M35 Attesa Ets "pressure Switch" Problems

[Sage222]

thought id do a big bump on this one.. I am still getting the blip of power to the front wheels (shows up on the front torque gauge) now and then usually when the gearbox shifts from first to second gear.. no 4WD light ever. (thanks scotty - that was just a faulty relay). Though this blip of power to the front wheels even when using very low throttle causes the car to do a very ugly shift into second. or very occasionally a slight surge at 60-70kmh.

If i pull the relay and have the 4WD light come on (hence RWD only) car is smooth as silk.

also smooth as silk if i flick to synchro.

Anyone else have this problem? Going to bleed the atessa with scotty in the next couple of weeks though would like to see if anyone else has any ideas.

just been doing some googling. Some people are saying that it can be caused by non-matching front and rear tires.. I run factory ARX 18's they did come with 235/50/18 though i changed them to 245/45/18. surely it cant be that??

Cheers.

Edited November 28, 2013 by Sage222

[scotty nm35]

If all the tyres are matching there isn't much else you can do, unless the fronts are worn more than the rears?

Hopefully it just needs a flush, new fluid can only help it, and get rid of any built up air in the system.

[TM35]

Today I had my first encounter with exactly the same thing between 5-10% torque showing on the gauge in 1st gear and into the beginning of 2nd... No green 4WD light up on dash either.

Made the car sound like it was working extremely hard but performance was anything but. Didn't at all turn the tyres was probably best described as like a slipping manual clutch sensation...

Ok it had been very lightly drizzling in Adelaide, still I had pictured qtr turn of opposite lock to be the result...?

Only owned NM35 for a couple months...

So is this the normal occurrence

[Sage222]

just an update for those following and or having the same problem. My car was due for a front right wheel bearing.. This seems to have been causing issues with the atessa. making the car pulse power to the front wheels when cruising (50-80kmh). Also even gave me a symptom like fuel cut when using near or wide open throttle. both these things have been fixed by the wheel bearing replacement.. (thanks Scotty!).

quite strange. we bled the atessa fluid too. so now i am back tot he occasional blip of front torque when going from first to second.. no other symptoms..

[scotty nm35]

So running well buddy, good to hear.

[Sage222]

yeah mate. running real well i reckon that atessa bleed has helped too.. just need to do that dif bush let me know when you get em in

[Daleo]

yeah mate. running real well i reckon that atessa bleed has helped too.. just need to do that dif bush let me know when you get em in

I sent diff bushes down to Scotty last week, if Auspost get off their arses they should have them to him shortly.

[scotty nm35]

Yeh, they arrived on Friday. Should have some time by next week all going well. Still catching up on work since my few days off over Christmas.

[Daleo]

Cool, cool; I thought Auspost might've gone on a holiday.

Should have more coming in stock shortly.

You didn't like my wrapping?

[Erop]

you may be interested - in cold Russia the most suspicious part of ATTESSA is used to be the pressure control switch, which causes C1208 error reading

this is one of this crap pieces

it's not aviable to order from Nissan separately

we have found the replacement one -

http://wako-clinac.co.jp/product_en/ps-20_en/index.html

the thread is metric M10*1.25

length of thread 10mm (2.5mm O-ring)

[scotty nm35]

Nice one Erop, I have an assembly here with pressure switch problems, I might give this switch a shot. Thanks.

You don't happen to have a part number for the correct pressure and thread do you?

[Daleo]

I love the way you guys work!

Well done Erop; I'd imagine you guys would find some issues due to your weather conditions & road salting?

[Brick]

Mine is having pressure switch issues also. Would love to know the part number also

[Erop]

this switch is only marked with PS-20

the WAKO doesn't sell less than 1000 pcs

now looking for byuing this switch, still no exact code, Scott's right

BUT - you may take it from R32-R34, Laurels, Glorias - their ATTESSA is similar in such parts, and their used spares are cheaper

in my mind - the reason is lack of changing of this fluid, which causes mechanical problems in winter, cause my one (350K on odo since 2001) still works, i replace the ET-S fluid every year

Edited January 15, 2014 by Erop