Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: Jaymd on 07 December 2010, 23:45:39

Title: auto gear box
Post by: Jaymd on 07 December 2010, 23:45:39
hi guys i posted a shout for help yesterday about my auto box today its another shout for help i was checking the underside of the car for oil as i have just changed rocker cover gasket and not sure if its still leaking. i had the engine running at the time but then all of a sudden the gear box light cam on and it started amking a really loud banging noise. the engine started running really rough and it hardly manages to idle. not sure what to do i havent checked the oil level in it would it be worth topping up the oil or not as if i need a new gear box i dont wanna sepnd more money on changing the oil as it can go towards the new box pleaseeeee help :(
Title: Re: auto gear box
Post by: Kneepad on 07 December 2010, 23:55:10


Yes, I would check the fluid level.
Do the lights along the gear selector
work as they should when you select
different gears?
Title: Re: auto gear box
Post by: Jaymd on 08 December 2010, 00:02:45
erm well kinda yea what happend is i had a short circuit in the ashtray which some how blew the headlight switch which i havent yet replaced. when the healdight switch is off it does show the lights when on it does not. im hoping its the fluid but its never done this before. :S
Title: Re: auto gear box
Post by: johnmjess on 08 December 2010, 00:03:17
Might be a silly ?? but does the car select D and move, Even if the g/box went the fluid flywheel would still allow the engine to run as normal.
Select each gear in turn and hold it there for 30 seconds to see if the gearbox noise changes, do this twice
Title: Re: auto gear box
Post by: Jaymd on 08 December 2010, 00:06:08
it selects d fine and all the others and drives too not soo good its reallly running rough sorta like its miss firing but the cars telling me to check gearbox ;s and theres a loud knocking noise coming from the gear box.
Title: Re: auto gear box
Post by: Jaymd on 08 December 2010, 00:15:16
oooook so ........ i tried putting it in gear it feels like chitty chitty bang bang the engine feels rought the cars squeeks wen i put it in gear not so much knocking now though but wen i put it in gear the juddering gets worse and the car shakes loads :S any ideas lol
Title: Re: auto gear box
Post by: johnmjess on 08 December 2010, 00:15:45
Autobox uses oil to transfer power and has very few parts if any that would cause a knocking sound. The gearbox light is telling you there is an electrical issue with one of the gearbox inputs/outputs. The car may now be in limp mode to prevent damage to the box. Not sure if you can read gearbox fault codes with a cheat, sorry
Title: Re: auto gear box
Post by: Jaymd on 08 December 2010, 00:18:17
thanks ill try some more oil tomorrow and if that dosent work ill pop it to a garage this is a bit outa my depth but thanks for ya help guys and cheers john much appreciated :D
Title: Re: auto gear box
Post by: Kneepad on 08 December 2010, 00:21:25

No code reading cheats for the 2.2, a code reader is required.

I'd check the fluid level as soon as possible.
Title: Re: auto gear box
Post by: johnmjess on 08 December 2010, 00:22:48
http://www.honestjohn.co.uk/forum/post/index.htm?t=86752 , seams to fit your prob, so may be a cheap fix
Title: Re: auto gear box
Post by: Kneepad on 08 December 2010, 00:33:43


The dirty selector switch is a common fault with the Omega ar25 and ar35 auto boxes that is why in my first post I asked about your gear selector lights.
The fault is accompanied by the lights flashing randomly or coming on all at once.

There is a guide to repairing this in the maintenance section.   :y
Title: Re: auto gear box
Post by: Kneepad on 08 December 2010, 00:35:58



Have a look here:

http://www.omegaowners.com/forum/YaBB.pl?num=1267956397
Title: Re: auto gear box
Post by: Jaymd on 08 December 2010, 12:40:54
thanks kneepad much appreciated she started fine this morning and then drove fine :S think it could be oil im hoping lol just how to find the drain plug :S
Title: Re: auto gear box
Post by: Kneepad on 08 December 2010, 14:03:32


Drivers side of gearbox.   :y

Edit:  Not a drain plug, fill and level check plug.
Title: Re: auto gear box
Post by: Jaymd on 10 December 2010, 19:00:06
hi guys just updating the oil level the level didnt seem too bad so i topped her up now shes running ok  but the light still tends to come on now and then but she still drives fine gearbox sounds good. topping her up hasnt made much difference to the drive but has deffinitley solved the noises. i think the next step is to have the faults cleared and read.
Title: Re: auto gear box
Post by: Kneepad on 10 December 2010, 19:27:01


It's maybe time for a complete AT fluid change. If you decide on this, do the filter as well.   :y
Title: Re: auto gear box
Post by: Jaymd on 10 December 2010, 19:56:51
thanks kneepad i will i dont think its ever been chnaged :S how do i change the filter on on of these any tips? and plus id rather try the cheaper options than pay out for diagnostics at top end labour prices :(
Title: Re: auto gear box
Post by: Kneepad on 10 December 2010, 20:11:28


The filter is inside the gearbox sump you''ll see it when you take the sump off. It's held by 3 screws.
There is a guide in maintenance.   :y
Title: Re: auto gear box
Post by: geoffr70 on 10 December 2010, 20:17:27
Well I don't know what gearbox the 2.2 has, but if you're doing a filter change, as kneepad said the sump will have to come off, which means you will probably need new gasket(s), as when i did mine they were stuck on. You might aswell just do a full oil change at this point.

Here is a guide, but it's for the ar25 and ar35 gearboxes. As said i don't know what gear box the 2.2 has, but this might help you somewhat

http://www.omegaowners.com/forum/YaBB.pl?num=1289757627
Title: Re: auto gear box
Post by: Brikhead on 10 December 2010, 20:45:10
Quote
...it's for the ar25 and ar35 gearboxes. As said i don't know what gear box the 2.2 has...

As far as I know all automatic Omegas have an AR25 fitted at the factory, apart from the 3.0 and 3.2's which have the AR35.