EOCing problems

[pete c]

I have an '09 Sonata, 4 cyl, 5 spd. I have EOCed it using the ignition switch on a regular basis since new. It now has 110K on the clock. Last week, I did a typical EOC on a downhill stretch on the interstate. After popping it into 5th, I got a flashing CE light and it seemed to be running on 3 cylinders.

I pulled off at the next exit. Shut it off, restarted. No CE, running like new.

WTF?

I have not EOCed it since.

Any ideas?

A few weeks ago I did get a solid CE light after an EOC while on cruise control. It ran fine during this stretch for a few miles. When I disengaged the cruise and lifted the throttle, the CE light cleared.

Would installing a FI cutoff switch possibly avoid these problems? I really should as 09 Sonata headlights go off with the ignition switch, making ignition switch EOCing at night kind of interesting.

[nemo]

Do you have any way of checking for codes? That may give you anindication of what happened.

I have not EOCed it since.

Sounds like a good choice until you get it figured out.

[pete c]

It's been many hundreds of miles since. Would the codes still be stored?

[dirtydave]

Same thing happens in my KIA I just kill it again and bumpstart again and it goes away. I got a code for the fuel injectors. It probably thinks something is wrong because the engine keeps cutting out.

[nemo]

Originally Posted by pete c

It's been many hundreds of miles since. Would the codes still be stored?

Some codes are retained even if the light goes off.

[dirtydave]

And you need a kill switch it will change your life lol.