The Mitsubishi Pajero Owners Club®

dhammika · Posted: Thu Oct 22, 2015 5:54 Post subject:

Thought this will be helpful for someone

Speed sensor (only the sensor without the cog) part number is MR122305

http://www.ebay.com/itm/OE-MR122305-Vehicle-Speed-Sensor-Fits-Mitsubishi-Montero-Pajero-L200-L400-/111440523938

dhammika · Posted: Thu Oct 22, 2015 5:58 Post subject:

This one is very cheap
http://www.ebay.com/itm/MR122305-Speed-Sensor-Transmission-For-Mitsubishi-Montero-V6-Pajero-Shogun-/181766402170?hash=item2a521f307a:g:sAoAAOSwNSxVcVKA&vxp=mtr

destroyityourself · ***** Joined: 10 Nov 2014 Posts: 782 Location: wales

Thanks mate

destroyityourself · ***** Joined: 10 Nov 2014 Posts: 782 Location: wales

hi mate, youve had much better luck than me... i feel like am fighting a loosing battle lol

you said
"3. There is a mark (small notch) on the top of the hole, where corresponding cog teeth range mark of the cog housing needs to be aligned with (And it seems my cog housing is not at the correct position)

i believe mines is the 29 teeth speedo gear, so id need to aline 29-32 right, where exactlly should they be? at the moment they just to the right of the 12mill bolt

would swapping the speedo drive into another alloy housing make any difference, i noticed one had 1 marked inside and another 3

Roadrunner2110 · ****** Joined: 08 Dec 2010 Posts: 2471

octanepwr · Posted: Mon Sep 16, 2019 10:11 Post subject:

Having issues with speed sensor possibly...

Last time my speedo died I replaced the whole sensor unit (internal+external) with a 2nd hand and it worked fine for 3 years.
Now it has died I replaced the sender only (the MR122305 part of ebay) and it isn't working.

If the mark you line up on the sensor e.g. 29-32 on the transfer case it at the top (as previous poster said align your required number to the top of the transfer case), it looks like mine is in the wrong place. However I don't get how it worked for 3 years and the teeth don't look damaged in any way.

I don't have a handy 12V PSU to do the spin/pulse test. I could mess around with leads and the engine start battery but rather not subject to the below.

If I rotate the thing until it lines up with the right teeth amount, will it risk damaging it at all if I get it wrong?

I also tried with ignition on earthing the middle plug on the pin which was meant to max the speedo out but didn't - is this analysis correct that perhaps my problem is with the speedo this time - however I have my doubts as see the impact of dodgy solder on my rev gauge - it comes on and off all the time - the speedo is just fully stone cold dead?
The positive pin is reading battery voltage.

Thanks if anyone can provide any insight

dhammika · Posted: Mon Sep 16, 2019 12:18 Post subject:

octanepwr, if pointer is not moving when grounding the blue wire means, there is a connection problem. You need to fix that first.

I will take a photo of my pajero and post here to understand how the cog hosing should be fixed into the transfer case.

octanepwr · Posted: Thu Sep 19, 2019 11:20 Post subject:

ok thanks. I have removed speedo once before but any tips on which connections might be dodgy - or is it just look by sight?
Be great to see the pics of lining it up, and understanding if i get it off by a tooth or two and test drive will I shred the cog?

dhammika · Posted: Thu Sep 19, 2019 11:27 Post subject:

dhammika · Posted: Fri Sep 20, 2019 13:57 Post subject:

See the small mark and in the transfer case housing and the trangle mark in the cog housing for the teth number (inside red circle)

Google Photos URL incase imgur decided not to allow forums to show their images Smile

https://photos.app.goo.gl/TQpFsoD7CkfvUbNB8

octanepwr · Posted: Mon Sep 23, 2019 9:13 Post subject:

ah great thanks.
I will check this prior to pulling the speedo out but would like to think last time I changed it i put it in right...
Any obvious joints/bits on the speedo to look for?

octanepwr · Posted: Tue Sep 24, 2019 10:38 Post subject:

Fixed! had some dodgy joints and some of the copper surface was near broken, so soldered some jumper wires on.

Sensor was in right.

Hugh Michael · Posted: Fri Feb 25, 2022 17:56 Post subject:

That is all very helpful, thanks a lot.