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  #1  
Old 10-31-2008, 12:00 AM
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B service

Hey , I was looking to see if some techs on this forum can help me out.
Despite my reservations I worked on a 03 c320 for a customer. Did the B service, changed the oil, airfilters and cabin airfilter. Well ...I did it to try and help the customer save some money and since I am a technician I figured its a pretty straight foward job. Like I said I did the oil change and other stuff ...all basic. I returned the car and it was ok. A day later she is complaining that it stutters and I go and check it out. It feels like a misfire. At this point a lot of things seem to be going wrong with her car and its after I touched it. I''m expierence enough to know sometimes ...when you work on a car afterwards **** happens sometimes even though the problems are not related to what you may have done to it you know? Any who. I know the oil capacity on that car is 8 qts. I put in right about 7.5 to be safe. This wouldn''t cause the misfire type feeling would it? To me, I believe coniencidently, she has a intermintant misfire from a coil pack. Anyone expeirence this problem before? Any help would be great. I''m a import tech and working on a german car is really not my thing but I tried and now even though the work was simple enough, Im regretting even working on this car period. No MIL light or malfunction. Thanks in advance .

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  #2  
Old 10-31-2008, 12:43 AM
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No malfunction means you've pulled the OBDII codes? A misfiring coil pack should show up there.
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Old 10-31-2008, 07:35 PM
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Should have done that ..but I figured if there was no mil light ..It wouldnt shown it. Could have had a pending code. I dono, just seeing if anyone experienced anything like this before.
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Old 10-31-2008, 08:06 PM
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Location: east coast
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when you were working on the car did you keep the keep the key in the ignition all the while you were working on it?

keeping the key on the ignition - even in the off position - can run down the battery. someone confirm this

If the battery was original it may be very weak, and these cars act weird on a weak battery.
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  #5  
Old 10-31-2008, 08:35 PM
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Join Date: Sep 2002
Posts: 3,066
Make sure the air filter housing is installed properly. If, the seal around the Air Mass Sensor isn't tight, the engine will run like crap when accelerating from a stop. I've seen this happen many times, most often after the air filter elements have been replaced.

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