The diagnostic socket is in the middle of central panel under the cover.
Exhaust gas recirculation (EGR)
Yes
expand_moreIdling speed with automatic gearbox
1.8 16V with gasoline straight-4 1.8 L 114 HP at 5400 RPM, 170 N⋅m at 3400 RPM engine (1998.9–2000.9)
730–960 rpm730–960 rpm730–960 rpm
2.0 16V with gasoline straight-4 2.0 L 134 HP at 5600 RPM, 185 N⋅m at 4000 RPM engine (1998.9–2005.1)
730–960 rpm730–960 rpm730–960 rpm
2.0 DI with diesel straight-4 2.0 L 80 HP at 4300 RPM, 185 N⋅m at 1800 RPM engine (1998.9–2005.1)
760–860 rpm760–860 rpm760–860 rpm
2.0 DI with diesel straight-4 2.0 L 80 HP engine (1998.9–2005.1)
760–860 rpm760–860 rpm760–860 rpm
All other modifications
700–930 rpm700–930 rpm700–930 rpm
expand_moreIdling speed with manual gearbox
1.2 16V with gasoline straight-4 1.2 L 64 HP at 5600 RPM, 110 N⋅m at 4000 RPM engine (1998.9–2000.9)
700–940 rpm700–940 rpm700–940 rpm
1.4 16V with gasoline straight-4 1.4 L 89 HP at 6000 RPM, 125 N⋅m at 4000 RPM engine (1998.9–2005.1)
700–930 rpm700–930 rpm700–930 rpm
1.4 16V with gasoline straight-4 1.4 L 89 HP engine (1998.9–2005.1)
700–930 rpm700–930 rpm700–930 rpm
1.6 16V with gasoline straight-4 1.6 L 99 HP at 5800 RPM, 135 N⋅m at 3400 RPM engine (1998.9–2005.1)
700–930 rpm700–930 rpm700–930 rpm
1.6 16V with gasoline straight-4 1.6 L 99 HP at 6000 RPM, 150 N⋅m at 3600 RPM engine (1998.9–2005.1)
700–930 rpm700–930 rpm700–930 rpm
1.6 with gasoline straight-4 1.6 L 74 HP at 5200 RPM, 128 N⋅m at 2800 RPM engine (1998.9–2000.9)
780–1000 rpm780–1000 rpm780–1000 rpm
1.7 TD with diesel straight-4 1.7 L 67 HP at 4500 RPM, 132 N⋅m at 2400 RPM engine (1998.9–2000.8)
780–900 rpm780–900 rpm780–900 rpm
1.8 16V with gasoline straight-4 1.8 L 114 HP at 5400 RPM, 170 N⋅m at 3400 RPM engine (1998.9–2000.9)
730–960 rpm730–960 rpm730–960 rpm
2.0 16V with gasoline straight-4 2.0 L 134 HP at 5600 RPM, 185 N⋅m at 4000 RPM engine (1998.9–2005.1)
730–960 rpm730–960 rpm730–960 rpm
2.0 DI with diesel straight-4 2.0 L 80 HP at 4300 RPM, 185 N⋅m at 1800 RPM engine (1998.9–2005.1)
760–860 rpm760–860 rpm760–860 rpm
2.0 DI with diesel straight-4 2.0 L 80 HP engine (1998.9–2005.1)
760–860 rpm760–860 rpm760–860 rpm
All other modifications
720–880 rpm720–880 rpm720–880 rpm
expand_moreMinimum engine oil temperature at VET
All other modifications
176°F176°F80°C
expand_morePetrol exhaust gas values
expand_moreCO content at idling speed
All other modifications
0.5 %0.5 %0.5 %
expand_moreCO content at increased idling speed
All other modifications
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
Maximum HC content at idling
100 ppm100 ppm100 ppm
Petrol conditioning time
30 s30 s30 s
expand_moreTest speed for lambda sensor signal
1.6 with gasoline straight-4 1.6 L 74 HP at 5200 RPM, 128 N⋅m at 2800 RPM engine (1998.9–2000.9)
780–1000 rpm780–1000 rpm780–1000 rpm
All other modifications
700–930 rpm700–930 rpm700–930 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 1999 Opel Astra 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 Astra 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 1999 Opel Astra Sedan you're not only saving money, but also also improving your technical skills and learning something new.