Okay.
This sounds like you are having a rich condition and need to address the cel.
When the cel flashes, most often too much fuel is not being burned getting into the catalytic converter. This will detroy the converter iof it already hasn't. The chugging is misfiring.
Need to get this diagnosed or start troubleshooting by getting the codes from the pcm.
Friday, October 22nd, 2010 AT 7:21 AM