Need help!!! No start engine code. 19-O

[ShoNuff91]

91 sho mtx car all of a sudden won't start. Pretty sure I've replaced every sensor multiple times lol. Was running fine before code is. Any ideas? It's my only running vehicle...
19-O, 'No power to EEC processor or failure in PCM internal voltage'

 

[sperold]

Most likely the cam sensor (cylinder identification CID) acting up.
And I think it is simply code 19.
Try short bursts of starter activation, maybe 2 seconds each, for 5 or 6 times, as your system is trying to find #1 Cylinder to lock in your firing order.

Make sure your connector is on correctly, it is a little hard to deal with as it is obscured by the strut tower.

 

[rubydist]

If you are correct that it is code 19, then either the pcm is fried, or there is no power going to the pcm. I would start by checking voltage on the correct pins on the pcm connector.

 

[ShoNuff91]

Just a quit Bump. Changed the cam sensor cars alive! Now that I think about it it has been idling weird randomly. Will update if anything changes. Thanks!

 

[sperold]

Thanks for the feedback.
So often we never know how things went.
Don't be surprised when you need to update, as things sometimes change.