3lt td wont run once started stoped?

[jetskidavid]

rebuilt 3lt td new pistons ,rings ,shells ,put back in primed started easy !!

but when started disengaged it stops
any ideas please!!!!!

[Hazzo]

Read this back out loud, if you can make any sense from it your dyslexic. H

[jetskidavid]

Not put in the best way sorry
thinks it the crank sensor want help if poss

[IanB2]

I'd love to help, but I can't make any sense of this.

[jetskidavid]

Engine turns over fires up then when let go of key
It stops
Need help I think it's crank sensor but need second opion or third
Need truck running for sunday

[TonyN]

Have you tried the diagnostic codes?

Otherwise something could be wired wrong so that ECU isn't getting 12v with key in ign position.

[jetskidavid]

I'll check into the codes not sure how to do that yet but will do a search on here thanks for help

[KERRSURF]

Could be a fuel pump sensor.
Or bad earth, check the one at back of engine just below block deck.

[jetskidavid]

Could be a fuel pump sensor.
Or bad earth, check the one at back of engine just below block deck.

Your a life saver thanks I love this forum
It was the earth on the back of the block
Nice one thanks it started straight away once connected
Thanks