NHTSA Complaint #10147391 — 2000 VOLVO S80

IN MID 2005, I STARTED HAVING PROBLEMS WITH MY VOLVO S80 (YR 2000) IDLING AT STOP LIGHTS. THE IDLE WOULD FLUCTUATE FROM 400 TO 1100 RPMS. AT TIMES THIS WOULD CAUSE MY CAR TO DIE. WHILE IT WAS A NUISANCE AT STOP LIGHTS, IT STARTED TO FLUCTUATE AT HIGHER RPMS AND THREE TIMES WHILE ON THE INTERSTATE GOING APPROXIMATELY 55 MPH THE CAR DIED AND I HAVE TO PUT IN NEUTRAL AND RESTART WHILE IN RUSH HOUR TRAFFIC. I TOOK TO SERVICE PLACE AND THEY DID A DIAGNOSTIC, AND REMOVED AND CLEANED THE THROTTLE BODY BEFORE REPLACEMENT. THE FOLLOWING CODES WERE FOUND IN THE ECM 9160, 9150, 904C 903F 9040 AND 130A. AFTER THEY RESET THE FAULTS AND REMOVED AND CLEANED THE THROTTLE BODY, THEY TEST DROVE THE CAR AND THE SAME IDLE AND (AND IT DIED) PROBLEMS EXISTED. THEY REPLACED THE THROTTLE BODY ACTUATOR ASSY, UPGRADE ENGINE MANAGEMENT SOFTWARE TO WORK WITH NEW ACTUATOR. SINCE THEY HAVE REPLACED THE ELECTRONIC THROTTLE BODY I HAVE HAD ZERO IDLING PROBLEMS TO DATE. I HAVE ALL COPIED OF MY PAPERWORK IF NEEDED. *JB