Service Engine Soon.....Ignition coil Part Ii

wanker · 12-17-2020, 11:30 AM

If you are getting misfires to a specific cylinder, it's either the spark plug or the ignition coil.

FWIW, when an ignition coil goes bad you will know. Your engine will run incredibly rough.

MSC43 · 12-17-2020, 01:02 PM

Quote:

Originally Posted by wanker

If you are getting misfires to a specific cylinder, it's either the spark plug or the ignition coil.

FWIW, when an ignition coil goes bad you will know. Your engine will run incredibly rough.

That is the thing......I noticed no difference when driving or felt anything strange....just the "service engine light" came on.

wanker · 12-17-2020, 02:17 PM

Quote:

Originally Posted by MSC43

That is the thing......I noticed no difference when driving or felt anything strange....just the "service engine light" came on.

Random misfires can be a lot of things. The MAF, O2 sensors, the spark plugs, ignition coils, and bad gas.

I'd start by adding a fuel cleaner with your next tank of gas. Sometimes that helps.

Also depending on your miles, maybe it's time for a tune-up. I'd replace all the plugs and see what happens. And it wouldn't hurt to replace the ignition coil in the No. 3 cylinder.

MSC43 · 12-17-2020, 04:27 PM

Quote:

Originally Posted by wanker

Random misfires can be a lot of things. The MAF, O2 sensors, the spark plugs, ignition coils, and bad gas.

I'd start by adding a fuel cleaner with your next tank of gas. Sometimes that helps.

Also depending on your miles, maybe it's time for a tune-up. I'd replaced all the plugs and see what happens. And it wouldn't hurt to replace the ignition coil in the No. 3 cylinder.

my mileage is 105,000....I replaced the plugs and did a tune up 10,000 miles ago... so I think I am good there.....replaced the cam shaft position sensors recently also due to another service engine light.....Is this something I can do at home?

12-17-2020, 11:30 AM	#1 (permalink)
wanker Enthusiast Member Join Date: Apr 2014 Location: San Diego Posts: 443 Drives: 2011 370Z S/T A7 Rep Power: 2902	If you are getting misfires to a specific cylinder, it's either the spark plug or the ignition coil. FWIW, when an ignition coil goes bad you will know. Your engine will run incredibly rough. Optimiser likes this.

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