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robert3rekab · 02-25-2025, **(Subject: Random shut down )**

(02-24-2025 )Rawze Wrote: - Are you getting oil pressure (a few psi above zero) after several seconds of cranking in the dash?. If so then the ecm is not dead.

I Just tried doing this test but was unable to complete it because now the dash is acting goofy. When I turn the key to "on" Position the oil pressure gage needle jumps up and pegs at 100 lbs And stays there throughout turning the key further and cranking the engine. When I Turn the key back to off position everything stays lit up and beeping... I have to cycle the key back to on and then off again to get everything to shut down. Also, The beeping sequence is different than it used to be.... before, When I turn the key to on I Would count to the 10th beep and on the 10th beep it would double beep and that is when I would crank the engine. Now it just keeps beeping no double beep.

Rawze · 02-25-2025, **(Subject: Random shut down )**

if you simply turn the keyswitch to the on position in the dash (without cranking), then the gauges should sweep.. then all go to normal. if this is not happening then your problems are likely bigger than just an ecm issue.

it could be the infamous prostar problem of the fuses in the fuse panel are getting tarnished and causing havok with everything ...
info: http://rawze.com/forums/showthread.php?t...1#pid12861

that, or you have power issues somewhere.

robert3rekab · 02-25-2025, **(Subject: Random shut down )**

(02-25-2025 )Rawze Wrote: if you simply turn the keyswitch to the on position in the dash (without cranking), then the gauges should sweep.. then all go to normal. if this is not happening then your problems are likely bigger than just an ecm issue.

it could be the infamous prostar problem of the fuses in the fuse panel are getting tarnished and causing havok with everything ...
info: http://rawze.com/forums/showthread.php?t...1#pid12861

that, or you have power issues somewhere.

The oil pressure gage or any other gage for that matter never before swept and then proceeded to peg out like the oil pressure gage is now doing since after whacking on the ECM I'm going to go ahead and replace all the fuses'cause I know you're a proponent of that be always being a big problem. Also never before with the dash and the beeper stay on even after turning the switch off and then having to cycle it back to on and back to off to get everything quiet..... Thank you rawze for sticking with me on this!

robert3rekab · 03-04-2025, **(Subject: Random shut down )**

OK so I replaced every fuse in the dash and nothing has changed oil pressure gauge keeps pegging out still when you turn the key on. no start, ect.

Rawze, I know you have shown many. many people how to do this whackamole trick on the ECM case to verify that it is a bad one. Have You ever seen a situation like mine where after it was tapped on and shut off. the truck would never start up again until the E C M was replaced? Thank you.