Several months ago idle got irregular. Was told it was the throttle mod. Not too bad so we drove it as is for a month. Then the car started to "spas out" trac light flashing almost complete loss of power If we kept on trying to gun the gas it would stop. Got more frequent so we took it in to have the throttle mod replaced and all was well. Last week it started sdoing it again. Gave no codes. Rebuilt the ABS mod still doing it. still no codes Help!!!