To make a very very long -and ongoing story a bit shorter..
The classic trouble with stumbling idle - excessive fuel consumption - surging on acceleration..
Tested/cleaned/replaced OVP, IAC, Lambda sensor, cat. conv and so on..
Info:
In Denmark you have to get any car over 5 years of age, checked thoroughly every other year. Also CO-testet! If your car doesnt pass the test you get a month to fix it. If it still doesn't pass, they can take you licence plates and the car is no longer legal to drive..
-And of course you have to pay $100 for each try.
The thing is.. The Benz is now driving flawlessly. All the above mentioned problems are gone -except whenever i get within a few miles from the 'car inspection shop'..
I have now tried 3 times. And every time i get near the shop (two different shops actually), the Benz starts to act up.. -Surging, stumbling, using excessive amounts of fuel. And of course the CO-test fails with flyin' colors.
The rest of the week i can take it to work and it will drive perfect..
I simply don't get it. It makes my think of the movie 'Christine'.
Freestyler