I think my coilpack packed it in
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MBWorld Fanatic!
Joined: Jun 2009
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2015 Challenger Hellcat, 2023 Ram 3500, 2005 E55 Wagon, 2019 GLC63s
I think my coilpack packed it in
I was driving home when the check engine light came on. Pulled up to a re light and the car idled funny and it was running extremely rich with black smoke coming out the exhaust. I was a couple of blocks away from my indie shop so I took it there. They're going to scan it this week. What do you guys think happened. It sounds and feels like it's running on 6cylinders with smoke only coming out one exhaust pipe. The check engine light doesn't reset by cycling the ignition.
The next day The tech scanned it and he's getting misfire codes on both sides. This morning it wouldn't start and he's worried it's hydro locked. He's going to pull the plugs. He finds it weird that both sides packed it in at the same time. Do you guys think it's the transformer or the coil packs or both?
R.K.
The next day The tech scanned it and he's getting misfire codes on both sides. This morning it wouldn't start and he's worried it's hydro locked. He's going to pull the plugs. He finds it weird that both sides packed it in at the same time. Do you guys think it's the transformer or the coil packs or both?
R.K.
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Joined: Oct 2008
Posts: 179
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From: Chicago, Naperville area
2005 Mercedes S600, 2004 Mercedes E500 4-Matic, 2002 Mercedes C32 AMG, 2001 Trans-Am WS-6
Bummer! I'd start with the coil packs before the voltage regulator (that rarely goes out) and also replace all 24 spark plugs while they are off. Mine went out as a pair within a month of each other, as have a few other guys, but I'd say replace one and see what happens first. The misfire may be across both banks, but usually there is a consistent cylinder that is misfiring.
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Joined: Feb 2012
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not sure yet
I had the same problem, both banks went and ignitor module went aswell . £4k down the road every is fine now, mine started with a simple spark plug change. Good luck , I noticed you have a supra aswell. I have a single 6sp wide body myself, running 700hp with built engine . Great cars, pure raw adrenaline rush for me every time I drive it.
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Joined: May 2008
Posts: 108
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From: Denmark
SL65 AMG, X5-4.8i M-Sport, 530D, 528i
It's very rare both coil packs should go bad, then it's more likely to be the ignition power supply.
Reset the ECU error codes and start the engine again (if possible), then read codes again. Should indicate which cylinders are really affected.
I don't remember which cylinders are in which coil pack, but can check this if you like?
Changing spark plugs on these cars is a risky business, as If one/shop do it wrong they brake/crack the coil pack which will show up later as a faulty unit.
RN
Reset the ECU error codes and start the engine again (if possible), then read codes again. Should indicate which cylinders are really affected.
I don't remember which cylinders are in which coil pack, but can check this if you like?
Changing spark plugs on these cars is a risky business, as If one/shop do it wrong they brake/crack the coil pack which will show up later as a faulty unit.
RN
Thread Starter
MBWorld Fanatic!
Joined: Jun 2009
Posts: 1,559
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2015 Challenger Hellcat, 2023 Ram 3500, 2005 E55 Wagon, 2019 GLC63s
It's very rare both coil packs should go bad, then it's more likely to be the ignition power supply.
Reset the ECU error codes and start the engine again (if possible), then read codes again. Should indicate which cylinders are really affected.
I don't remember which cylinders are in which coil pack, but can check this if you like?
Changing spark plugs on these cars is a risky business, as If one/shop do it wrong they brake/crack the coil pack which will show up later as a faulty unit.
RN
Reset the ECU error codes and start the engine again (if possible), then read codes again. Should indicate which cylinders are really affected.
I don't remember which cylinders are in which coil pack, but can check this if you like?
Changing spark plugs on these cars is a risky business, as If one/shop do it wrong they brake/crack the coil pack which will show up later as a faulty unit.
RN
That's my indie tech concluded. I have the ignition transformer on order as we speak.
R.K.
Member
Joined: May 2008
Posts: 108
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From: Denmark
SL65 AMG, X5-4.8i M-Sport, 530D, 528i
That sounds ok to me and also the price of the power supply is much lower than the coil pack.
It's very rear that the coil packs will fail on later models (after 2005) except if the shop cracks the coil packs during removal for service of the engine. My personal opinion is that this is the majority reasons they fail.
It's very rear that the coil packs will fail on later models (after 2005) except if the shop cracks the coil packs during removal for service of the engine. My personal opinion is that this is the majority reasons they fail.
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Thread Starter
MBWorld Fanatic!
Joined: Jun 2009
Posts: 1,559
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2015 Challenger Hellcat, 2023 Ram 3500, 2005 E55 Wagon, 2019 GLC63s
That sounds ok to me and also the price of the power supply is much lower than the coil pack.
It's very rear that the coil packs will fail on later models (after 2005) except if the shop cracks the coil packs during removal for service of the engine. My personal opinion is that this is the majority reasons they fail.
It's very rear that the coil packs will fail on later models (after 2005) except if the shop cracks the coil packs during removal for service of the engine. My personal opinion is that this is the majority reasons they fail.
R.K.
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Thread Starter
MBWorld Fanatic!
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2015 Challenger Hellcat, 2023 Ram 3500, 2005 E55 Wagon, 2019 GLC63s
MBWorld Fanatic!
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From: Welwyn, Herts, UK
2006 S600
It seems like that, doesn't it?
Of course, it could be that with all those extra horses under the hood, its the driver who's putting the extra load on the coil packs
Nick
Of course, it could be that with all those extra horses under the hood, its the driver who's putting the extra load on the coil packs
Nick
