Not a big deal but just curious. I have a 5.4 bout 130 thou on the clock. Sometimes at stoplights ill get a flutter. Like I duno it wont idle smooth. The only time i can think of something like this is when i had an old montecarlo that had an old carb. It would idle smooth then jus tlike flutter or buck alittle then smooth out again. No emenent problem just curious as to what could be the culprate.

ben

 

I had the same problem with mine. RPM's would drop to 250 every few seconds at a light and would frequently die going around a corner. The dealer chased the problem for months until they figured out one of the fuel sensors was bad. It is a problem that wouldn't show up on the dyno test. Drove both me and them nuts. Found the problem and now runs like a dream.