Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: colv6 on 28 August 2013, 20:55:54

Title: autobox slipping
Post by: colv6 on 28 August 2013, 20:55:54
brothers car, 98 3ltr elite m/f

been off the road for two years (builder runs a van a the daily workhorse)
took it for an mot last saturday flew through one advisor rusty disc's
 on his way home noticed steam from the drivers side, temp guage reading all ok jumped out to check on lifting the bonnet vapour from the rear of the engine left hand side as viewed from the front and a brownish fluid driping from the rear of the engine block.
after a while got back into the car after checking all fluids were ok, headed to my place no warnings on the mid or dash after about half a mile the car was behaving as a manual would with a sliping clutch just reving very little drive in d or 1 2 3 left to stand a while ran perfect again for half a mile then same fault.
at my place papercliped no faults
code reader on transmission reads fault code p0722 -(4) output speed sensor circuit no  signal - not present.

filter removed cleaned and replaced along with new fluid still same problem, code cleared then when retested p0722 code again

any pearls of wisdom gratefully recieved.

 
Title: Re: autobox slipping
Post by: dbug on 28 August 2013, 21:56:33
Sure you've got the correct amount of atf in (see maint guides) - symptoms are of low atf ;)
Title: Re: autobox slipping
Post by: henryd on 28 August 2013, 22:47:59
I would say the leak was from the HBV given the location you describe,as for gearbox,as dbug says fluid level :y
Title: Re: autobox slipping
Post by: omegod on 28 August 2013, 23:13:23
Sounds like HBV, maybe soaked the selector switch?
Title: Re: autobox slipping
Post by: colv6 on 31 August 2013, 19:58:57
after spending the afternoon under the car and folowing mark's guide to the letter still no joy.

same as before after a couple of min's no drive in any gear, it just feels like something has told the box it's in nutural, turn it off give it a second and restart and all is fine as though it has reset it self, then same fault again.

can anyone tell me in plain english what the fault code means,
p0722 -(4) output speed sensor circuit no  signal - not present.

Title: Re: autobox slipping
Post by: colv6 on 31 August 2013, 20:07:04


   omegod,
    Sounds like HBV, maybe soaked the selector switch?

where can i find this switch ?
Title: Re: autobox slipping
Post by: FERRETMAN1 on 31 August 2013, 20:22:53
mine had same prob after being parked up crank sharft seal went flat not realizing went for mot torque converter blew whilst over pit new seal and secondhand torque ok now
Title: Re: autobox slipping
Post by: colv6 on 31 August 2013, 20:35:08
thanks for the input, might be time to look for a gearbox ?
Title: Re: autobox slipping
Post by: pscocoa on 01 September 2013, 10:59:44
before getting too drastic with gearbox I would try and new GM crank sensor. Replacing atf and filter plus new crank sensor sorted my similar issues 4 years ago.
Title: Re: autobox slipping
Post by: colv6 on 01 September 2013, 14:21:19
i hear what you are saying but would a duff crank sensor not through up a 19 fault code ?
Title: Re: autobox slipping
Post by: tunnie on 01 September 2013, 14:22:41
i hear what you are saying but would a duff crank sensor not through up a 19 fault code ?

Not always  :y
Title: Re: autobox slipping
Post by: colv6 on 01 September 2013, 14:47:02
i will go and collect a hbv and crank sensor of omegod who is braking one at the moment, change them and see what happens from there ?
Title: Re: autobox slipping
Post by: sassanach on 01 September 2013, 20:51:46
why don't you check/replace the output sensor and wiring at the rear of the box?(delete as appropriate)
Title: Re: autobox slipping
Post by: colv6 on 01 September 2013, 22:26:47
i take it that is what the fault code is pointing to?  i am on a steep learning curve here, any one got a pic of a autobox and where each part is ?
Title: Re: autobox slipping
Post by: sassanach on 02 September 2013, 15:37:38
the output speed sensor is on the tail shaft of the slushbox with a multiplug on it.the chances are that the plug has been broken,i think the boy did this once when he removed his slushbox and forgot to unplug it first.maybe the wires were strained on a previous box removal?
Title: Re: autobox slipping
Post by: Gaffers on 02 September 2013, 15:38:57
Are you sure the gear selector is clean and working?
Title: Re: autobox slipping
Post by: colv6 on 02 September 2013, 22:19:17
the honest answer is no so tomorrow's job's are to remove the speed sensor from my car and see if I cures the fault in robs car first then if that don't work try the selector from my car,
basically using my car as all is working well on mine
Title: Re: autobox slipping
Post by: colv6 on 04 September 2013, 21:43:16
today's update

output speed sensor removed from my car and swaped over to rob's no better.
gear selector checked and set correctly, no better.

