charging system

[tstroke]

i have a 2001 7.3 and am having battery problems. i know the one battery is shot it did not pass the load test i put on it. but what is bothering me is . i had it running and pulled off the battery cables and the truck dies. not sure if this is normal? i know on gas it will stay running. but the 7.3 shuts down when you un due the battery's. makes me thing im having a charging problem. thanks T

[tstroke]

well any body know? its been a few days on this one,

[rt_hawk]

7.3 needs a constant supply of juice to keep the injectors firing via IDM. IIRC our stock alternators don't put out a whole lot at idle....so yes, sounds normal to me.

[jesilvas]

If you think there's an issue, check the alternator.

[tstroke]

thanks, i thought that might be normal but was not sure.

[ianstew]

it is not normal. just ran out an tested it on my truck. it stays running. test your alternator.