08-22-2017, 01:41 PM | #1 |
Alphanumeric
Join Date: Aug 2005
Carmudgeonly Ride: 981S, 340i
Posts: 9,587
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Replace one ignition coil or all six?
On the 535i a CEL that keeps coming back (and this time here to stay) seems to be due to a weakening coil (car still gets 27mpg) highway. Perhaps this coil is the reason for a shaky idle. I'm not sure.
Shop called me. If I replace one coil, it's $180 with labor. Should I replace all six for $580 (with labor) preemptively? Plugs were done 10k miles ago. |
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