7.3 excursion keeps dieing wife ready to divorce

[Dirk]

You will need to put the truck on a scanner and monitor the datastream as stated before. PID's to monitor, batt voltage, ICP, RPM, and IPR dutycycle. Voltage reading low or randomly dropping will cause it to die and not restart. It's random, but I've seen that a few times, That will be a short in the harness somewhere or bad cables. You should see RPM's jump to 200-250 when cranking. If you don't see rpm's, it's a harness issue, CPS sensor, or connector issue. ICP should quickly raise to 600psi+ when cranking and IPR duty cycle should raise as well.

Are you positive you are getting proper fuel pressure at all times?

[snowman]

Not sure on the fuel pressure but motor dies with out sputtering cutting out or anything else

[Dirk]

Then your fuel pressure *should* be fine.

[snowman]

Re the fuel if it is any of the filters or injectors or other fuel system wouldn't the engine sputter, cough extra?

[snowman]

Re the fuel if it is any of the filters or injectors or other fuel system wouldn't the engine sputter, cough

[Dirk]

Originally Posted by snowman

Re the fuel if it is any of the filters or injectors or other fuel system wouldn't the engine sputter, cough extra?

Yep. You'll notice pinging, coughing and a burp. THen dead until the pump cools down and starts working again.

[snowman]

Originally Posted by Dirk

Yep. You'll notice pinging, coughing and a burp. THen dead until the pump cools down and starts working again.

would it throw a code

[Dirk]

Originally Posted by snowman

would it throw a code

Nope....


MAYBE a injector related code, but generally not.

[snowman]

thanks for the help

[Dirk]

THis will help you as well...

99-03 7.3 engine wiring harness diagram... Every 7.3 owner should have...