...up for 30 min or so? 1995 pontiac transport-3.8 liter (3800) engine When i first got it the torque converter felt like it had a problem. took it to ohio and the torque converter problem went away but then started stumbling really bad while accelerating. (only in gear, not park??) Now it will run for 15 minutes then die and wont start back up (has gas but no spark) till it sits a while. Ive replaced the computer, the ignition module, egr, maf, fuel pump, and did a complete tune up. Took it in and the computer read solenoid problems, cam sensor errors and the maf reads fine for a while then drops to zero. Mechanic said get rid of it but I would like to fix it. Can anyone give me some answers????