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!
needing a wiring diagram of the engine management system. im not getting a 5 volt ref out of pin 26 of the pcm on the brown/white wire. i dont have service information for this old thing. thanks!