No getting any battery voltage to the ignition coil connector

Tiny
DEMETRIUS BROWN2
  • MEMBER
  • 1997 FORD F-150
  • 4.2L
  • V6
  • RWD
  • AUTOMATIC
  • 244,000 MILES
My girlfriend bought the truck and it was not running. She was told it was the flywheel, but when I checked it the flywheel was fine. The truck cranks, but it wont start. I am not getting any fire to the coil. I started with the battery because I own a Ford myself and I know how many problems that it can cause in a Ford. So I changed out he bad terminals, but it did not change. I ran resistance tests on the coil and it was fine, so I swapped the crank sensor, but no change. I talked to one of my auto tech teachers and he said see if I have battery voltage at the coil connector. If not then the ICM is more than likely bad if the coil tests good and the crank sensor is new.
Tuesday, October 18th, 2016 AT 8:20 AM

3 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
You want to check the EEC (main power) relay and the fuses that supply it.
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Tuesday, October 18th, 2016 AT 9:16 AM
Tiny
DEMETRIUS BROWN2
  • MEMBER
  • 2 POSTS
Already checked the relay fuses
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Tuesday, October 18th, 2016 AT 12:23 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
The power for the coil comes directly from the fuse in the diagram.

http://i1198.photobucket.com/albums/aa448/Wrenchtech/219573113.gif

https://www.2carpros.com/images/external/219573114.gif
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Tuesday, October 18th, 2016 AT 12:37 PM

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