The diagnostic socket is at the lower edge of the dashboard on the driver's side.
expand_moreIdling speed with automatic gearbox
2.0 16V with gasoline straight-4 2.0 L 134 HP at 5600 RPM, 185 N⋅m at 4000 RPM engine (1994.3–1999.9)
670–1030 rpm670–1030 rpm670–1030 rpm
2.0 with gasoline straight-4 2.0 L 114 HP at 5400 RPM, 172 N⋅m at 2800 RPM engine (1994.3–1999.9)
670–1030 rpm670–1030 rpm670–1030 rpm
2.5 V6 with gasoline V6 2.5 L 168 HP at 6000 RPM, 227 N⋅m at 3200 RPM engine (1994.3–2000.9)
570–730 rpm570–730 rpm570–730 rpm
3.0 V6 with gasoline V6 3.0 L 208 HP engine (1994.4–2001.2)
570–730 rpm570–730 rpm570–730 rpm
All other modifications
650–850 rpm650–850 rpm650–850 rpm
expand_moreIdling speed with manual gearbox
2.0 16V with gasoline straight-4 2.0 L 134 HP at 5600 RPM, 185 N⋅m at 4000 RPM engine (1994.3–1999.9)
670–1030 rpm670–1030 rpm670–1030 rpm
2.0 with gasoline straight-4 2.0 L 114 HP at 5400 RPM, 172 N⋅m at 2800 RPM engine (1994.3–1999.9)
670–1030 rpm670–1030 rpm670–1030 rpm
2.5 TD with diesel straight-6 2.5 L 129 HP at 4500 RPM, 250 N⋅m at 2200 RPM engine (1994.4–2003.7)
650–850 rpm650–850 rpm650–850 rpm
2.5 TD with diesel straight-6 2.5 L 129 HP at 4500 RPM, 250 N⋅m at 2200 RPM engine (1994.4–2003.7)
650–850 rpm650–850 rpm650–850 rpm
2.5 TD with diesel straight-6 2.5 L 129 HP engine (1994.4–2003.7)
650–850 rpm650–850 rpm650–850 rpm
2.5 V6 with gasoline V6 2.5 L 168 HP at 6000 RPM, 227 N⋅m at 3200 RPM engine (1994.3–2000.9)
570–730 rpm570–730 rpm570–730 rpm
3.0 V6 with gasoline V6 3.0 L 208 HP engine (1994.4–2001.2)
570–730 rpm570–730 rpm570–730 rpm
Minimum engine oil temperature at VET
176°F176°F80°C
expand_morePetrol exhaust gas values
expand_moreCO content at idling speed
All other modifications
0.5 %0.5 %0.5 %
For automatic gearboxes starting from model year 2001, the transmission control unit must be updated before carrying out the first exhaust gas test.
CO content at increased idling speed
0.3 %0.3 %0.3 %
For automatic gearboxes starting from model year 2001, the transmission control unit must be updated before carrying out the first exhaust gas test.
Increased idling speed
2800–3200 rpm2800–3200 rpm2800–3200 rpm
For automatic gearboxes starting from model year 2001, the transmission control unit must be updated before carrying out the first exhaust gas test.
Lambda sensor design
Jump type lambda sensor
Lambda value
0.97–1.03 λ0.97–1.03 λ0.97–1.03 λ
Maximum HC content at idling
100 ppm100 ppm100 ppm
For automatic gearboxes starting from model year 2001, the transmission control unit must be updated before carrying out the first exhaust gas test.
Voltage swing at test speed
0.3–0.6 V0.3–0.6 V0.3–0.6 V
To reduce environment impact and pass government inspections keep emission parameters at the level prescribed by Opel.
Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 1994 Opel Omega Sedan user's manual. Keep in mind that all information here is provided “as is” without any warranty of any kind.
Before doing any DIY service please check your insurance policy and Opel warranty policy for your region. In some regions DIY service may invalidate your warranty.
DIY car service is not as difficult as it looks like and it might save you thousands of dollars per year. It might be even fun and a good thing to do with your kids on a weekend to teach them how basic machinery works. It's really hard to screw something up and damage your car permanently if you use right tools, follow Opel Omega Sedan service manual and use right parts and fluids in prescribed amounts. Even modern cars stuffed with electronics can be serviced in your garage or even in your driveway. Changing engine oil, brake fluid, ATF, replacing brake pads, and etc. It's all may be done by yourself in a mater of a couple of hours.
Doing basic service for your 1994 Opel Omega Sedan you're not only saving money, but also also improving your technical skills and learning something new.
1994 Opel Omega Sedan generations
In 1994 Opel offered 2 generations of the Omega Sedan. Emission may vary in different generations. Be sure that you are looking at the rigt modification.