I have a 79 Motorhome with a 440 in it. It will start up run for anywhere from 25 to 45 minutes and then shuts off like the key was turned off, no sputter no cough just dies. After 15-30 minutes it fires up again for another 25 minutes or so and dies again and the process repeats. Changed the coil no difference. Does appear to have fuel in the carb. Any ideas?

Thanks

John S.

 

Change the ECU and make sure it have a good Ground.... Keep us posted...

 

also if it's running the mopar elec ignition, make sure that is grounded and not loose. i had troubles with mine losing ground and the car would shut off instantly, just bam... sometimes at speed which was fun.

 

John -

What Bob said.
And get a good one.
The Jegs or Summit Orange or Silver boxes are pretty solid.

Archer

 

Agreed... I like the Orange Box's...