paul_mike
20th November, 2010, 10:45 PM
Hi guys, I need some help if anyone has a suggestion please do.
I'm in Canada and working on a Saturn Astra 2008 , this is a Opel Astra H in Europe . There is very few Saturn Astra here and maybe someone saw something simillar to what I'm working on.
So 2008 Astra with 1.8 liter engine with manual transmission
condition is a slight engine miss related to engine load not rpm. You could reproduced it in 1st gear slight acceleration around 3100-3200 rpm and the miss will last about 1/2 seconds that could be reproduced half of the time but another window is when you're in 3rd gear throttle around 65% like passing a other vehicle again the miss will last 1/2 seconds and this could be reproduced almost all the time. no ecm dtc , no light, no abnormal tech2 data. car is doing this condition for about 10000km with not doing better or worst. We get lucky to find a sister vehicle so we swap from the good car to the bad one the following components but still the condition persist.
spark plugs,ignition coil , cranshaft sensor, both camshaft sensor, maf sensor, the intake manifold assembly with the throttle plate, knock sensor, evap solenoid ,engine controller , fuel injectors with rail.
we check the fuel pressure, inspect the camshaft timing vs belt and crankshaft ,compression is ok
any help is welcome
Paul
I'm in Canada and working on a Saturn Astra 2008 , this is a Opel Astra H in Europe . There is very few Saturn Astra here and maybe someone saw something simillar to what I'm working on.
So 2008 Astra with 1.8 liter engine with manual transmission
condition is a slight engine miss related to engine load not rpm. You could reproduced it in 1st gear slight acceleration around 3100-3200 rpm and the miss will last about 1/2 seconds that could be reproduced half of the time but another window is when you're in 3rd gear throttle around 65% like passing a other vehicle again the miss will last 1/2 seconds and this could be reproduced almost all the time. no ecm dtc , no light, no abnormal tech2 data. car is doing this condition for about 10000km with not doing better or worst. We get lucky to find a sister vehicle so we swap from the good car to the bad one the following components but still the condition persist.
spark plugs,ignition coil , cranshaft sensor, both camshaft sensor, maf sensor, the intake manifold assembly with the throttle plate, knock sensor, evap solenoid ,engine controller , fuel injectors with rail.
we check the fuel pressure, inspect the camshaft timing vs belt and crankshaft ,compression is ok
any help is welcome
Paul