Why is my engine running rough?
My check engine light (flashing) when on 3 mins
after starting, followed by the VSC and trac off
light, and running rough. 06 Sienna with 105k
miles, any thoughts, thanks for any input!
A flashing check engine light means you have a misfire that's serious enough to damage the catalytic converter. Get the trouble codes read and find out what's causing the misfire and then concentrate on the VSC and traff off codes.