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[Brett2000]

Hi Guys, 

First post - but I've been lurking for awhile

I have a December 2000 2.2CD automatic, done about 130k and is generally pretty tidy. (Picked it up at the weekend)

One issue I have noticed is that after about 5mins of driving the EML light comes on (bottom left of the dash, car with a spanner through it) - now, even with this light active I am getting no codes on the OBDII readers that I have... there was one stored code, (p1781) which has not reappeared since I cleared it.

The car tends to drive fine, has the occasional issue from cold, (rough idle and occasionally dies when cold) but I'm pretty confident that is down to the idle control.  (I will be replacing pretty much every service item this weekend)

Lastly, I don't yet have a service manual - so if anyone can help me with the following I would be eternally grateful:

1) I assume the autobox has no dipstick, are they prone to loosing fluid?  How much does the box hold?
2) Does anyone have the spec on the timing belt change?
3) Does anyone have a workshop manual for the 2000+ model car that I can buy, beg, borrow, steal, download?

Many thanks  8-)

[Welung666]

You could do with a proper tech2 session to try and figure out why the EML is on, I think Kevin is the closest to you.

1) No dipstick, supposed to be a sealed for life unit but you can change the oil and filter. They hold 9 litres but the torque converter will hold onto about half of that.

2) Cam belt should be changed every 40K or 4 years, also advisable to change the waterpump at the same time as it is cam belt driven.

3) No, haynes never did a manual for the facelifts. The earlier book will cover the general gist of things as there isn't much difference in the 2.0 and 2.2. Otherwise you have us lot

[Brett2000]

If it hasn't gone after I've replaced, cleaned and screamed at everything I don't like the look of, I'll man up and get someone with the proper software to have a look    (Not that I'm at all stubborn)

[davethediver]

Good service, clean the breathers and throttle bodies, italian tune up (just for the fun of it). Hopefully be ok after that.

Autobox should have oil changed every 60K or so although GM say its sealed for life, guide in maintenance section for that. If yo've just bought it may i suggest a couple of quick 500-1000 mile oil changes just to clean out the old shit stuff that will be in there.

EDIT - P1781 is a CANBUS error code non specific to the 2.2 but common when the cam sensor starts to play up, worth getting a proper reading but if it turns out to be the cam sensor (which can throw up some strange errors) please please buy a genuine one from a dealership easy to change

[Bear146]

Before you rush into expensive investigations it is worth doing a full reboot of the ECUs so that they remap all their sensors, but only if you have the radio pass code!.  Follow the instructions in the owner’s handbook to disconnect the battery, leave it disconnected overnight, reconnect in the morning, reinitialise the electric windows, radio, and climate control servos as directed in the handbook and restart.  This may resolve the problem with the transient “spanner”  EML that you are experiencing.

The handbook states that the “spanner” EML is reporting emissions problems.   However my understanding is that the Omega ECU will flash up a transient out of range warning which is then erased if it does not persists, but the EML stays illuminated until the next restart.  This would explain why you have nothing on the OBD reader.

I had a similar problem with the “spanner” EML on my Z22XE that was cured by changing the engine coolant temperature [ECT] sensor at the rear of the engine – the one with two wires.  Beru who make sensors state that the negative temperature coefficient sensors used for this sensor show steep changes in voltage readings rather than a smooth curve when the probe starts to decay.  This confuses older ECUs which do not have a plausibility check algorithm since the reading is within range, but incorrect.  I am slightly paranoid about this sensor and believe it is the cause of a lot of niggling problems on the Omega that are difficult to diagnose.

The ECT sensor is easily changed once you removed the plastic scuttle under the windscreen.  A new one costs about £11 at Eurocarparts.

The camshaft position sensor is also a known problem, but Siemens claim that this DTC can often be caused on Vauxhalls by a warn cam belt tensioner.  This DTC is reported by the “engine” EML, not the “spanner”, it clears the EML after 40 restarts without the problem recurring but is retained in the memory.  Vauxhall dropped the cambelt change interval on the 2.2 from 80K to 40K after a lot snapped after 60K, If you don’t have an invoice for a recent change I would make this a priority.

The camshaft position sensor is also easy to change and an original GM part can be obtained from www.vauxcentre.co.uk for £67.50 including delivery.  See:
http://www.omegaowners.com/forum/YaBB.pl?num=1269023974   for an excellent pictorial guide to changing the camshaft sensor 

[Auto Addict]

Before you rush into expensive investigations it is worth doing a full reboot of the ECUs so that they remap all their sensors, but only if you have the radio pass code!.  Follow the instructions in the owner’s handbook to disconnect the battery, leave it disconnected overnight, reconnect in the morning, reinitialise the electric windows, radio, and climate control servos as directed in the handbook and restart.  This may resolve the problem with the transient “spanner”  EML that you are experiencing.

The handbook states that the “spanner” EML is reporting emissions problems.   However my understanding is that the Omega ECU will flash up a transient out of range warning which is then erased if it does not persists, but the EML stays illuminated until the next restart.  This would explain why you have nothing on the OBD reader.

I had a similar problem with the “spanner” EML on my Z22XE that was cured by changing the engine coolant temperature [ECT] sensor at the rear of the engine – the one with two wires.  Beru who make sensors state that the negative temperature coefficient sensors used for this sensor show steep changes in voltage readings rather than a smooth curve when the probe starts to decay.  This confuses older ECUs which do not have a plausibility check algorithm since the reading is within range, but incorrect.  I am slightly paranoid about this sensor and believe it is the cause of a lot of niggling problems on the Omega that are difficult to diagnose.

The ECT sensor is easily changed once you removed the plastic scuttle under the windscreen.  A new one costs about £11 at Eurocarparts.

The camshaft position sensor is also a known problem, but Siemens claim that this DTC can often be caused on Vauxhalls by a warn cam belt tensioner.  This DTC is reported by the “engine” EML, not the “spanner”, it clears the EML after 40 restarts without the problem recurring but is retained in the memory.  Vauxhall dropped the cambelt change interval on the 2.2 from 80K to 40K after a lot snapped after 60K, If you don’t have an invoice for a recent change I would make this a priority.

The camshaft position sensor is also easy to change and an original GM part can be obtained from www.vauxcentre.co.uk for £67.50 including delivery.  See:
http://www.omegaowners.com/forum/YaBB.pl?num=1269023974   for an excellent pictorial guide to changing the camshaft sensor 

My recomendation is to only buy a camshaft sensor from a genuine Vauxhall Dealer, I would not recomend buying one from any where else.

Others have, and regreted it.

[TheBoy]

I would seriously consider getting it over to Kevin Wood for a full diags session.  Cheap readers can be troublesome, esp chinese clones of proper tools.  Changing parts on a hunch will simply lead to more 'unknowns' being introduced, clouding proper diagnostics.

I probably wouldn't bother with the battery disconnection thing either, can't see that helping...

[arthill]

Owners handbook closest thing to manual for 2.2. many good guides in "HOW TO" section of this forum. If you dont have handbook PM me with EMAIL address  and i'll send you copy.