Preliminary Check

WARNING: This page is about a different car, the 1994 Ford Bronco. However, it is still accessible from the selected car via links, so may be relevant.

Perform following preliminary checks:

Visually inspect engine compartment to verify vacuum hoses and spark plug wires are properly routed and securely connected.
Examine all wiring harnesses and connectors for damage.
Ensure ICM is securely fastened to distributor base or cowl.
Ensure battery is fully charged.
All accessories should be off during diagnosis.