alternator died today and now it will not start unless I dump a lil gas in the throttle body. then it runs fine, until you shut it off. tried holding it to the floor and still wont start. not sure if it overcharged and fried a relay. any help appreciated

 

sorry guys this is on a 2000 5.9 1/2 ton

 

Sounds like a fuel problem.

 

figured that, but you can drive it around and it runs fine just wont start without a prime. and other ideas??

 

and this started only after alternator died ? otherwise it was fine before hand.

sounds like it might be a problem within the ASD (automatic shutdown) system. it generally gives you fuel pressure at ignition on, so it will start, and then if it doesn't get the proper crank position sensor signals and cam position sensors, which indicates the engine is running, then it cuts off the fuel pump.

sounds like your fuel pump is not priming at start. you might begin with a pressure test at the fuel rail for 49psi, or research the electrical side more....

 

Replace the Alt and it should fix the problem

 

new alt installed yesterday, also new Battery since alt caused it to start leaking I think it overcharged. and could of burnt something. where is the ASD and is it a relay. where can I read more about it.

 

try this.
http://www.rm-indy.com/wavefiles/2001ramsrvcmanual.zip

some technical stuff.
https://dodgeforum.com/forum/dodge-r...questions.html

and lots of google hits.


this one talks about the pcm turning the ground on/off to the ASD relay, and suggests testing for bad PCM by running a true ground to the ASD.
http://www.2carpros.com/forum/2000-d...-vt230629.html