in your garage to make future searches easy.

Condition Value
expand_moreDiesel exhaust gas values
expand_moreCut-off control speed
1.9 CDTI with diesel straight-4 1.9 L 118 HP engine (2005.8–) 49005180 rpm
2.2 DTI 16V with diesel straight-4 2.2 L 115 HP at 4000 RPM, 270 N⋅m at 1500 RPM engine (2003.5–2008.6) 48005100 rpm
All other modifications 49005100 rpm
Diesel conditioning gas injections 5
expand_moreDiesel conditioning speed
1.9 CDTI with diesel straight-4 1.9 L 118 HP engine (2005.8–) 5100 rpm
expand_moreMaximum K-value
1.9 CDTI with diesel straight-4 1.9 L 118 HP engine (2005.8–) 1.3 1/m
2.0 DTI with diesel straight-4 2.0 L 99 HP at 4300 RPM, 230 N⋅m at 1950 RPM engine (2003.5–) 1.5 1/m
2.2 DTI 16V with diesel straight-4 2.2 L 115 HP at 4000 RPM, 270 N⋅m at 1500 RPM engine (2003.5–2008.6) 1.9 1/m
2.2 DTI with diesel straight-4 2.2 L 123 HP engine (2003.5–) 1.6 1/m
3.0 V6 CDTI with diesel V6 3.0 L 174 HP at 4000 RPM, 350 N⋅m at 1800 RPM engine (2003.5–) 1.4 1/m
3.0 V6 CDTI with diesel V6 3.0 L 181 HP engine (2005.9–) 0.5 1/m
expand_moreMinimum coolant temperature at AU
3.0 V6 CDTI with diesel V6 3.0 L 181 HP engine (2005.9–) 140°F
expand_moreGeneral exhaust gas values
Diagnostic socket location The diagnostic socket is located in
the central panel under the
ashtray.
Exhaust gas recirculation (EGR) Yes
expand_moreIdling speed with automatic gearbox
Opel diesel straight-4 2.2 L Y 22 DTR 123 HP 750950 rpm
Opel gasoline straight-4 2.2 L Z 22 YH 153 HP 630850 rpm
Opel diesel V6 3.0 L Y 30 DT 174 HP at 4000 RPM, 350 N⋅m at 1800 RPM 630730 rpm
Opel gasoline V6 3.2 L Z 32 SE 208 HP 580800 rpm
Opel gasoline V6 2.8 L Z 28 NEL 227 HP 600950 rpm
expand_moreIdling speed with manual gearbox
Opel diesel straight-4 2.2 L Y 22 DTR 115 HP at 4000 RPM, 270 N⋅m at 1500 RPM 720880 rpm
Opel gasoline straight-4 1.8 L Z 18 XE 121 HP at 6000 RPM, 165 N⋅m at 4600 RPM 620850 rpm
Opel diesel straight-4 2.2 L Y 22 DTR 123 HP 750950 rpm
Opel gasoline straight-4 2.2 L Z 22 YH 153 HP 630850 rpm
Opel gasoline straight-4 2.0 L Z 20 NET 173 HP at 5500 RPM, 265 N⋅m at 2500 RPM 750900 rpm
Opel diesel V6 3.0 L Y 30 DT 174 HP at 4000 RPM, 350 N⋅m at 1800 RPM 630730 rpm
Opel gasoline V6 3.2 L Z 32 SE 208 HP 580800 rpm
Opel gasoline V6 2.8 L Z 28 NEL 227 HP 600950 rpm
Opel diesel straight-4 2.0 L Y 20 DTH 99 HP at 4300 RPM, 230 N⋅m at 1950 RPM 750950 rpm
expand_moreMinimum engine oil temperature at VET
All Opel gasoline V6 2.8 L Z 28 NEL engines 140°F
All other modifications 176°F
expand_morePetrol exhaust gas values
CO content at idling speed 00.5 %
expand_moreCO content at increased idling speed
All Opel gasoline straight-4 1.8 L Z 18 XER engines 0.2 %
All Opel gasoline V6 2.8 L Z 28 NEL engines 0.2 %
All other modifications 0.3 %
Increased idling speed 28003200 rpm
Lambda sensor design Jump type lambda sensor
Lambda value 0.971.03 λ
Petrol conditioning time 30 s
expand_moreTest speed for lambda sensor signal
All Opel gasoline straight-4 1.8 L Z 18 XE engines 620850 rpm
All Opel gasoline straight-4 2.0 L Z 20 NET engines 680900 rpm
All Opel gasoline straight-4 2.2 L Z 22 YH engines 680900 rpm
All Opel gasoline V6 3.2 L Z 32 SE engines 680900 rpm
All other modifications 600950 rpm
expand_moreVoltage swing at test speed
All Opel gasoline straight-4 1.8 L Z 18 XER engines 0.3 V
More than
All Opel gasoline V6 2.8 L Z 28 NEL engines 0.3 V
All other modifications 0.30.6 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 2005 Opel Signum 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.

Conquer your fears and never give up!

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 Signum 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 2005 Opel Signum you're not only saving money, but also also improving your technical skills and learning something new.

2005 Opel Signum generations

In 2005 Opel offered 2 generations of the Signum. Emission may vary in different generations. Be sure that you are looking at the rigt modification.

Opel Signum A model years

Units:
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