What could be reason car wont start after replacing various parts? on 1997 Buick Park Avenue

Car started losing power while driving. It'd take a while to start back up. Replaced starter, solenoid, throttle position sensor, had alternator tested & replaced the 3 coils to ignition control module. What could be possibly keeping it from starting? Its like its not getting a spark. PLEASE HELP!

by in Potwin, KS on February 20, 2014
1 answer 1 comment
ANSWER by on February 20, 2014
check for spark and fuel pressure ...also scan test for codes
COMMENT by on February 20, 2014
Already tested for pressure. There is no spark. Already scanned for codes. I read about cam shaft sensor. Would that have anything to do with it not getting a spark? I was also told that it could be fuel pump/ or relay. Im going broke trying to fix this.