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[3rd Gen : 96-00]: No crank no start

Old Jul 13, 2024 | 03:50 PM
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Jjwood
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From: Texas
Default No crank no start

Tested ign relay ok.
Tested starter ok.
New fuel pump; Refurb pcm flashed to vin#;
New key cylinder in column; replaced coil pack; good pressure on fuel rail
* Key will not crank starter but can crank bypassing ign relay.
* No spark at plugs; common feed to coil pack is neg voltage; primary & secondary coils test within specs.

Suggestions?¿?
 
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Old Jul 13, 2024 | 05:00 PM
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Jjwood
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From: Texas
Default

Originally Posted by Jjwood
Tested ign relay ok.
Tested starter ok.
New fuel pump; Refurb pcm flashed to vin#;
New key cylinder in column; replaced coil pack; good pressure on fuel rail
* Key will not crank starter but can crank bypassing ign relay.
* No spark at plugs; common feed to coil pack is neg voltage; primary & secondary coils test within specs.

Suggestions?¿?
I just swapped the pcm back to the original. Engine cranked once and then nothing.
Is there some kind of "security" that disabled the starter? How can I disable the security feature?
 
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