flashing MIL

[Hexxus]

I plugged in and there are no stored codes.

I have been scanning the 10K page book for situations for which that light flashes but I haven't found it yet.

I have searched this forum and other sources for an answer but there is a wide range of answers.

I am considering calling the dealer but would rather not.

 

[TERRY G ABNEY]

Usually it means a misfire is occurring and perhaps hasn't set off a code yet but its most likely a bad plug or coil pack,,Is it running rough or bad idle ? Or anything noticeable different while driving ?
,,I have had failing coil packs make the light flash and run ok most of the time and just misfire very randomly until it actually sets a code other reasons are a catalytic converter could be an issue or one of the reasons below

• Ignition coil has failed
• Fuel injector has failed
• Engine computer has failed
• Spark plug
• Spark plug wire
• Bad engine valves

But I would try an find problem especially if it is one of the cats failing

If you have a good code reader you could pull some live data on the cats and see how the 02 sensors are reading

 

[Hexxus]

I was able to pull a cylinder two misfire DTC today. It is most likely because I broke the coil pack boot that sits over the plug. I have 8 boots on order, plus plug wires.

 

[TERRY G ABNEY]

I was able to pull a cylinder two misfire DTC today. It is most likely because I broke the coil pack boot that sits over the plug. I have 8 boots on order, plus plug wires.

Good that you found it ,