The vehicle is a 95 z28 with 111,000 miles with no record of spark plug change. The situation is worsening. It will stumble one time per check engine light. It will happen under hard acceleraton and cruising with little throttle.:thumbsup: Any ideas? Feel Free to help.

mine did that, then gave me a random misfire code it was bad plugs let it go it got worse, changed plugs it all went away, if that helps:thumbsup:

that is what I think is going on. I am gonna have the computer checked at advanced for the light keep coming on. May be condensation in the tank with a blocked fuel filter. Thank you for your response.

Found problem. Dirty mass air flow sensor.