so tonight started from scratch after a conversation with elite pete started by removing slush box sump to check if thrust washer was in bits in the bottom, and removed other sump to clean the filter the garage said they had already done this is what we found in the bottom of both sump's

(http://i708.photobucket.com/albums/ww84/colv6/DSC_0009_zps5311b7ed.jpg)

at first i thought i was old gasket but it seams to be magnetic can some one please tell me what this is ?


Title: Re: autobox slipping
Post by: Elite Pete on 07 September 2013, 11:21:58
It looks like sections of sump gasket to me but i'm stumped because there are no bolt holes in it and it all looks curved :-\
Title: Re: autobox slipping
Post by: Entwood on 07 September 2013, 14:40:20
Looks like either one or more brake bands or clutch linings ?? - not good whichever - as magnetic I'd think more likely to be the brake bands as they are usually steel  :(
Title: Re: autobox slipping
Post by: colv6 on 07 September 2013, 20:58:37
it has got me stumped it's definitely paper of some type I think the magnetic bit is actually the fact the were near the magnet in the sump so covered in atf and fine metal. picked up a selector switch today from omegod so that's the next step

Title: Re: autobox slipping
Post by: symes on 07 September 2013, 21:56:08
brake band material :'(
Title: Re: autobox slipping
Post by: colv6 on 07 September 2013, 22:01:53
so am I flogging a dead horse?  better off looking for another gearbox? 
Title: Re: autobox slipping
Post by: symes on 07 September 2013, 22:06:26
well is that stuff  like a fibre?? bet is like old gasket material? right--then its broken up clutch from bands---low/no oil causes that-and yes box rebuild/junk time-TBH  :(
Title: Re: autobox slipping
Post by: colv6 on 07 September 2013, 22:36:14
not the answer I was hoping for, what am I looking for 98 3Ltd elite ar25 or ar35?
Title: Re: autobox slipping
Post by: albitz on 07 September 2013, 23:32:02
3litre needs AR35.Ive got one here,but delivery might cost a few bob.
Title: Re: autobox slipping
Post by: sassanach on 08 September 2013, 12:04:48
its hard to get any sign of scale /size from the pics,ie what dia would the bits approximate too?ps there is only one brake band at the rear of the box :y.does the gearbox work normally at low speed,?ie 1,2,3 but throws a wobbly when it does into 4/lockup?
Title: Re: autobox slipping
Post by: colv6 on 09 September 2013, 21:12:25
I have changed the selector switch tonight what a pig of a job I will put the two sumps back on and refill tomorrow then with fingers crossed give it a try.
I have keep a few bits so will take a photo with a tape measure next to it to get an idea of scale.
it works in all gears until it decides to go in to neutral then nothing in any gear until turned off and restarted
Title: Re: autobox slipping
Post by: sassanach on 09 September 2013, 21:42:23
you have a pile of unidentified crap in the sump and you have changed the selector switch,if you get away with this can you pick my lottery numbers this week? ;D ;D
Title: Re: autobox slipping
Post by: symes on 10 September 2013, 20:42:11
still reckon that a clutch gone---rover did that when it was 3.9 on BW65 :( :(
Title: Re: autobox slipping
Post by: colv6 on 10 September 2013, 21:41:57
todays update,

both sumps refitted, gearbox filled and then topped up as per guide, after a short test drive box is working but not changing gear properly start in 1 then change to 2 all ok but change to 3 and nothing, no kickdown either.
 automatic gearbox is now being displayed on mid.

sassanach, it is paper of some kind

(http://i708.photobucket.com/albums/ww84/colv6/DSC_0013_zpsa5feddb8.jpg)


it's only half fixed so 3 16 22  :y