So they got my baby back up and running (99 chevy Blazer) they have changed spark plugs, destributer cap, injectors, dropped and cleaned out the feul tank, they ran codes on it, they came up saying misfire so they changed the spark plugs. But still the engine shakes while im at a redlight. If you have any ideas please let me know.

 

My 94 does the same exact thing. Runs awesome, but when I stop at a light, it shakes pretty bad. Mine isn't throwing any codes though. By all means, if you figure out what it is, please let me know......