1987 5.0

REPLACED THE AIR FLOW SENSOR.

NOW

20% OF THE TIME, OUT OF THE BLUE, WHEN ACCELERATING FROM A STOP, I GET A BOG DOWN IN THE ENGINE FOLLOWED BY THE SERVICE ENGINE LIGHT COMES ON. ENGINE CAN BE HOT OR COLD OR WARMING UP WHEN THIS HAPPENS. NOT AS OFTEN FROM A COMPLETE STOP, BUT DURING DRIVING AROUND, SOMETIMES DURING STEADY DRIVING 30-45MPH RANGE, SAME THING HAPPENS.

WHEN I EXPLAIN THE BOG DOWN, IF YOU'VE EVER DRIVEN WITH A BAD AIR-FLOW SENSOR YOU'LL KNOW EXACTLY WHAT I'M TALKING ABOUT.

CAR CONTINUES TO ACCELERATE UNDER 1300 RPM WITH THE BOG DOWN THEN CLEARS AND RUNS FINE. SERVICE ENGINE LIGHT STAYS ON UNTIL I PARK THEN TURN OFF AND THEN WHEN I TURN BACK ON, ENGINE RUNS FINE AND SOMETIMES THE PROBLEM COMES BACK AND SOMETIMES IT DOESN'T.

I DON'T HAVE TO HIT SPEED BUMPS OR JERK THE CAR FOR THIS TO HAPPEN, AGAIN, HAPPENS OUT OF THE BLUE.

SINCERELY THANKS FOR ANY IMPUT....