Engine Performance problem 1997 Pontiac Grand Am 4 cyl Front Wheel Drive Automatic 200000 miles I recently rebuilt a Quad 4 engine in a 97 grand am because of blown pistons and head. I replaced all those internal parts (rings etc.) And it is hard to start. I checked timing (4 X'S) fuel and spark. I checked for vacuum leaks. The one thing that I noticed is that when I pull a vacuum line (any one) from the throttle body, it ran better. It was like it wasn't getting enough air. Then it wouldn't crank at all. I found out the fuel pump went out. Replaced that and it still would not start. Had it towed for diagnosis and they said I needed to change the computer, instrument cluster and maybe the the ignition switch. I replaced everything but the ignition switch so far. I'M TIRED! Now what would you suggest? I put too much into it to just let it go.
Tuesday, March 8th, 2011 AT 3:08 PM