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[Marks DTM Calib]

I don't think I've ever seen an AR25 thrust washer fail.... plenty of AR35's though 

You wont with the sump pans still on 

I have 

[JamesV6CDX]

I don't think I've ever seen an AR25 thrust washer fail.... plenty of AR35's though 

You wont with the sump pans still on 

I have 

You knew what I meant!! 

I'll rephase.

I've never seen a 4 pot petrol, with a thrust washer failure.

A few V6's though.

Always concluded that perhaps the lawnmower engine isn't quite as powerful as the others and hence doesn't put so much pressure on the box

[JamesV6CDX]

As an aside - I took the sump pans off my MV6, and there was no thrust washer.

When I took the box up to Mr Sassanach and we took it apart - it had still failed - and was all broken up inside the box, so wouldn't have been visible within sumps...

The more I hear and see with these autoboxes, the more I think manual is the way to go

[amba]

What symptoms was your auto box displaying ,James,with the thrust washer bust up ?

[JamesV6CDX]

Mainly thumping into top gear if giving it some beans. (if you were really really gentle up to 50mph, it would be a smooth change, but anything other than light throttle it was a jerk)

Might have been broken up for some time.

My main issue was my revcounter on 6,000rpm and the car barely creeping forward.... 

[amba]

Thanks for extra info.

Mine is displaying none of those symptoms in fact it only ever seems to have an issue around 20-30 mph going down gears especially but very occasionaly, up shifting.

Am now more than convinced its the solenoids between 2nd and 3rd so as I do have a full replacement set here will wait for a dry  day,if they still exist,and drop the sump pans and replace them along with yet another £50,s worth of  ATF .

[JamesV6CDX]

If the ATF is recent and no debris, just re-use it 

[SIR Philbutt]

Had very similar problems with my x reg 2.2 auto. Did the atf/filter etc and eventually found it was the cam sensor (GM one). problem didn't seem to occur from start up, only occurred after engine got warm. Also went away during winter, probably because the front of engine was cooler then ??  .

What I did to get around 2-3 change problem (as it would hesitate then thud - then safe mode) was slip to N then back to drive and this would make it change smoothly. New cam sensor resolved it.

Just thought I would mention as I didn't see anyone else mention

[amba]

James..Think for extra peace of mind I would put new ATF in as its a messy job anyway and even slightly used ATF smells a darn sight worse than new and even that isn,t nice.

Philbutt...all posts have been on a V6 so whilst I am not ruling out the possibility of it being a cam sensor think it is inside the box where the issues with mine are.

[Steve B]

well been for MOT and cannot believe that i have passed. magic .one thing out the way..

anyway to shed some more light on this subject, on way back at yet again around 20mph car revs like i have dipped the clutch.
but it was different this time i got drive back like always soon as i took foot off pedal. but would not let me select sports mode ie;(button on
top of stick) and the spanner through car light came on.
once i turned ignition off then on again the s button worked again
and here are the codes i got

engine section
.......................
P1700 - SVS request via CAN
 (00) - Not present

transmission section
...........................

P0730 - Gear Ratio Incorrect
 (08) - Not present

[amba]

Glad you have another 12 months clean bill of health

Now lets try and fathom out whats going on with these gearboxes 

[buttsy19]

It would seem to be pointing towards the 2/3 shift solenoid.

P0730 wiring fault, shift solenoid or mechanical failure of the box.

[noel]

looking for feedback from anyone who has ever experienced these faults with a autobox,

surely im not the only one to have this problem ar25 auto box


i need to point out that the fluid was fully replaced within the last 48 hours

when the fluid was taken out iirc there was approx 4.5ltrs when it was refilled i think 6.5ltrs went

in..therefore it was clearly low


the firmware in the box is fully up to date within the last 48 hours

the car is a 2.2cd petrol with 53 on the clock


i need to point out that the 2 faults were there before the atf was change and updates were done.

and it is not the gear selector on the side of box.

there are no fault codes at all i am fully clean (no eml)

and here is the prob.....

(1)going along 20 mph ,foot lightly on throttle..lift it off and then(thud) a kick in the back...(feels like you

have just been hit from behind..IE (slight hit)

(2)going along 20mph foot lightly on throttle....then suddenly car revs like it has just had clutch dipped,
take your foot off gas pedal and all is normal again(but its a auto)

HAS ANYONE EVER HAD ANY OF THESE PROBLEMS......

looking for feedback from anyone who has ever experienced these faults with a autobox,

surely im not the only one to have this problem ar25 auto box


i need to point out that the fluid was fully replaced within the last 48 hours

when the fluid was taken out iirc there was approx 4.5ltrs when it was refilled i think 6.5ltrs went

in..therefore it was clearly low


the firmware in the box is fully up to date within the last 48 hours

the car is a 2.2cd petrol with 53 on the clock


i need to point out that the 2 faults were there before the atf was change and updates were done.

and it is not the gear selector on the side of box.

there are no fault codes at all i am fully clean (no eml)

and here is the prob.....

(1)going along 20 mph ,foot lightly on throttle..lift it off and then(thud) a kick in the back...(feels like you

have just been hit from behind..IE (slight hit)

(2)going along 20mph foot lightly on throttle....then suddenly car revs like it has just had clutch dipped,
take your foot off gas pedal and all is normal again(but its a auto)

HAS ANYONE EVER HAD ANY OF THESE PROBLEMS......

unfortunately i have had this problem but i also had a high pitched whistle whilst accelorating,car was diagnosed via tech2 by vauxhall dealer in cornwall and diagnosed it as torque convertor failure.
i decided to replace the auto box in the end as cheapest option,on stripping down the old gearbox i found the remains of the thrust washer and bits of alloy as well in the small sump of autobox so it was'nt the torque convertor that failed but the thrust washer  HTH

[sassanach]

i sure jamesv6cdx had the same high pitched whistle on his tranny and it turned out the the front sprag clutch was mullered.if a tc fails your going nowhere...

[Steve B]

sassanach you have seen this  prob in a previous post i have found 2 years ago
just reading through it at the mo

http://www.omegaowners.com/forum/index.php?topic=76372.30