Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: SHARPEY on 01 September 2006, 13:16:11
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Just bought a dirt cheap 2.0 GLS Auto. I knew it had a problem with 4th gear but it was cheap and I was told it was probably either a sensor or the fluid and not the box itself. It drives ok at first in DRIVE but then slips and feels as if its in neutral. It works fine if you put it in 3.
I had a guy I know plug his diagnostic computer in and it said something was wrong with the mass air flow meter and explained this could affect the gearbox but his computer would not talk to the gearbox. I have looked on ebay and can get a new meter for £52 but wanted some advice as to if you guys think this will solve it. It did have the gearbox warning light on and would not go into sports mode prior to being connected to the computer. :(
I am going on holiday on Monday so think I will let the garage change the fluid first to see what happens but any advice would be most welcome. ;)
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Can't help you much here I'm afraid, but there is a lot of expertise on here and I am sure someone will come along shortly with some advice.
Don't despair.
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Thanks mate. Just hope it doesn't need a new box and i've bought a complete donkey !! :'(
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Ronnie is our box specialist - he takes them apart with his teeth and rebuilds them with his toes,....
seriously dont sweat it - sure he will be on soon (he has a new delivery today so guess busy outside)
even a new box and fitting wont cost the earth ( worst case ) :) obviously dont go to dealers ;) as most jobs can be done yourself with the excellent support on here
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Hi Sharpey.
I'm not an autobox expert :(
Top up fluid (you can do this yourself) to see if that helps. Must be Dexron III
Engine managment errors may put autobox in limp mode.
Being a 2.0, you can do 'paperclip' test to check engine for errors - short pins 4 and 6 on diag connector and count dash flashes. Do a search for 'paperclip' test and you'll get info ;)
Gearbox diagnostics needs a decent code reader, such as genuine Tech2 machine - what year is your car, and where are you based?
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On of our Admins, Ronald McBurger, is our resident autobox guru (misspent youth ripping Bentley boxes apart), so hopefully he'll be along shortly...
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I'll be back.........
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Thanks so far guys. Glad I found this site !! It's a 1997 R plate and I am based in Elland, West Yorkshire. To be honest I have not got a manual for the car yet so not sure where to top the box up. Just called at my local garage and the proprietor sucked through his teeth and laughed when I told him about the air flow meter probably causing it. I must admit it sounded like a load of cobblers when the guy said it to me but I'm no expert.
I would rather wait for some decent advise from you guys on here and have a bash myself than fork out my hard earned cash to a £30 per hour garage. They said it would be about £55 to suck out all the old fluid and replace it.
[smiley=dankk2.gif]
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I believe the filler plug is on the auto box itself, that means jacking up the car and supporting it on axle stands.
RonaldMcBurger will be back shortly, don't worry, he'll sort you out if anyone can.
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. They said it would be about £55 to suck out all the old fluid and replace it.
[smiley=dankk2.gif]
Ron will know best.......but only thing id say is if you suck the old oil out.....you carnt change the filter....i think Ron might advise taking the sump of to change it then you can replace the filter at the same time
cheers
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Worse case scenerio is that box is knackered. If thats the case, you should be able to pick up a known good AR25 box quite cheap (ie less than £100). I know Ronnie McB and Laidback66 have done this job a few times...
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and i have a spare ar25 box, where in the country are you sharpey?
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Worse case scenerio is that box is knackered. If thats the case, you should be able to pick up a known good AR25 box quite cheap (ie less than £100). I know Ronnie McB and Laidback66 have done this job a few times...
Doesnt Ron recommend putting a AR35 box on as they are stronger.....or is that just for oil burners?? :-/
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nope this is correct ! ar35 if its available - its in the 3 litres i think
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Right guys, lets get me teeth into this one then. Sorry to keep you hanging around. i have been occupied with the new project as well as fitting duals into my corsa.
So, airflow meter effects the gearbox now does it? Mmmmm. I don't think so. Airflow is for the ECU to gauge how much fuel to add etc etc. Nothing to do with gearbox. The autobox is basically mechanical with a bit of help from its own ECU as well.
If the car starts off in first then slips before or instead of going into second, you ahve a problem. Now. the first thing to do is check the fluid colour and level. This is done with the engine running and on a flat level. I recommend getting the passenger side on the kerb, then jack and axle stand the drivers side so you have enough room and it is level.
Start the engine, then remove the level plug on the drivers side of the gearbox near the now hot exhaust!
Fluid should just trickle out. If not, it needs topping up with ATF Dexron III. If it is trickling out, it should (in an ideal world) be ribena red. If it is slightly brownish, that is just a sign of age. But if it is really brown or worse black, you have severe build up of crap.
