2001 Neon No spark #1 and 4
#11
02-26-2008, 07:31 PM
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RE: 2001 Neon No spark #1 and 4
ORIGINAL: AMX
Further update; used an analog ohmeter between the crank sensor wires while cranking engine and had plenty of needle movement. Crank and crank signal input into computer was verified as good. Used a 12 volt test light between 12 volt supply to ignition coil and and the trigger wires individually back to the computer. # 2 and #3 cylinder trigger wire pulse while #1 and #4 wire will not pulse while cranking. By process of elimination everything functions as required but the computer. Replaced computerwith known good part, coil fires on all cylinders, A+.Neon roadworthy again, A+. Student very happy, A+. LocalChrysler assistance in supplying wiring diagram or theory of operation,to students working in a lab doing diagnostic work, D-.
Thank you for your help.
Further update; used an analog ohmeter between the crank sensor wires while cranking engine and had plenty of needle movement. Crank and crank signal input into computer was verified as good. Used a 12 volt test light between 12 volt supply to ignition coil and and the trigger wires individually back to the computer. # 2 and #3 cylinder trigger wire pulse while #1 and #4 wire will not pulse while cranking. By process of elimination everything functions as required but the computer. Replaced computerwith known good part, coil fires on all cylinders, A+.Neon roadworthy again, A+. Student very happy, A+. LocalChrysler assistance in supplying wiring diagram or theory of operation,to students working in a lab doing diagnostic work, D-.
Thank you for your help.
