⚠️ Optional on some models; standard cluster is analog. Receives serial data from EEC-IV. No odometer programming capability in this era.
Electronic Engine Control Module (EEC-IV) (EEC)1.2 hr R&Rno coding
📍 passenger side firewall, below cowl panel
⚠️ Calibration updates require physical EPROM/PROM chip replacement. Mass Air Flow (MAF) system standard from 1989. Self-test via jumper wire at diagnostic connector.
Air Bag Diagnostic Monitor (ABDM)1.0 hr R&Rno codingwith driver airbag (1990-1993)
📍 under center console, below radio/HVAC stack
⚠️ Driver-side airbag only. Wait 1 minute after battery disconnect before service. Flash codes via instrument panel warning lamp.
Aftermarket tool coverage varies by software version and vehicle build — treat "aftermarket tool" rows as "usually possible" and verify against your tool maker's coverage list before promising a customer. Spot a wrong location or hour? Tell us — corrections ship fast here.
Size-standard part numbers — verify your connector type before buying. Rear blades are model-specific; check the package's vehicle list.
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 1987 Ford Mustang 2.3L I4 and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years.