4th gear, going 80, check engine light flashing

sloppymax said:

If the CEL was flashing then it picked up a misfire. How many miles? Curious if the spark plugs are due for replacement.

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Cplennon17 said:

Hey Guys,

As stated in the title, I was going around 80 in 4th gear, waiting to pass someone and all of a sudden my check engine light started flashing at me.

I put the car in 5th and just cruised till it went away (within 30 seconds). I did not notice any performance issues besides my AC going from cold air to just basically a fan.

I do not have a tune, just an X-pipe, catback and intake.

Hoping this was 1 time thing and nothing is effected? Maybe someone had a similar experience?

Any help is appreciated!

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sloppymax said:

I would start with pulling the plugs. Check the gap and condition of each to verify they are okay. You could also run a scan on the OBD to see if it set a historical CEL. The code may tell you which cylinder it detected the misfire. At least then you could see if you have a defective coil that might be working intermittently.

The reason I mention doing the work yourself is that the dealer is unlikely to diagnose without an active CEL.

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Diocletian said:

I thought you need a tune to not throw a CEL with breather mods, especially the intake? Does your intake not require one?

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