The Automatic Transmission - talk shit thread

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Re: The Automatic Transmission - talk shit thread

Postby rsv4dan on Sun Dec 13, 2015 7:22 am

Im assuming the 5 speed in my MQ isn't too dissimilar to the MN. I'm noticing it's reluctance to lock up. It doesn't lock up at all in 1st, 2nd, 3rd and will only lock up in 4th from 65kph+ and 5th at about 95kph. Much more than a slow and steady application of the throttle to about ~25% will see it unlocking and the revs shooting up 500-1000rpm. Once locked, letting the RPM get down to about 1600-1650 will also see the converter unlock.

Fitting an aftermarket valve body will help with providing more pressures to the clutches etc but i cant see it doing absolutely anything to influence lock up as this is electronically controlled. Now it must be possible to tune the transmission ecu? If ECUtek, AVA etc can tune the engine ecu, then surely it's possible to flash the transmission ecu? Would only need to change the lock-up parameters/map tables to suit - i really cant imagine it being too hard, ie - allow converter lock in more gears, at lower wheel speeds/engine rpm and also under higher loads.

Anyone can offer any input? I hate how much the revs just flare up in my MQ with a modest tap of the accelerator seeing a jump of 1000rpm. It's in efficient and just wastes torque/fuel. Not to mention that instead of utilizing all that low down torque the revs just spike past it when you floor it anyhow!
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Re: The Automatic Transmission - talk shit thread

Postby coughy on Sun Dec 13, 2015 7:28 am

you are correct it is the auto ecu doing it
the v6 pajero has the same box same diff ratios as my challenger but the pajero locks up in 3 ,4 ,5 with the same box so yes it is a tuning issue
i dont know anyone that can talk to the auto ecu to see if they can change it...
im looking into maybe a auto ecu swap out if the wiring diagrams match up
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Re: The Automatic Transmission - talk shit thread

Postby Longranger1 on Sun Dec 13, 2015 2:25 pm

I suspect the lock up clutch is a bit limited in how much torque it can handle. They aren't that robust.
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Re: The Automatic Transmission - talk shit thread

Postby snowman on Sun Dec 13, 2015 2:56 pm

Longranger1 wrote:I suspect the lock up clutch is a bit limited in how much torque it can handle. They aren't that robust.



oh you'd be surprised. enough to blow up second gear i can give you the tip.
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Re: The Automatic Transmission - talk shit thread

Postby Longranger1 on Sun Dec 13, 2015 7:34 pm

snowman wrote:
Longranger1 wrote:I suspect the lock up clutch is a bit limited in how much torque it can handle. They aren't that robust.



oh you'd be surprised. enough to blow up second gear i can give you the tip.


How did you manage that? You must have given it some jandal :lol: .
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Re: The Automatic Transmission - talk shit thread

Postby Jrosey on Mon Feb 15, 2016 6:55 pm

coughy wrote:you are correct it is the auto ecu doing it
the v6 pajero has the same box same diff ratios as my challenger but the pajero locks up in 3 ,4 ,5 with the same box so yes it is a tuning issue
i dont know anyone that can talk to the auto ecu to see if they can change it...
im looking into maybe a auto ecu swap out if the wiring diagrams match up

Hey Coughy
Just wondering if you had any luck chasing up the ability to retune the transmission controller or if there was some replacement to swap from something else. My 2015 MN auto is woeful and the stealer says there is nothing wrong and they can't reflash it to provide a better lock up system.
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Re: The Automatic Transmission - talk shit thread

Postby coughy on Mon Feb 15, 2016 8:53 pm

no not at the moment there are smarter people than me looking in to this on a nother forum so just have to wait to see if they crack it or not will take some time
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Re: The Automatic Transmission - talk shit thread

Postby Jrosey on Thu Mar 10, 2016 5:27 pm

Quick question, is anybody using the Wholesale transmissions Gen 2 torque lock up controller with PWM. Supposedly this doesn't fry the solenoid . Any problems with this set up if it used the right way ie 4th and 5th and towing etc.
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Re: The Automatic Transmission - talk shit thread

Postby snowman on Thu Mar 10, 2016 5:37 pm

Jrosey wrote:Quick question, is anybody using the Wholesale transmissions Gen 2 torque lock up controller with PWM. Supposedly this doesn't fry the solenoid . Any problems with this set up if it used the right way ie 4th and 5th and towing etc.


