Easy select 4spd auto slow to engage D or R on cold start up

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Easy select 4spd auto slow to engage D or R on cold start up

Postby peterwandoch on Fri Nov 01, 2019 1:23 pm

Hi guys, I have 2012 MN 2.5 4spd easy select auto problem, On first start up in the morning it takes 30 secs(timed) to select either D or R at engine idle before engaging, once the auto has reached operating temp around a 5 klm drive I get a squealing noise when the O/D is engaged, it will go away if O/D is disengaged. After the initial start up it usually selects staright away. The auto oil is black,I have changed the oil and the filter, pan only, and it improved marginally. The oil is black again after about 300klms. I am thinking to flush the auto and see if this improves it. Has anyone had a similar problem and how did you fix it? Any advice would be appreciated.
I did try and search the forums but I couldnt find anything.
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Re: Easy select 4spd auto slow to engage D or R on cold star

Postby NowForThe5th on Fri Nov 01, 2019 4:42 pm

The gearbox oil is clagged. Flush it all out.

Fill, run a bit then drain. Repeat multiple times until it comes out clean. Probably take about 20l.
Chris

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Re: Easy select 4spd auto slow to engage D or R on cold star

Postby peterwandoch on Fri Nov 01, 2019 5:47 pm

cheers, this is my next step
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Re: Easy select 4spd auto slow to engage D or R on cold star

Postby RHKTriton on Sat Nov 02, 2019 12:33 pm

Definitely flush.

Did my son's preowned MN not long after acquisition ( as intended to keep 5+ yrs).

Replaced oil and filter on transmission.
Then opened the connection at the fluid cooler.
Collected the dirty oil from the transmission while replacing with new fluid as required.

Improved performance heaps.

Allow yourself potentially 20l to do the job. I think we got away with around 16l.
Easy to do and better than adding and draining fluid via the sump method, where ultimately, contaminated fluid is still circulating.
Don't let the b'strds get you down!!
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