i have a 97 t/ c with a 3.8 , 3 years ago my wife drove into a puddle and locked the motor , i replaced but had no power to ign relay , so i bypassed temporarily , and recently i have been loosing my inst cluster , and it has been running bad , i replaced the bcm , fuse panel under dash , computer , engine wiring harness , that fixed the electrical problem with the relay , here is my current problem , starts fine , runs good for about 3 min then no power , bogs down and backfires in the intake when you push on the gas but when you let up the idle returns to normal ... any ideas will be greatly appreciated