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coyote556

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  1. I thought the same thing but the good battery and the voltage on the positive input of the coil dropping to 10.7 during cranking is what led me there. The service manual said anything over 10v while cranking was fine. The only thing I can come up with is the aftermarket ignition coil on the car did not like the lower voltage. I could add a jump pack to the car when it was cold and it would start every time. I did voltage drop tests on all four wires from the coil, all the way to the ecm on the signal wires also. Additionally did voltage drop tests on the hot lead to the starter. All tested fine. That’s what led me to the starter having high current draw. I’m just glad it’s fixed.
  2. I got mine fixed. Voltage at the coil was dropping to 10.7 while cranking when it wouldn’t start. Swapped out the starter and now voltage to the coil never drops below 11.3 while cranking and it starts every time, no matter how cold.
  3. So I was thinking the same on mine but this morning I checked resistance on both signal wires from the ecm to the coil and both were less than one ohm.
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