Dream Weaver
09-06-2006, 11:23 AM
Since I have had my Legnum I have had various issues with the transmission, sometimes I think more than my fair share !
Firstly the gearbox started to fail last year, the car would go but only just. The car went to Xtreme (well I was a Mitsubishi newbie !!!) and they had the gearbox sort of reconditioned by that place in Cannock.
Went OK for a couple of weeks until the transfer box went bang in a big way on the A5 in Anglesey, rear wheels locked up undriveable until RSE took the propshaft out so it at least could be moved. Even then it was not a happy bunny, and would just about move.
So it went off the road while I eventually sourced a 56,000 kilometre donor from Japan.
When the donor turned up the engine, gearbox, transfer box and back diff. Were swapped over and off I went.
However RSE had put normal ATF in the gearbox, so a quick flush was done with Amsoil and has since had a change of that for Amsoil again. At the same time I had an upgraded transmission oil cooler fitted.
However I have been having similar problems as described by Kalle elsewhere, the car seeming to get confused changing up when booting it a bit, usually between 2nd and 3rd with the engine revving happily but not much forward motion.
I had noticed something similar before my original gearbox started its sulks, in that the car would just not go any faster when attempting to accelerate, at the same time the “skidding car” traction control light would come on. This would last a few seconds and then it would go out and normal service was resumed.
The problem tends to happen when it’s a hot day, I am driving it a bit fast and the car is well warmed up.
It never seems to be a problem in Tiptronic mode.
This still happens so I guess if it is a fault, that the fault is not in the drivetrain but has been retained in the cars Tiptronic and/or traction control brain.
So I tried switching the traction control off. And none of the hesitation or odd lack of transmission that I had experienced, and the skidding car light stays off.
I am not sure if this will help Kalle but he might like to give it a try and let us know.
So it would appear to me that to achieve Legnum autobox heaven is to have Amosil in it (with full flush), an upgraded oil cooler and switch off the traction control. Annoyingly when you start the car it defaults to the “on” setting.
Obvious downside would be that you need to be aware that you are in a big heavy 260BHP car with no traction control. I find the car is a different beast without traction control.
So, my conclusions:
Use Amsoil !
Upgrade the oil cooler
Tiptronic mode and driving fast – keep traction control on.
Auto mode and feeling lazy or its raining – also keep traction control on
Auto mode and giving it some – switch off traction control.
I am still not sure this is a fault in the car, Mo had all the stuff left over from the donor, and so I don’t have a spare gearbox ECU to see if a swap cures this. Or maybe its just a minor flaw in the design of the car.
My feeling is that the power and the smart gearbox just sometimes combine to overwhelm the traction control sometimes.
Firstly the gearbox started to fail last year, the car would go but only just. The car went to Xtreme (well I was a Mitsubishi newbie !!!) and they had the gearbox sort of reconditioned by that place in Cannock.
Went OK for a couple of weeks until the transfer box went bang in a big way on the A5 in Anglesey, rear wheels locked up undriveable until RSE took the propshaft out so it at least could be moved. Even then it was not a happy bunny, and would just about move.
So it went off the road while I eventually sourced a 56,000 kilometre donor from Japan.
When the donor turned up the engine, gearbox, transfer box and back diff. Were swapped over and off I went.
However RSE had put normal ATF in the gearbox, so a quick flush was done with Amsoil and has since had a change of that for Amsoil again. At the same time I had an upgraded transmission oil cooler fitted.
However I have been having similar problems as described by Kalle elsewhere, the car seeming to get confused changing up when booting it a bit, usually between 2nd and 3rd with the engine revving happily but not much forward motion.
I had noticed something similar before my original gearbox started its sulks, in that the car would just not go any faster when attempting to accelerate, at the same time the “skidding car” traction control light would come on. This would last a few seconds and then it would go out and normal service was resumed.
The problem tends to happen when it’s a hot day, I am driving it a bit fast and the car is well warmed up.
It never seems to be a problem in Tiptronic mode.
This still happens so I guess if it is a fault, that the fault is not in the drivetrain but has been retained in the cars Tiptronic and/or traction control brain.
So I tried switching the traction control off. And none of the hesitation or odd lack of transmission that I had experienced, and the skidding car light stays off.
I am not sure if this will help Kalle but he might like to give it a try and let us know.
So it would appear to me that to achieve Legnum autobox heaven is to have Amosil in it (with full flush), an upgraded oil cooler and switch off the traction control. Annoyingly when you start the car it defaults to the “on” setting.
Obvious downside would be that you need to be aware that you are in a big heavy 260BHP car with no traction control. I find the car is a different beast without traction control.
So, my conclusions:
Use Amsoil !
Upgrade the oil cooler
Tiptronic mode and driving fast – keep traction control on.
Auto mode and feeling lazy or its raining – also keep traction control on
Auto mode and giving it some – switch off traction control.
I am still not sure this is a fault in the car, Mo had all the stuff left over from the donor, and so I don’t have a spare gearbox ECU to see if a swap cures this. Or maybe its just a minor flaw in the design of the car.
My feeling is that the power and the smart gearbox just sometimes combine to overwhelm the traction control sometimes.