The diagnostic socket is located on the lower edge of the dashboard on the passenger side.
expand_moreIdling speed with automatic gearbox
2.2 with gasoline straight-4 2.2 L 145 HP at 5800 RPM, 203 N⋅m at 4000 RPM engine (2000.9–)
805–1025 rpm805–1025 rpm805–1025 rpm
Idling speed with manual gearbox
730–950 rpm730–950 rpm730–950 rpm
Minimum engine oil temperature at VET
176°F176°F80°C
expand_morePetrol exhaust gas values
CO content at idling speed
0.3 %0.3 %0.3 %
CO content at increased idling speed
0.3 %0.3 %0.3 %
Increased idling speed
2800–3200 rpm2800–3200 rpm2800–3200 rpm
Lambda sensor design
Jump type lambda sensor
Lambda value
0.97–1.03 λ0.97–1.03 λ0.97–1.03 λ
expand_moreMaximum HC content at idling
2.2 with gasoline straight-4 2.2 L 145 HP at 5800 RPM, 203 N⋅m at 4000 RPM engine (2000.9–)
100 ppm100 ppm100 ppm
Test speed for lambda sensor signal
730–950 rpm730–950 rpm730–950 rpm
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 2003 Opel Speedster 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 Speedster 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 2003 Opel Speedster you're not only saving money, but also also improving your technical skills and learning something new.