I have a code P1300. I check the white wire(igt circuit) from ignitor to ecm, no open or short.
Next I backprobe ecm terminal No 20 to ground, 0 volts
if I disconnect ignitor and backprobe terminal 20, I have.7 volts
I tried a aftermarket ignitor same problem.
I check ignition coil ohmed bad replace with oem coil
I check power and ground at ecm . They check fine
I tried a ecm from another aftermarket same problem
check igf wires from ignitor to ecm, complete circuit
check wires from distributor to ecm, complete circuit
pick up resistance within specs
crank sensor within specs
car runs for a few minutes then shuts down when code sets
have the same problem?
Monday, September 28th, 2015 AT 3:35 PM