Misfire and flashing CEL
#1
Misfire and flashing CEL
Guys,
Car is misfiring and the CEL is flashing. Took the car to the local MB service centre, technician stated car is misfiring due to exhaust as I have LTH and full exhaust.
They cleared faults and called me to collect, 5 mins down the road the car does the same thing.
I took it back and they cleared the faults and the same thing happened when I was 5 mins down the road.
I replaced the spark plugs today and it is still the same.
Anyone have any suggestions as I am really bummed over it!
Thanks in advance for any help.
Car is misfiring and the CEL is flashing. Took the car to the local MB service centre, technician stated car is misfiring due to exhaust as I have LTH and full exhaust.
They cleared faults and called me to collect, 5 mins down the road the car does the same thing.
I took it back and they cleared the faults and the same thing happened when I was 5 mins down the road.
I replaced the spark plugs today and it is still the same.
Anyone have any suggestions as I am really bummed over it!
Thanks in advance for any help.
#7
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Vivid Racing '09 C63 AMG
The O2 sensor should be a little thing that attaches to your exhaust. The misfire shouldn't be related to your LTH. Either the sensor is going bad, or you could have an intake manifold leak like I did.
First, check out the code it's throwing try clearing it. It if comes back on, try replacing the O2 sensor. Hopefully that'll resolve it.
First, check out the code it's throwing try clearing it. It if comes back on, try replacing the O2 sensor. Hopefully that'll resolve it.
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#8
Guys,
Car is misfiring and the CEL is flashing. Took the car to the local MB service centre, technician stated car is misfiring due to exhaust as I have LTH and full exhaust.
They cleared faults and called me to collect, 5 mins down the road the car does the same thing.
I took it back and they cleared the faults and the same thing happened when I was 5 mins down the road.
I replaced the spark plugs today and it is still the same.
Anyone have any suggestions as I am really bummed over it!
Thanks in advance for any help.
Car is misfiring and the CEL is flashing. Took the car to the local MB service centre, technician stated car is misfiring due to exhaust as I have LTH and full exhaust.
They cleared faults and called me to collect, 5 mins down the road the car does the same thing.
I took it back and they cleared the faults and the same thing happened when I was 5 mins down the road.
I replaced the spark plugs today and it is still the same.
Anyone have any suggestions as I am really bummed over it!
Thanks in advance for any help.
#11
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07 E63 + 07 CLK63CAB
Tunes and trouble seem to be pretty tight on these forums! Enjoy, is the extra virtually useless power actually worth the constant visits to the dealer or tune shop, where are you guys putting down all this HP? Just sayin! In stock form only, you cannot put the power down without lighting up the rears. What is the goal high horsepower while sacrificing torque? Only one coffee rant
GCK-063 you need the code to actually assist you in finding the issue, OBD2 bought or sourced at an auto parts shop will help. Possible bad o2 sensor or burnt wiring from the headers but without codes you are just throwing money away.
GCK-063 you need the code to actually assist you in finding the issue, OBD2 bought or sourced at an auto parts shop will help. Possible bad o2 sensor or burnt wiring from the headers but without codes you are just throwing money away.
#13
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07 E63 + 07 CLK63CAB
Probably not versed well in stop light antics but it seems to me that driving a high spirited AMG the way the engineers designed it to run then let somebody schooled in software go and disrupt the status quo of a German thought process, well... That being said in the years with our AMG's they continue to run just as they did the first day out of the dealership, minimal oil consumption, 1 set of tires each, 1 AC compressor, battery for each and no CEL's, both 07's.
#15
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Vivid Racing '09 C63 AMG
Did it not go away after you restarted the car? When I had misfires, it was just a glitch. I shut off the engine and it was fine. When I had a blinking CEL, that was due to my intake manifold gaskets that needed to be replaced. It was causing leaks and running super rich. The O2 sensors kept trying to correct it until it couldn't any longer.
#17
Probably not versed well in stop light antics but it seems to me that driving a high spirited AMG the way the engineers designed it to run then let somebody schooled in software go and disrupt the status quo of a German thought process, well... That being said in the years with our AMG's they continue to run just as they did the first day out of the dealership, minimal oil consumption, 1 set of tires each, 1 AC compressor, battery for each and no CEL's, both 07's.
#18
MBWorld Fanatic!
how about bad gas? or weak fuelpumps? So did the dealer actually say they ever fixed the car? saying you have exhaust and headers that are causing the misfire.... so they cleared the codes doesnt sound like anything got fixed. Sounds more like thats there diagnosis not a repair. Ofcourse the plugs are going to look fouled out - its misfiring that doesnt tell you anything. other than the misfires are only taking place on those 5 cylinders. which im sure the codes would reflect. first thing ecu is going to do with a misfire is dump fuel and retard timing than it will cut the injector off entirely so it doesnt use that cylinder anymore.
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Nate GZ (01-09-2022)
#19
Member
Hey guys,
Im having same issue as well but mine threw a code. Went to the dealer and diagnosed it. Code was 0168 (p0221) and 0164 (p0121). So they changed my throttle pedal and bank 2 sensor 2 sensor. Was driving again overtakes downshifted to 3rd gear and wont shift to 4th and CEL came back again. Same code. Any idea? My car died while im driving lucky i was at the slow lane. Restarted the car. Now i have rough idle.
Im having same issue as well but mine threw a code. Went to the dealer and diagnosed it. Code was 0168 (p0221) and 0164 (p0121). So they changed my throttle pedal and bank 2 sensor 2 sensor. Was driving again overtakes downshifted to 3rd gear and wont shift to 4th and CEL came back again. Same code. Any idea? My car died while im driving lucky i was at the slow lane. Restarted the car. Now i have rough idle.
#21
MBWorld Fanatic!
to add - 1 set of tires on an 07'? no wonder you are bagging on people with mods. if you're getting over 6k miles per set of rears you should reconsider not paying extra for the amg.