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Old 09-10-19
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m_and_m m_and_m is offline
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Default step-by-step guide on how to monitor transmission temperatures

In the video (link) of auto-mate showing how effective it is at reducing the transmission temperature, I use the Ultra-Gauge to display the temperatures (Pipe and Pan oil temp).

One of the most common questions I get asked is how to setup an an OBD2 reader to monitor the transmission temperature.

Attached is an article I wrote that provides an understanding of why you should monitor the transmission oil temperature, plus a step by step guide for setting up two of the common OBDII solutions:
  1. UltraGauge MX
  2. ScanGaugeII
The article is applicable for the Mitsubishi Pajero (NS, NT, NW, NX), Challenger (PB and PC), and Triton (MN and MQ).

I'll also add Android Torque Pro instructions in the future.
If anyone can confirm the details for the Pajero Sport - I'll add that too.

cheers Marshall
Attached Files
File Type: pdf MM4X4 OBD2 Reader Setup Rev C.pdf (1.42 MB, 335 views)
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Checkout our products at MM4x4 http://www.mm4x4.com.au auto-mate or lockup-mate now available for Pajero NS+, Triton MN,MQ, Challenger PB,PC, Prado 150

Last edited by m_and_m; 09-10-19 at 07:33 AM.
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Old 09-10-19
Pwoffey Pwoffey is offline
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Very nice, thanks for this Marshall
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Old 09-10-19
BruceandBobbi BruceandBobbi is offline
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Hey Marshall.

What is the "normal" operating temp for the Jatco box?
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Old 09-10-19
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Very nice Marshall, thanks so much. I've been wondering lately as to whether I could monitor pan temp as described in your Youtube clip but using the Scangauge. Was planning on messaging you but you've beat me to it.

Cheers,

Benny.
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Old 09-10-19
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Quote:
Originally Posted by BruceandBobbi View Post
Hey Marshall.

What is the "normal" operating temp for the Jatco box?
There isn't a specific normal temperature, rather a range.

It's too hot if above 125degC, as this is when the oil starts to deteriorate.
Below 45 degC they don't change gears quite as smoothly.

Generally around 65-75 degC is an ideal temp to have the transmission. A bit higher or lower is still fine though.
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2016 NX Exceed 3.2 DiD, ARB BBar | OME 2" lift | Airbags | Safari snorkel | GME UHF | Towbar | Tow pro elite ECB | Full Bushskinz UBP and side steps | TPMS | HID highbeam upgrade | 9" LED spots | 100Ahr Aux. Battery | Oil catch can | Flappy Paddles | auto-mate
2016 LC200 Sahara V8 Diesel,Lots of Mods too

Checkout our products at MM4x4 http://www.mm4x4.com.au auto-mate or lockup-mate now available for Pajero NS+, Triton MN,MQ, Challenger PB,PC, Prado 150
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Old 09-10-19
BruceandBobbi BruceandBobbi is offline
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Thank you.
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Old 09-10-19
Ian H Ian H is offline
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Excellent work Marshall, thanks.
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Old 09-10-19
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It is also worth remembering that once the load has come off the unlocked torque convertor, after climbing a steep hill and descending the other side of the hill, the ATF temperature can continue to rise because the torque convertor is not locked up when there is not accelerator input. When the torque convertor is unlocked and the vehicle is "coasting" the ATF does not circulate through the ATF coolers so the ATF is stationary and sitting in a hot torque convertor. This is done to decrease fuel consumption but at the penalty of overheating the ATF. So the ATF takes a long time to cool down, particularly in very hilly country and especially when towing.

Lockup Mate keeps the torque convertor locked up even when there is no accelerator input, this allows the ATF to circulate through the ATF coolers after the load has been reduced and results in ATF temperatures dropping rapidly. Auto Mate works slightly differently as it unlocks the torque convertor when coasting down hill, however there is a special feature that locks the torque convertor up to provide downhill ATF cooling if the ATF is over 85C. Marshall really has thought of everything!

This is just another reason why the MM4x4 Lockup Mate and Auto Mate products are superior to other torque convertor lockup kits that are on the market.

OJ.
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Old 20-10-19
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This is a great set of instructions.

I have been running a Scangauge since getting the NW an programmed the ATF with the following MTH 00010001FFD0, which was posted on the forum long ago as being correct. It looks reasonably accurate to my untrained eyes. I see your instructions quote the MTH 00010001FFCE for a marginally different offset.

Given your in-depth knowledge of how the Aisin trans operates, I was wondering why there is a difference in the MTH.
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Old 20-10-19
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Quote:
Originally Posted by old Jack View Post
...Auto Mate works slightly differently as it unlocks the torque convertor when coasting down hill...

Is that correct?
I ask because that was the reason I set the AM8 to lock up from 3rd, I found coasting towards the lights or a stop it would pull you up a abruptly as it was staying locked up in 2nd when coasting.
It still locks up in 3rd coasting but the engine braking isnít as severe on the higher ratio.



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