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Random stalling

hookedup50

hookedup50

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Location
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I was on another thread earlier, and stopped power probing and started wiggle test. The truck started with click of starter and stalled 5 seconds later. I wiggled around ECM again and it started again for 5 seconds. Now nothing. My ex has my service manual. Is there an ecm diagram for a 97 somewhere in the library?
Thoughts? I’ve got clean grounds, no air in clear tube. Good known pmd. Has anyone had to get a factory cut key? Just brainstorming
 
I know there are diagrams and online service manuals on the DP forum. I can't search for them at the moment but if you still need, I will post up a link later after work.
 
ECM Pin Out Schematics 1997. Have to break them down into parts as a single file is too large.
FWIW, The files say PCM but, we know it as "ECM" semantics, schmantics, Schematics....
 

Attachments

  • Schematic PCM Pin Outs Part 1.pdf
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  • Schematic PCM Pin Outs Part 2.pdf
    821.7 KB · Views: 4
  • Schematic PCM Pin Outs Part 3.pdf
    843.8 KB · Views: 3
  • Schematic PCM Connectors.pdf
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  • Schematic PCM Pin Outs Pic2.pdf
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The anti theft light comes back on when cranking. I’ve owned the truck so long , I don’t remember what is normal. In order to get the wait to start light to stay on, I have to fiddle with the ecm wires. Once I have a 10 second wait to start comes on. It started twice today, stalled after five seconds. I think it’s a security glitch, and always have. Pmd and everything is redundant. Multiple extensions and 2 pmd on sink in bumper.
 
Wasn't there a procedure for the ECM to re-learn the security? can't recall which model it was by I recall something like leaving the key in the run position for something like 10 minutes.
 
I did that 10 minute relearn yesterday.. I have another ecm that im sending out for a tune for ATT turbo. I will hook up software today and see if any soft codes appeared yesterday. Is there any reason not to bypass the security system and then do a relearn?
 
I’m going to bypass that for good measure, after I get the correct resistor. I put a cheapo scanner and the code says cruise control module failure. I need a new multi switch. The good news is that I have been thoroughly through everything, and repaired issues and potential ones
 
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The locksmith said it did, but I prefer advice from here. Never had bad advice. What part of cruise control has to do with injector pump? I added a simple scanner and found my cruise module is bad, I ordered a replacement multi switch, cause I think it’s in there and the contacts are not good here. Im finding corrosion throughout.
 
I don't think the cruise would effect it, but if it has to do with powers and ground it can possibly backfeed into another circuit causing issues for the ECM. anything's possible.
 
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