Starts can drive half a mile then shuts off and was not firing on all cylinders?

STEVEN GRIBBINS

MEMBER
2004 DODGE TRUCK
5.9L
V8
4WD
MANUAL
187,000 MILES

The truck had a wiring issue where it wasn't firing on all cylinders, I continued to drive it till it just wouldn't start anymore. Although it sounded like it wanted to so I took fuse box apart got it to fire on all cylinders and to finally start but only run for a ½ a mile then shut off will only run really bad if I pump gas really fast it has black buildup in intake.

3 Replies

KEN L

MASTER CERTIFIED MECHANIC
42,951 POSTS

It sounds like the fuel pump is going out, but can you run the codes to see if any are stored?

Here is a guide to help:

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

Also, when the engine stalls, can you turn the key on without cranking the engine over can you hear the fuel pump run in the tank for about 5 seconds?

This guide can help as well:

https://www.2carpros.com/articles/engine-stalls

Please go over these guides and get back to us.

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Monday, February 12th, 2024 AT 9:51 AM

STEVEN GRIBBINS

MEMBER
26 POSTS

I put a new fuel pump in it when was able to stay running you could hear something in the valve cover clanging around and now that it only stays running a few mins I don't hear the clinging but the intake manifold is covered with black soot.

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Sunday, February 25th, 2024 AT 4:12 AM

KEN L

MASTER CERTIFIED MECHANIC
42,951 POSTS

Hmm, it sounds like the exhaust might be clogged, I would loosen the exhaust system at the exhaust manifold flange to see if that makes a difference. The engine will be i bit louder FYI. Also, this guide might help:

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

Also did you run the codes?

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Monday, February 26th, 2024 AT 10:46 AM