It's the shoddy harness. As I said before, there are two relays in the setup that are "fighting" each other.
You are going to have to redo the wiring. It's a bit tedious, but you've already spent hours trying to diagnose faulty wiring and changing out relays....
Once you've identified the wire on the pcm connector, the rest is just common sense. ------------------ "Turbo Slug" - '87 Fiero GT. 3800 turbo. - The fastest Fiero in France! @turboslugfiero https://youtu.be/hUzOAeyWLfM
[This message has been edited by Frenchrafe (edited 08-25-2024).]
