Preliminary Check

WARNING: This page does not describe the selected car, but rather 15 other vehicles, including the 1993 Mercury Tracer, 1993 Mercury Topaz, 1993 Mercury Sable, 1993 Mercury Grand Marquis, and 1993 Mercury Cougar. However, it is still accessible from the selected car via links, so may be relevant.

Perform following checks:

Inspect engine compartment to ensure all vacuum hoses and spark plug wires are properly routed and securely attached.
Check all wiring harness connectors for damaged pins and loose or broken conditions.
Ensure ICM mounting screws are tight.
Ensure battery is fully charged.
Ensure all accessories are off during diagnosis.