OVERVIEW: MY 2009 DODGE CHALLENGER R/T, WITH THE 5.7L HEMI ENGINE AND MANUAL 6-SPEED TRANSMISSION, HAS AN EXCESSIVE DELAY BETWEEN PRESSING THE THROTTLE AND ACHIEVING ENGINE RESPONSE. THIS OCCURS ONLY IN GEARS 4-6, AND IS THE RESULT OF A POWERTRAIN CONTROL MODULE (PCM) UPDATE. BACKGROUND: THIS VEHICLE HAS AN ELECTRONIC THROTTLE ("DRIVE BY WIRE") SYSTEM, WHERE THROTTLE RESPONSE IS CONTROLLED BY THE PCM AND NOT VIA A THROTTLE CABLE. HISTORY: ON OCTOBER 14, 2011, I BROUGHT MY VEHICLE TO MY LOCAL DODGE/CHRYSLER DEALERSHIP DUE TO A ROUGH ENGINE IDLE. THEY INFORMED ME THAT A PCM UPDATE WAS AVAILABLE, BASED ON TECHNICAL SERVICE BULLETIN (TSB) 18-014-10. THIS UPDATE CHANGED THE ENGINE CALIBRATION ID FROM 05187899AE TO 05187899AG. EVER SINCE THIS UPDATE WAS PERFORMED, THE VEHICLE HAS A SIGNIFICANT (AND UNSAFE) THROTTLE DELAY WHILE IN GEARS 4-6. BASICALLY, WHEN THE THROTTLE IS DEPRESSED, IT TAKES ABOUT 2 SECONDS FOR THE ENGINE TO RESPOND. THIS HAS RESULTED IN SEVERAL NEAR-COLLISIONS, DURING TIMES WHERE ACCELERATION IS EXPECTED TO AVOID AN UNSAFE ROAD CONDITION BUT THE VEHICLE FAILS TO RESPOND IN A TIMELY MANNER. TO DEMONSTRATE THE PROBLEM, YOU COULD ACTUALLY RAPIDLY PULSE THE THROTTLE REPEATEDLY WITHOUT HAVING ANY ENGINE RESPONSE AT ALL. THIS ISSUE AFFECTS ALL OWNERS OF 2009-2010 DODGE CHALLENGER R/TS WITH THE 05187899AG CALIBRATION ID. AS OF THIS DATE, NO PCM UPDATE HAS BEEN RELEASED TO CORRECT THIS UNSAFE CONDITION. *TR
