(help) truck issues - dodge dakota 3.9l v6 magnum 2003 p1391

[fokeiro]

Im here on the forums a lot for the time and maybe here someone knows about trucks

i have a dodge dakota 03 3.9l v6 magnum 170k on the driveway, few months ago and a bad cam/crank sensor, changed them and been running fine.

2 days ago the problem came back, code p1391 + some others which i fixed ( thermostat changed, os2 bank 1, and a new ignition coil, old one was grounded)

now it backfire a lot and wont speed up, needle goes crazy between 0 and 1000 rmp and makes like about to turn off but doesn't.

Check with my scanner and pulled a p1391 which is lost/intermittent lost of cam/crank

unplug cam while running and engine shutoff.

Could it be the crank sensor went bad (they were odl the cheapest on the autopart)

should i change both for name brand parts ?