S-Class (W140) 1991-1999: 300 SD, S 350TD, 300 SE 2.8, S280, 300 SE 3.2, 300 SEL 3.2, S320, S320L, 400 SE, S420, 400 SEL, S420L, 500 SE, S500, 500 SEL, S500L, 600 SE, S600, 600 SEL, S600L, 500 SEC, 600 SEC

Right Side Coil Packs Keep Blowing?

Old 08-22-2010, 09:37 PM
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2003 E500 Sport, 1999 ML430 & Regal 402 Commodore
Right Side Coil Packs Keep Blowing?

Has anybody had just one side of thier ignition system cause an issue? I keep blowing coil packs on my 1998 S420 only on Cylinders 5 through 8. A buddy of mine has an OBD diagnosic & he showed me some ignition fluctuation on cylinders 5-8.

I can only imagine a bad ground being an issue, so any input or experience you all may have could be a great help.

Thanks

1998 S420 102,000 miles
2003 E500 Sport
1999 ML430 Sky Roof
1998 Dodge Ram 3500 4X4 Cummins
Old 08-23-2010, 05:36 AM
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s320
Are you buying good paks? Several different companies.
Old 08-26-2010, 11:23 PM
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I've tried all brands; oem and aftermarket. It still keeps blowing them on one side of the engine. Like 5 in the last year.
Old 08-27-2010, 08:02 AM
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s320
Could it be that the right bank has more heat.Like measure difference.Also your ground idea sounds right.Can you add extra ground?
I would like to know the fix to your problem.

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