I have a issue of my car not cranking once in a while. Its a 2000 saleen s281supercharged.It has 37, 000 original miles.Its a stock bottom end with a 1.7 kenne bell blower 42 # injectors with boost pump. It really doesnt matter if its hot or cold start. If I hold the gas pedal down it fires immediately. Just looking for some advice or if anyone can help I would appreiciate it. Thx

 

Have you tested the throttle position sensor?