check engine comes on and off - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Chefboyarmin · 10-09-2017, 06:28 PM

So my check engine light came on a while ago and i checked it and it gave me the ignition coil code. i didn't have the money atm to fix anything so i left it alone for a couple of days. when i turned it back on the light was off, but every time i quickly accelerate while driving the CEL comes back on for a day or two then it turns off again. my RPM's aren't jumping up and down the way it would if i had a bad ignition coil, so im thinking its most likely my spark plugs or spark plug wires. has anyone experienced this issue or could you tell me what you think? thanks.

strat61caster · 10-09-2017, 06:37 PM

Replace the coil pack it tells you to if you want the code to go away.

http://www.ft86club.com/forums/showthread.php?t=30879

humfrz · 10-09-2017, 07:52 PM

Quote:

Originally Posted by Chefboyarmin

So my check engine light came on a while ago and i checked it and it gave me the ignition coil code. i didn't have the money atm to fix anything so i left it alone for a couple of days. when i turned it back on the light was off, but every time i quickly accelerate while driving the CEL comes back on for a day or two then it turns off again. my RPM's aren't jumping up and down the way it would if i had a bad ignition coil, so im thinking its most likely my spark plugs or spark plug wires. has anyone experienced this issue or could you tell me what you think? thanks.

Hello Chefboyarmin and welcome to our forum .......

You might try plan B ...... first. That would be to disconnect your car's battery for a few minutes (then hook it back up ....

) to make sure the engine code thrower just isn't messen with you. You might get lucky.

If that don't work, I'd suggest you go with plan A, that @strat61caster suggested.

I hope you get it sorted out ......

humfrz

Chefboyarmin · 10-10-2017, 03:37 PM

thanks for the feedback. that was the first thing i did humfrz, but every time i push it past 6 or 7 rpm's the CEL comes on. Also, ive always heard that if you replace 1 coil pack you might as well replace all four. what do you guys think?

jasonojordan · 10-10-2017, 03:39 PM

How many miles are on the caR?

Icecreamtruk · 10-10-2017, 04:29 PM

Dont replace all 4, waste of money and time. Replace the one that is bad. The code will tell you which location, Im going to guess and say it was P0351, since its the most common, thats passenger side, the closest one to the front of the car.

You might think that replacing the coil pack will resolve this issue forever. But if you are like most other people I've seen, usually once a coil pack goes bad, it will periodically keep going bad, the same one, at the same spot.

10-09-2017, 06:28 PM	#1
Chefboyarmin Junior Member Join Date: Aug 2015 Drives: hyper blue scion FR-S Location: Columbia, MD Posts: 2 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	check engine comes on and off So my check engine light came on a while ago and i checked it and it gave me the ignition coil code. i didn't have the money atm to fix anything so i left it alone for a couple of days. when i turned it back on the light was off, but every time i quickly accelerate while driving the CEL comes back on for a day or two then it turns off again. my RPM's aren't jumping up and down the way it would if i had a bad ignition coil, so im thinking its most likely my spark plugs or spark plug wires. has anyone experienced this issue or could you tell me what you think? thanks.

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10-10-2017, 03:37 PM	#4
Chefboyarmin Junior Member Join Date: Aug 2015 Drives: hyper blue scion FR-S Location: Columbia, MD Posts: 2 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	thanks for the feedback. that was the first thing i did humfrz, but every time i push it past 6 or 7 rpm's the CEL comes on. Also, ive always heard that if you replace 1 coil pack you might as well replace all four. what do you guys think?

10-10-2017, 03:39 PM	#5
jasonojordan Senior Member Join Date: Jul 2013 Drives: 2013 satin white brz limited Location: Cottage Grove MN Posts: 1,049 Thanks: 162 Thanked 511 Times in 326 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	How many miles are on the caR?

10-10-2017, 04:29 PM	#6
Icecreamtruk Senior Member Join Date: Dec 2015 Drives: Track preped NA FRS Location: Montreal, Canada Posts: 987 Thanks: 1,056 Thanked 680 Times in 405 Posts Mentioned: 12 Post(s) Tagged: 0 Thread(s)	Dont replace all 4, waste of money and time. Replace the one that is bad. The code will tell you which location, Im going to guess and say it was P0351, since its the most common, thats passenger side, the closest one to the front of the car. You might think that replacing the coil pack will resolve this issue forever. But if you are like most other people I've seen, usually once a coil pack goes bad, it will periodically keep going bad, the same one, at the same spot.

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