Hey All - Hoping someone can give me some perspective and advice on the codes I've been getting on my 3G TL.

I have a 2004 TL Auto with 182,000 miles.

Last saturday I filled up at a different gas station, the next morning I went for a short drive, on the way home my CEL started blinking. I let the car sit for a bit then investigated. I got the following codes (P0300, P0301, P0302,P0303, P0304, P0305, P0306)

The car idles very rough, acceleration up to 3K-3.5K rpms is rough and makes what sounds like a "puffing" noise. Runs fairly smooth from 4K to 5K though.

I've gone through some threads already that have given me some ideas I'm just trying to think about the order in which I should look at things.

BTW, I have seafomed already, although I had almost a full tank of gas so I'm not sure if that makes a difference or not.

 

It could be so many things....

Bad spark plugs
Bad coil
Bad gas

Flashing check engine is no good,does it stop or does it stay flashing?

 

It stays flashing the whole time.

 

Don't drive it at all!..........check coil packs...it means it's misfiring a lot and it could kill your catalytic converters....have a machanic look at it