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!
1992 ford f150 5.0 5sp new battery and cables new alt starter disturbtior module key switch ing switch on stering coulm and the fuel line gets hot by the fuel pressure regulator
Last edit: 2 years 3 weeks ago by ford f150. Reason: more info
Start simple. With the key in crank, measure voltage at all four posts of the starter solenoid (in the engine bay, not at the starter motor itself). Three should read 12V, one should read zero. Or, if your solenoid only has three posts, all three should read 12V.