2001 Volvo V70 2.4L turbo, OBDII monitoring tool indicates DTC codes:P0300 random Misfires P0301 cyl #1 misfire, P0304 cyl #4 misfire. Coil #4 replaced with new Volvo coil Jan 2010. Can feel engine running rough at idle. When rev'ing engine no load or under load, I hear a kinda of hollow popping sound, that seems to emanate from rear exhaust pipe area. When coil #4 failed last year, DTC P0304 only was recorded. Could feel engine misfire at idle and under load, plus loss of power; although, not hollow popping sounds from rear exhaust pipe area. Concerned that the popping sounds are detonation related misfires? Ambient temp 0F, engine temp indicates normal from Live OBDII Data. When a little warmer, I'll swap coil positions to determine if misfire moves to different cyl. Any thoughts?
have the same problem?
Monday, January 24th, 2011 AT 1:02 AM