ANYMORE TROUBLE SHOOTING IDEA'S. HAVE TRIED THESE. STARTED WITH CODE E34 CLEARED CODE RAN LIFT AGAIN RE-CKED EACH COIL PACK. CODE DIDN'T COME BACK. ANYTHING ELSE TO CK WHAT DO U THINK I AM MISSING DID SPARK TEST ALL CYL-S FIRING ONLY THING THAT WAS DONE SPARK PLUGS WERE CHANGED BY SOMEONE ELSE. FIRST THING I CKED WERE PLUGS EVEN SWAPPED THEM OUT 2 TIMES. CUSTOMER STATED THE ONLY THING WAS DONE WERE THE PLUGS CHANGED. LIFT RUNNING FINE UNTIL CUSTOMER CHANGED PLUGS.