2003 Pontiac grand am 3.4 car cranks has great fuel pressure and spark will not start when ambient temp under 75 deg without hot shot then fine the rest of day…have replaced fuel pump map sensor cam sensor air temp sensor.
What is hot shot . . . ?
“great fuel pressure” . . . I will assume you hooked up a gauge, and that the pressure holds after the engine is shut off
Please correct me if I’ve made any incorrect assumptions
You might want to check for current/stored fault codes
You might also want to check the coolant temp sensor is operating correctly