Constant fuel but no spark

CHRIS GOULD

MEMBER
1998 DODGE TRUCK
5.9L
V8
4WD
AUTOMATIC
106,194 MILES

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.

Thursday, August 10th, 2017 AT 3:18 PM

5 Replies

KEN L

MASTER CERTIFIED MECHANIC
42,968 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

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Monday, August 14th, 2017 AT 9:36 AM

CHRIS GOULD

MEMBER
11 POSTS

Have checked all fuses & relays & grounds multiple times. Still no change

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Monday, August 14th, 2017 AT 9:46 PM

KEN L

MASTER CERTIFIED MECHANIC
42,968 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

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Wednesday, August 16th, 2017 AT 10:44 AM

CHRIS GOULD

MEMBER
11 POSTS

Have hooked a few scanners up, unable to read anything. Through error

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Saturday, August 19th, 2017 AT 10:01 AM

KEN L

MASTER CERTIFIED MECHANIC
42,968 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

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