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!
Threw oxygen sensor codes low voltage all 4
replaced sparks
Tps and mass
Ran fine for 4 days, misfire thru intake fuel pressure ok ,
Is possible to have several bad ignition coils, did engine balance test no luck
Sparkplugs are fouled up
