I am experienceing the same issue. I have a theory on this, I've researched and it appears to be symptoms of a poor fuel filter. I'll be at a red light and the rpms will just die and the motor will shut off, sometimes it hesitates on the highway, sometimes its as if I am having massive knock problems. The tach sometimes appears as jerky as a coked up motivational speaker. This did not start happening until a few days ago when temperatures dropped and maintained below freezing for quite some time. Today, tempuratures have exceeded 50* and the problem disappeared...
My theory, is that Mr. Al sadrqud's in his gas station is cutting the gas with water. The water is seperating and freezing or slushing causeing temporary blockage in the lines and around the filter.
Input from other more experienced members would be appreciated.
I was ready to put a new filter on but todays tempuratures have stayed well above freezing and I have not experienced this problem today. I live near Baltimore, MD where we had our first good frozen week and this is the first time I've experienced this but in NJ you probably had freezing tempuratures start a few weeks ago.
-Brooks