis Dieso]

No Dan, the momentary on switch only activates the "hold in relay" which in effect acts like keeping it switched on. It stays that way until you touch the brake pedal to de-activate it.
So to activate the "lock up", just press the switch once, its now locked up. Thats it, touch the brake pedal to release, done.
If you wanted you could have an ON/OFF switch, switch it on/off yourself. I wouldn't go this way myself. Its a natural reaction to use the brake pedal. After using it for a while now, my experience shows what I have works brilliantly.
Cheers, Jamie

[Foxo Junior Member Find all posts View Profile Close Foxo]

Hi Davis Dieso,

I've got a 2003 1KZ-TE auto and I would like to try and fit your lock-up set up but I can't download your info sheet. rapidshare is just dormant. Is there any other way you could post the info, both my computer and I are pretty slow at this business.

Hope you can help,
Thanks,
Foxo.

[no-grey nomad Junior Member Find all posts View Profile Close no-grey nomad]

I have wired up all my solenoids and are clicking in and out at the right times, however my ECU looks a little different to yours, I have no pink cable with white tracer on the 3rd group of plugs. Same year prado but GXL. I couldn't imagine the wiring colours would be different? Does anyone know of an ECU wiring diagram I can borrow to find the correct cable?

Cheers
Dan.