2008 Rough Idle

[TJMagoo]

I have an 08 KK with 91k miles on it.

Started happening yesterday on my way back to work from lunch. Driving in the highway around 45 mph, I gave it the gas and it started sputtering like it was going to stall. Gave it more gas, sputtering went away. On the drive home, same thing happened. Check engine light flashed a few times, never stayed on, just flashed.

Where do I start to diagnose what is going on? Thanks in advance!

 

[renegade 04]

You have a electronic throttle body problem most likely. If the CEL ever flashes you have a big problem, get the codes read asap.

 

[CactusJacked]

Go to Autozone, they'll read your codes for free. Even though your check engine light isn't on now, the fact that it flashed means the system might be storing a pending code.

 

[TJMagoo]

Thanks. It is going in the shop tomorrow. I hope it's an easy fix.

 

[JasonJ]

I have an 08 KK with 91k miles on it.

Started happening yesterday on my way back to work from lunch. Driving in the highway around 45 mph, I gave it the gas and it started sputtering like it was going to stall. Gave it more gas, sputtering went away. On the drive home, same thing happened. Check engine light flashed a few times, never stayed on, just flashed.

Where do I start to diagnose what is going on? Thanks in advance!

Just FYI, a Flashing MIL is WORSE than one that is on steady. It means stop, serious damage may result, do no drive me!

That being said, sounds like a fuel delivery problem. Could be the electronic throttle, something in the fuel pump itself, possibly failing injectors... gotta check DTC's first... good to hear the shop is going to look at it.

 

[TJMagoo]

Turns out it was a fouled plug and short in one of the coil packs. Probably got water on it when we flushed the heater core the day before. Replaced both and now it runs like a champ again.