Anyway, first things first. Fluid level and colour then report back to us.
Next step depends on fluid colour etc. Best case, fluid and filter change, worse case, gearbox change.
If the worst happens and you need to change the box, do get an AR35 if possible. You will need to swap the bellhousings over, easy enough BUT you must work in clinically clean conditions to avoid any dirt getting in.
Gearbox change will take about the whole day and you will need two very good trolly jacks, some really strong and high stands and a good selection of tools including torx.
Lets not jump the gun, but my first gut feeling is that you need a new box.
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nope this is correct ! ar35 if its available - its in the 3 litres i think
Soz Mark....wasnt trying to loose you selling your box...infact if Mark has a good ar25 box id go for that....as you dont know what your buying from scrappies....they might offer you a refund or another if the box doesnt work.....but from what i can gather you dont want to changing the box more than once....its too much of a pain ;)
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If Mariec has an AR25, that would be good too. Just the Ar25's are harder to find in good order. You can be sure if Mark is selling it, it will be good.
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AR25 will be fine with the 2.0 - not that much power to worry the box
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Good afternoon guys. Sorry it's taken a while to reply. I had to go out and drink some of that mucky beer last night and its taken me this long to come round !! :-X
Thanks for all the help on this one. I am going to Portugal on my bike on Monday so wont have chance to try anything until I get back. I will have a look at the fluid situation first and hopefully that might have the desired effect. Not so sure I could tackle the changing of the box myself but my uncle is an ex RAF mechanic so I am sure we could change it between us. Failing that I will have to find a decent gearbox place near Halifax to do it for me.
I will let you all know how I get on when I'm back off my jollys. Right next job, sort the Busa out for my road trip.
See you soon. [smiley=vrolijk_1.gif] [smiley=dankk2.gif]
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and i have a spare ar25 box, where in the country are you sharpey?
Hi Markie. I am in Elland which is between Halifax and Huddersfield. If you still have it when I get back and I find it needs one I will gladly take it off your hands.
Much apreciated.
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Glad to hear you're going on the Suzuki - your Honda, though fun, might not be as comfy for that sort of ride.
Enjoy your trip :)
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Glad to hear you're going on the Suzuki - your Honda, though fun, might not be as comfy for that sort of ride.
Enjoy your trip :)
I use the Blade for track days cos it's not road legal. Looking forward to the trip on the Busa. Usualy go off round Europe every year. Looking forward to getting away from this bloody awfull weather we are having !! I will need a rest if i'm going to be tackling changing the gear box on the Omega :(
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I use the Blade for track days cos it's not road legal. Looking forward to the trip on the Busa. Usualy go off round Europe every year. Looking forward to getting away from this bloody awfull weather we are having !! I will need a rest if i'm going to be tackling changing the gear box on the Omega :(
Remember that the by-pass has a 50 limit! (aswell as THREE speed cameras!)
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I use the Blade for track days cos it's not road legal. Looking forward to the trip on the Busa. Usualy go off round Europe every year. Looking forward to getting away from this bloody awfull weather we are having !! I will need a rest if i'm going to be tackling changing the gear box on the Omega :(
Remember that the by-pass has a 50 limit! (aswell as THREE speed cameras!)
Ah you know Elland then ? Poor bugger ! ;D
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Ah you know Elland then ? Poor bugger ! ;D
Just the by-pass on my way to Nestles (Cruise set to 50! )
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I usually have my Snooper on and to be honest the cameras are not on more often than not but you can never be too carefull. :exclamation
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Hi Guys, it's been a while. Been to Portugal on the Busa and had a smashin time. Back to the gearbox problem now !!
Had the car to my local garage to get the Omega plugged in to see what was happening. By the way, since last time the car has started to run really badly like its on one cylinder and also chucks smoke from the back of the engine. Anyway they plugged her in and came up with the following codes which I thought might be helpful to others if i published them.
P0560 VOLTAGE MALFUNCTION - BATTERY WAS FLAT WHEN I RETURNED FROM HOLIDAY !
P0725 CRANK SENSOR
P0730 MECHANICAL GEARBOX FAULT
P1850 SHIFT SOLENOID ON GEARBOX
So it is the box thats had it. Well diagnosed Ronald. They said that the sensor will be making it run like crap and their is no point replacing it until I have the box sorted.
Made a call to my uncle who is more than happy to assist (more like me assisting him) in the replacement once I have one. So I will shortly be on the look out for an AR25 box once I have some pennies. If anyone hears of a good one thats available not too far away from Halifax then please shout me.
So there you have it. I will be making use of the guides on here to assist me in doing the box and hopefuly it will be a succesful operation.
:)