Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
have a 2013 chev cruise that has a unique problem after running about 15 min it goes into a problem stalls loses injection pulse then when it wants to it works ok goes into reduced power with no dtcs shown has good fuel pressure secondary ignition sparking when problem is present. just loses ground side pulse width tested powers and grounds cleaned grounds ohmed inn 12.8 tried crank sensor and throttle body thinking pcm what's your 2 cents tia