Constant fuel but no spark

1998 DODGE TRUCK
106,194 MILES • 5.9L • V8 • 4WD • AUTOMATIC
Avatar
CHRIS GOULD
  • MEMBER
  • 11 POSTS
My truck has constant fuel with the key on but no spark. I have changed crank sensor, cam sensor, cap and rotor, coil. Checked all grounds and fuses, still nothing. Has no power to the coil. Please help. thanks in advance.
Aug 10, 2017 at 3:18 PM
Advertisement
Avatar
STRAILER
  • CERTIFIED EXPERT
  • 53,854 POSTS
Hello,

It sounds like the ASD relay has gone bad. Here is a guide that will help us confirm the problem.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Please let us know what you find.

Cheers, Ken

Aug 14, 2017 at 9:36 AM
Avatar
CHRIS GOULD
  • MEMBER
  • 11 POSTS
Have checked all fuses & relays & grounds multiple times. Still no change
Aug 14, 2017 at 9:46 PM
Advertisement
Avatar
STRAILER
  • CERTIFIED EXPERT
  • 53,854 POSTS
Lets try reading the codes to see what comes up. This will let us know if we are missing anything obvious.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please let us know what you find.

Cheers, Ken
Aug 16, 2017 at 10:44 AM
Avatar
CHRIS GOULD
  • MEMBER
  • 11 POSTS
Have hooked a few scanners up, unable to read anything. Through error
Aug 19, 2017 at 10:01 AM
Avatar
STRAILER
  • CERTIFIED EXPERT
  • 53,854 POSTS
Yep it sounds like the PCM is gone and needs to be replaced.

Here is its location, I would get a used one so its plug and play.

Please let us know what happens.

Cheers, Ken
Image (Click to enlarge)
Attached Media
Aug 19, 2017 at 10:58 AM