Spark Check
WARNING: This page is about a different variant/trim than selected.
- Check the EI (low data rate) system (formerly DIS) for fault codes and repair if necessary. Proceed to QUICK TEST in appropriate TESTS W/CODES
article as listed below. If no fault codes are retrieved, check ignition system wiring harness connectors for corrosion and tight fit. See Fig 1. Clean or repair connectors as necessary.
- TESTS W/CODES - EEC 2.5L (for Probe)
- TESTS W/CODES - EEC-IV (3.8L) (for Continental, Cougar, Mustang, Sable, Taurus & Thunderbird)
- TESTS W/CODES - EEC-IV (3.2L SHO) (for Taurus)
- TESTS W/CODES - EEC-IV (3.0L) (for Sable, Taurus, Tempo & Topaz)
- TESTS W/CODES - EEC-V (3.8L) (for Mustang)
- If wiring and connectors are okay, use Neon Bulb Spark Tester (D89P-6666-A) to check for spark at each spark plug wire while cranking engine. If spark is strong and consistent at each spark plug (one spark per crankshaft revolution), ignition system is okay. If spark is not present, go to IGNITION SYSTEMS in appropriate SYSTEM/COMPONENT TESTS
article listed below.
- SYSTEM/COMPONENT TESTS - EEC (2.5L) (for Probe 2.5L)
- SYSTEM/COMPONENT TESTS - EEC-IV (3.0L) (for Sable, Taurus, Tempo & Topaz)
- SYSTEM/COMPONENT TESTS - EEC-IV (3.2L SHO) (for Taurus)
- SYSTEM/COMPONENT TESTS - EEC-IV (3.8L) (for Continental, Cougar, Sable, Taurus & Thunderbird)
- SYSTEM/COMPONENT TESTS - EEC-V (for Mustang)