W221 MB S65 AMG 2009 model RPM changing
06-21-2018, 07:40 AM
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Mercedes W221 S65
W221 MB S65 AMG 2009 model RPM changing
Hi,
After I changed both ignition coils, 24 spark plugs and the transformer for the new ones my W221 MB S65 AMG 2009 started changing RPM (as if an electricity goes off for a second and comes back again) and it happens for several times a day not every time. Once it happens it feels like the car slightly vibrates. After that I was told to change the throttle body to have the best results may be but unfortunately the problem still persists. By the way I only use the 98 RON and change its engine and gearbox oil with filters of course every 3000 km. The car has 55000 miles. I have also changed the air filters, all belts and pulleys, engine and gearbox mounts.
Please help!
regards
Stephan
After I changed both ignition coils, 24 spark plugs and the transformer for the new ones my W221 MB S65 AMG 2009 started changing RPM (as if an electricity goes off for a second and comes back again) and it happens for several times a day not every time. Once it happens it feels like the car slightly vibrates. After that I was told to change the throttle body to have the best results may be but unfortunately the problem still persists. By the way I only use the 98 RON and change its engine and gearbox oil with filters of course every 3000 km. The car has 55000 miles. I have also changed the air filters, all belts and pulleys, engine and gearbox mounts.
Please help!
regards
Stephan
