THSCC Forums

My E36 M3 is throwing an error code that indicates the ignition coil on cylinder 4 is bad, but are they counting from the back or the front? Google does not seem to have an answer to this very important question.

Thanks!

_________________
"Build a man a fire and he'll stay warm for a day. Set a man on fire and he'll stay warm the rest of his life."
'93 Subaru Legacy DIRTBOMB
'98 BMW M3
2013 Rallyx Co-VP

AFAIK, all engine cylinder numbers go from front to back, so in your case, #4 would be toward the firewall.

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Vincent Keene
'06 Ford Mustang GT (track rat)
'15 Dodge Charger R/T (yeah, it's got a HEMI!)
'07 Ford Fusion SE (205,000 miles and counting)
'98 Chevy Z-24 (retired)
'93 Acura Integra (Team SWB 24HOL Car)

Thanks, that helps. Of course, there was a 50% chance I'd get it right guessing, but this is easier

_________________
"Build a man a fire and he'll stay warm for a day. Set a man on fire and he'll stay warm the rest of his life."
'93 Subaru Legacy DIRTBOMB
'98 BMW M3
2013 Rallyx Co-VP

Definitely front to back.

You can swap coils around to see if the code moves with the coil.

I have a box full of used coils if you want to use a different one for troubleshooting.

Derp, replied on FB .

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2011/2012 Autox VP
2013/2014.5 President
2013 Top Gun

2015 Fit

22R-EC => 4G63 => D16Y7 + D16Y8 => EJ255 + K24Z2 => K20Z3 + K24Z2 => K24Z2 + M54 => L15B

I wonder if this is a good time to swap spark plugs as well? The last time it had new ones was at 85K, and its at 155K now. I don't expect a big improvement, but it couldn't hurt, right?

_________________
"Build a man a fire and he'll stay warm for a day. Set a man on fire and he'll stay warm the rest of his life."
'93 Subaru Legacy DIRTBOMB
'98 BMW M3
2013 Rallyx Co-VP