Check engine light
#1
Junior Member
Thread Starter
Check engine light
I have a 2004 c230 kompressor sedan...
The check engine light came on, ran the obd2 scanner said p0303.. cylinder 3 misfire... Changed out the spark plugs and wires.... reset the check engine light...
Light came back on... can ran rough at idle..... after cooling the car down and turning it back on, the car ran fine....... the check engine light went away on its own few days later... only to return the next day...
I notice the light comes on when the car is idling.. the car shakes at low rpms.... Once i shut the car off and restart it, the check engine light is still on but runs normally.....
Any suggestions or ideas??? already did the wires, plugs...
thanks in advance! The car has about 58k miles...
The check engine light came on, ran the obd2 scanner said p0303.. cylinder 3 misfire... Changed out the spark plugs and wires.... reset the check engine light...
Light came back on... can ran rough at idle..... after cooling the car down and turning it back on, the car ran fine....... the check engine light went away on its own few days later... only to return the next day...
I notice the light comes on when the car is idling.. the car shakes at low rpms.... Once i shut the car off and restart it, the check engine light is still on but runs normally.....
Any suggestions or ideas??? already did the wires, plugs...
thanks in advance! The car has about 58k miles...
#5
Junior Member
Thread Starter
well besides changing the spark plugs and wires.. i have not done anything because the light has gone off now for a few days now... So i think as long as it stays off i'll wait until the next maintenance to get it checked out..
I'm very sorry to hear about your mishap with your cylinder.. i do agree mercedes does seem to have more problems than more simple cars.. I have had a few hondas that never had any problems ever...
I'm very sorry to hear about your mishap with your cylinder.. i do agree mercedes does seem to have more problems than more simple cars.. I have had a few hondas that never had any problems ever...
#6
MBWorld Fanatic!
I just picked up a P0420 code today. Time to replace at least the O2 sensor that is in front of the cat first to see if it clears. 50,500 miles on it, so I guess its due.
#7
Junior Member
Thread Starter
well i took the car to the dealership finally.. luckily i did.. I didnt know my car was still under warranty...
Anyways they ended up doing alot of stuff... pretty much almost like a new engine.. runs smooth now!!!!!! I'm very glad i took it there and i'm very pleased!!!
Anyways they ended up doing alot of stuff... pretty much almost like a new engine.. runs smooth now!!!!!! I'm very glad i took it there and i'm very pleased!!!
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#8
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Join Date: Dec 2004
Location: NYC
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2005 C320 4Matic
check engine light occurred on thursday 5/07
dealer replaced left catalyst on monday 5/12 (code p207f-001)
check engine light back on tuesday 5/13
dealer ordered O2 sensor on thursday 5/15
O2 sensor to be replaced friday 5/16
dealer replaced left catalyst on monday 5/12 (code p207f-001)
check engine light back on tuesday 5/13
dealer ordered O2 sensor on thursday 5/15
O2 sensor to be replaced friday 5/16
Last edited by raunen; 05-16-2008 at 12:59 PM.
#9
Junior Member
Did the o2 sensor fix your problem? Which one did you replace?