Alrighty, time to post this for the 2nd time as the first time ck5 went down as I submitted Alright, for the sake of electronics, lets call my truck an 87 TBI 454. Now as for symptoms. Yesterday went out, drove maybe 2 blocks from my house, and it started spitting and sputtering, idling really low (400rpm) and generally poor. So I checked the computer chip as it has popped loose before and given similar symptoms. After that, it fired up and ran just fine. So today, I go to leave, get 3 blocks away and it starts makin a noise like an exhaust leak. Sounded like one of those delivery style trucks. Came home, parked it, took my moms jeep to school. Came home to start diagnosing, and the noise isnt exhaust. It was coming from the area of the torque converter/flexplate. Pulled off the inspection cover, and checked the TC bolts and looked over the flywheel as best I could for cracks. Fired the truck up, didnt hear the noise, so took it for a testdrive. Got about halfway around the neighborhood and the noise started again . Got 2 blocks from my house and it started surging, spittin, coughin. Got home, killed it, checked the chip again. I also changed the ignition module since I had another sittin on the shelf, and Ive had those cause weird issues in the past. Now the damn thing wont even start. It just backfires up through the throttle body when you try to start it. I swapped ign modules back thinkin maybe the new one was bad out of the box, still just backfires through the throttle body. Does anyone have a clue as to what to check next? Im at wits end with this thing, does anyone have any ideas as to what to check next before I blow this thing up? Thanks guys. Chris.