I had the Mk1 that did blow up a solenoid.

I now have the MkII. It hasn't blown up the solenoid.............yet. But this unit cycles and is not a 100% duty arrangement that should be compatible with the solenoids as that is how the auto ECU output works.

Don't EVER change gears with it on except for 3rd to overdrive. EVER
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Re: The Automatic Transmission - talk shit thread

Postby Jrosey on Thu Mar 10, 2016 5:49 pm

Thanks Snowman. Mine is the 5 speed GLX R and is bloody useless while towing at highway speeds. I can live with slip around town but the constant lock and unlock on the open road kills me. Should have stuck with the manual :D Some of the users of them on the Pajero site seem pretty happy with them and use the sports mode to change gears without much issue.
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Re: The Automatic Transmission - talk shit thread

Postby snowman on Thu Mar 10, 2016 8:36 pm

Jrosey wrote:Thanks Snowman. Mine is the 5 speed GLX R and is bloody useless while towing at highway speeds. I can live with slip around town but the constant lock and unlock on the open road kills me. Should have stuck with the manual :D Some of the users of them on the Pajero site seem pretty happy with them and use the sports mode to change gears without much issue.


ok so i only have the 4 speed.

only allow it to change gears from 4th to overdrive.
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Re: The Automatic Transmission - talk shit thread

Postby rsv4dan on Sat Mar 19, 2016 6:14 am

4th gear is "overdrive" in a 4 speed
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Re: The Automatic Transmission - talk shit thread

Postby classy ripper on Mon Mar 21, 2016 7:04 pm

Hey guys hopefully posting in the correct spot im installing the torque converter lock up and need to confirm wiring for a 2013 mn triton, Diagram from wholesale automatics says to tap into a yellow/red trace wire from the tcu. Mine in the same spot appears to be a yellow/blue trace wire,called them and they said to put a multimeter on it as they have no records of this. Went for a drive and in 5th with it locked shows around 9v then unlocked jumps to 16v so looks like this would be the correct wire. Just wondering if anyone can confirm the same colours on theirs?
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Re: The Automatic Transmission - talk shit thread

Postby coughy on Fri Apr 22, 2016 6:53 pm

ok so i read a lot of the posts but i wonted to know how much oil the auto takes after a service
now i know castrol and the like say 9.7 emtpy but what about a fluid replacment??
or after u drop the pan and fit new filter how much oil does it take after that???

and what oil are people using??
castrol
pentrite
mitsubishi
shell
nylon
chief

all the brands i seen at soapy cheap
looking at doing this filter to the old girl

http://www.ebay.com.au/itm/TransGold-Au ... SwBLlVJoBK

and this oil

http://www.supercheapauto.com.au/online ... mendations
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Re: The Automatic Transmission - talk shit thread

Postby GM... on Mon May 02, 2016 1:22 pm

I've recently converted an NL Paj with a ML 3.2 and Auto.
I used Nulon Full Synthetic ATO and used about 12 litres to fill, this was a complete refill including cooler and converter.
I'm not sure if i have an issue with it or it's just the way it behaves, Off the line it takes off quite well but dies when it moves into second gear it appears to rev/slip way to much. I have a 2100Kg Outback Discovery and the transmission struggles climbing off the line on an incline, again 1st is as expected, but terrible in 2nd, have to apply way to much throttle.
I know the transmissions are specific on oil, but i would have thought the Nulon was a superior grade, Would anyone have any experiences?
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Re: The Automatic Transmission - talk shit thread

