NHTSA Complaint #10577303 — 2013 FORD FOCUS

UPON STARTUP, THE CAR IDLES ROUGH AND THE RPMS DROP UNTIL THE ECU CATCHES IT AND THE RPMS INCREASE. THE PROBLEM BECOMES MORE FREQUENT AS THE CAR IS DRIVEN. AT TIMES, THE RPMS WILL DROP SO FAR THAT THE CAR WILL STALL. THE PROBLEM TENDS TO GET WORSE AS THE CAR HEATS UP. IT HAS STALLED MULTIPLE TIMES WHEN COME TO A STOP AT AN INTERSECTION OR TO PARK. FOR EXAMPLE, I WENT OUT TO START THE CAR AFTER ABOUT 20 MINUTES OF IT SITTING AFTER 40 MINUTES OF MIXED COMMUTING AND THE CAR COULD NOT KEEP AN IDLE. IT STALLED ON ME 3 TIMES AND FELT LIKE IT WAS GOING TO SHAKE ITSELF TO PIECES. I FINALLY GOT IT STARTED BY HOLDING DOWN THE THROTTLE AND I WAS ABLE TO MOVE THE CAR. IT WAS 60-63 DEGREES OUT ON APRIL 3RD, 2014 IN SOUTHEASTERN CT WHEN THIS PROBLEM OCCURRED. THE PROBLEM ALSO SEEMS TO GET WORSE AS THE AIR TEMPERATURE INCREASES. *TR