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!
Crank No Start, Hyundai Elantra HD 2010 1.6L DOHC Gasoline Engine
So, my car cranks but won't start. No codes, but the ECM shows readings of 3000 rpm, 51.76% throttle position, and 80 degrees celsius coolant temperature. needless to say that the fuel pump doesn't work when the ignition is turned to the 'ON' position. I checked the CKPS and ECT sensors for resistance and they were at specs. The readings remain the same when I unplug these sensors. The 5V reference is there. The Check Engine Light is not on when the ignition is on.