Postby coughy on Mon May 02, 2016 3:14 pm

m8 if you used that nulon it isnt the right oill for these trans as it is dex3 where this unit needs sp3
From manual DIA QUEEN ATF SP III which is different to dexron 3
u need CASTROL TRANSMAX MULTIVEHICLE it is for these high slippage trans
from castrol webby

A premium synthetic automatic transmission fluid specifically designed for use in vehicles with automatic transmissions made by Asian vehicle and transmission manufacturers which typically have higher anti-shudder performance
i would be changing the oil if it was me

from the castrol webby

http://www.datateck.com.au/lube/castr_au/default.asp
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Re: The Automatic Transmission - talk shit thread

Postby GM... on Mon May 02, 2016 4:25 pm

Thanks Coughy,
I guess i read the container incorrectly, however it does say it is compatable with splll aswell dexron..

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Re: The Automatic Transmission - talk shit thread

Postby Cowboy Dave on Mon May 02, 2016 4:49 pm

I've been running a valvoline full synthetic in mine. Comes in a red container from memory and is also definitely compatible with SP3.
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Re: The Automatic Transmission - talk shit thread

Postby coughy on Mon May 02, 2016 5:29 pm

well maybe it is m8 but i cant find webby info on the nylon auto fluid
has it had a fliter change of late??
maybe the pressures are down needs service?? from a tranny specialist ?
oil level high or to low have you rechecked after oil change??
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Re: The Automatic Transmission - talk shit thread

Postby GM... on Mon May 02, 2016 5:57 pm

Yes, i installed a new filter during the conversion, the wreck the motor and transmission came from had a complete service history from mitsubishi dealer gympie.
The fluid level is ok, i've had a gut feeling on the atf since the day i put in.
I'll give the castrol atf a try,

On another subject, how do you find your challenger?

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Re: The Automatic Transmission - talk shit thread

Postby coughy on Mon May 02, 2016 6:31 pm

ah does the auto in the wreck have a ecu for the transmission?
im now wondering if the ecu is playing games with it and not working correctly?

on the other subject m8 it is a nice car to drive plenty of punch with the mods i have done to it
still could be a bit better tho
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Re: The Automatic Transmission - talk shit thread

Postby 4wd26 on Mon May 02, 2016 6:58 pm

Yes there is a auto Ecu
Was the base model Pajero a diesel or petrol and what sized tyres
All these things play a factor on the really basic auto Ecu and poor shift points

Even with me using different gears 4.6 and a chip the auto does not play correctly, although not too bad on the stutter 1st to 2nd


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Re: The Automatic Transmission - talk shit thread

Postby snakesoup on Mon May 02, 2016 7:09 pm

hi gm, totally off topic of what your talking, but really like to know more about the engine conversion you have done any chance you can run us through of what you went through ?
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Re: The Automatic Transmission - talk shit thread

Postby GM... on Mon May 02, 2016 7:45 pm

Yep has a auto ecu, wreck was a 2008 glxr.
paj was originally a v6 gls auto running 4.6 diffs. Has a no limit chip and 265/75/16 k02's, larger intercooler, plus a few other alterations.

Selwn, you may remember the NJ 3.2 i did was a motor/trany i picked up from you and goes much better than the NL auto, (manual, 4.9 diffs same size tyres)

Cheers,

Snakesoup, ive had this reqest from vic paj forum as well.. I started a writeup then sidetracked, as i mentioned this is the second one i did, the son has the NJ now. I did take plenty of pics and notes throughout the conversion. If you don't see anything come through in the next few days, just remind me.
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Re: The Automatic Transmission - talk shit thread

Postby snakesoup on Mon May 02, 2016 8:18 pm

yeah sweat mate, really keen to see what you did, as I'm sure a lot of others here would be also, as if my 2.5 let's go and mitsubishi play hardball then I want to put a 3.2 in my mn


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