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[omegalover]

Hi, just purchased a omega 2.6 cdx auto 03 reg. it is driving me nuts. it a 2 main faults, one has diagonesd as the crankshaft sensor, however the 2nd one is the auto gearbox, when the car is cold,th car changes and drives fine, however as soon as the car warms up, the box seems to slip when stationary in driive mode to neutral. When shift from netral to drive, it takes a few seconds for it to engage and creep unless you rev it, then it jolts forward. if you leave it in drive with your foot on the brake, you can feel it engaging and disengaging.However the car drives fine and changes thru the gears once driving.
My Vauxhall main dealer has done a diagnostic check and has found no fault codes with the gearbox. They think the crankshaft sensor fault is probably impacting on the gearbox..can this be true? Also how much should I expect to pay for a replacment crankshaft sensor fitted? Thanks guys

[tunnie]

crank sensor can throw other codes, but it would not affect the gearbox. Crank sensor failing will cause the engine to die, and be difficult to restart.

I would check the ATF level on the gearbox 

[davethediver]

What he says ^^^ check ATF level, guide in maintanence section  Might not be any codes showing but could be worth a gearbox software update on a tech 2 

[Kevin Wood]

Gearbox does rely on RPM signal which is crank sensor related but more likely to be low fluid level IMHO. If the mileage is over 60K or so and there's no history of an automatic gearbox fluid change I would change the fluid, TBH.

Crank sensor needs changing ASAP as they tend to leave you standing once they fail completely so change that first before condemning the gearbox.

Guides for both of these jobs in the maintenance section.

Kevin

[omegalover]

Thanks very much guys for the advice, The car was plugged into the tech 2 by the vauxhall garage and it didnt show any codes...will the Tech 2 diagnostic have picked up a low ATF?  Also prior to going into my local delaership, a local garage had informed me that the transmission fluid can only be checked or topped up while the car is connected to the tech 2..is this true?
Many thanks for the comments folks.

[CaptainZok]

Thanks very much guys for the advice, The car was plugged into the tech 2 by the vauxhall garage and it didnt show any codes...will the Tech 2 diagnostic have picked up a low ATF?  Also prior to going into my local delaership, a local garage had informed me that the transmission fluid can only be checked or topped up while the car is connected to the tech 2..is this true?
Many thanks for the comments folks.

Your local garage is talking crap, only tool needed to check the fluid level is a spanner.

[davethediver]

Thanks very much guys for the advice, The car was plugged into the tech 2 by the vauxhall garage and it didnt show any codes...will the Tech 2 diagnostic have picked up a low ATF?  Also prior to going into my local delaership, a local garage had informed me that the transmission fluid can only be checked or topped up while the car is connected to the tech 2..is this true?
Many thanks for the comments folks.

Your local garage is talking crap, only tool needed to check the fluid level is a spanner.

And of course a Gnome helps 

[Andy H]

Thanks very much guys for the advice, The car was plugged into the tech 2 by the vauxhall garage and it didnt show any codes...will the Tech 2 diagnostic have picked up a low ATF?  Also prior to going into my local delaership, a local garage had informed me that the transmission fluid can only be checked or topped up while the car is connected to the tech 2..is this true?
Many thanks for the comments folks.

Some manufacturers (VW for example) specify that the engine should be running and the fluid at 50 degC.

Is Tech2 able to monitor the fluid temperature?

[tunnie]

Thanks very much guys for the advice, The car was plugged into the tech 2 by the vauxhall garage and it didnt show any codes...will the Tech 2 diagnostic have picked up a low ATF?  Also prior to going into my local delaership, a local garage had informed me that the transmission fluid can only be checked or topped up while the car is connected to the tech 2..is this true?
Many thanks for the comments folks.

Some manufacturers (VW for example) specify that the engine should be running and the fluid at 50 degC.

Is Tech2 able to monitor the fluid temperature?

Can monitor other temps, but not ATF

[Jimbob]

IM sure the box temp is reported in live data....

[tunnie]

IM sure the box temp is reported in live data....

don't remember seeing it when flicking through  :-/ But could well be wrong 

[Jimbob]

Ive an export of live data on my other PC....but cant get at it at the mo...

Ill post up what is reported later.

[Neil_MV6]

Here's how to check the autobox oil level....

http://www.omegaowners.com/forum/YaBB.pl?num=1152783586

 

[Kevin Wood]

IM sure the box temp is reported in live data....

Correct. However, I wouldn't regard it as critical to know the temperature! Take the car out for a brisk drive for 10 minutes and it'll be fine.

It is, however, most important that the engine is left running throughout the procedure and the car is level.

If necessary, jack up the driver's side to gain access to the level plug, add a little fluid and then lower the car to level and ensure that some drains out. If not, add a little more. Then jack up again to replace the plug. If the engine is stopped at any point while the plug is out, the fluid that's circulating in the system will pour out.

Kevin

[Kevin Wood]

.. and how was the crank sensor diagnosed if there were no fault codes reported? It almost always raises a fault code in the engine ECU. :-/

Kevin