Help!!! Shutting off issue

[Matt Conner]

I checked the resistance in the wiring harness cold. Then checked it after it shut off and no change.
New distributor in No change
Redid the ground cable and checked positive cable and all grounds- no change
Installed an o2 sensor- no change


I have no idea what else to look for

 

[89GMCJOHN]

Buddy , you want to watch the voltage to the dist , not measure the resistance .....when it dies you want to see what that +12 feed at the dist reads.

 

[Matt Conner]

Buddy , you want to watch the voltage to the dist , not measure the resistance .....when it dies you want to see what that +12 feed at the dist reads.

Which pin in the connector to the wiring harness is the power in wire


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[Matt Conner]

Could it possibly be in the ECM?

 

[Schurkey]

Could it possibly be in the ECM?

Yes. Not the typical cause, but a possibility.

By all means, verify voltage to the ignition coil and distributor when the engine stalls. They're both supplied by the same wire, but you need to assure that the wire isn't damaged--pinched or otherwise broken so that it makes intermittent contact. Or is connected to power in such a way that when it warms-up the circuit is opened.

 

[Matt Conner]

Well guys, good news. I swapped the ECM For one I got at a local boneyard, and it made it home with no issues. No shutting off, stalling, stumbling. Nothin. I believe i got the issue nipped

 

[McBroom]

Well guys, good news. I swapped the ECM For one I got at a local boneyard, and it made it home with no issues. No shutting off, stalling, stumbling. Nothin. I believe i got the issue nipped

I'd drive it for a couple hours to be sure. I hope its problem solved.

The Blue Mule

 

[Matt Conner]

I'd drive it for a couple hours to be sure. I hope its problem solved.

The Blue Mule

I’ve put 20 miles on it since I installed it and no issues so far

 

[PlayingWithTBI]

Congrats, are you using the same EPROM or did the ECM come with its own calibration?

 

[Matt Conner]

Congrats, are you using the same EPROM or did the ECM come with its own calibration?

I got a ECM out of a 91 1500 with the 5.0