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Generation 4-1 Pajero NS Model 2006 - 2009

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  #21  
Old 09-02-20
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geopaj geopaj is offline
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Quote:
Originally Posted by nj swb View Post
At 80km/h in 5th the engine is around 1500 rpm, the torque converter is unlocking to reduce vibration. At lower engine speeds vibration will increase with load - the lower the revs, the lower the load at which vibration becomes noticeable. Above about 2000 rpm this vibration is no longer noticeable at any load.

In 4th gear, above about 2000 rpm, the Aisin transmission in the Pajero does not unlock the torque converter under load.
This has been my findings too (including when towing).
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  #22  
Old 10-02-20
chrisfarru chrisfarru is offline
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Sorry for the late reply. This is what I was forwarded
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File Type: jpg resistor.jpg (153.6 KB, 32 views)
File Type: jpg Installation.JPG (53.6 KB, 48 views)
Attached Files
File Type: pdf Pajero Gen 3 Torque Converter Lock Up Kit.pdf (980.6 KB, 27 views)
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  #23  
Old 10-02-20
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Quote:
Originally Posted by chrisfarru View Post
Sorry for the late reply. This is what I was forwarded


Thank you very much.

Ive seen a few diagrams but yours is easiest one to read.
Im going to attempt this one day when Ive done enough research and gained enough courage.
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  #24  
Old 11-02-20
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Quote:
Originally Posted by chrisfarru View Post
Sorry for the late reply. This is what I was forwarded
Thanks mate! The trouble with this type of setup is it causes the solenoid to prematurely fail. The factory ECU only runs the solenoid at about 50% duty cycle to keep the converter locked, that equates to about 5-6v. The coil in the solenoid burns out if its fed 13-14v constantly.

Ive got my setup functioning properly after a few days of troubleshooting once I installed it in the car. Turned out that I needed a diode to stop feedback from the solenoid interfering with the operation of the mosfet. That bloody 35c part had me scratching my head and going mad trying to figure out why it was working on the bench, but not in the car!
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  #25  
Old 11-02-20
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You may find information in the following post useful.
https://www2.pajeroclub.com.au/forum...ad.php?t=35928

OJ.
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  #26  
Old 11-02-20
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For anyone that’s interested the Jatco box runs a 2.9khz PWM frequency and when the ECU locks the converter, it starts at roughly 65-70% duty cycle before dropping to 50-52% within a couple of seconds. Obviously it engages it fairly firmly to make sure it doesn’t slip and then backs off once it’s properly locked.

The setup that I’ve built cost about $100 all up to throw together and at this stage is just a basic lock/unlock setup. I’ll keep playing with it now it’s functioning in the car and aim to have it unlock automatically when coming to a stop and then lock again once it reaches a certain speed. Could also use throttle position etc to influence its behaviour. Just a matter of getting the time to tinker with it.

I’m also starting to work on an arduino based boost controller for the VNT turbo setup. ��
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  #27  
Old 11-02-20
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This is what it turned out looking like all put together. I did away with the potentiometer and stuck with a fixed duty cycle.
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  #28  
Old 22-02-20
jimsutt jimsutt is offline
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Quote:
Originally Posted by geopaj View Post
This has been my findings too (including when towing).
I have never noticed any vibration. I understood that the lock up was to reduce fuel consumption while cruising under light loads.

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  #29  
Old 23-03-20
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Quote:
Originally Posted by jimsutt View Post
I have never noticed any vibration. I understood that the lock up was to reduce fuel consumption while cruising under light loads.

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Exactly...

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