Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1985 Ford Mustang SVOFACTORY OEM SERVICE PROCEDURE
Fuel Injection System Specifications - HCFI: Specifications
3.8L (EEC-IV) HIGH PRESSURE CFI SPECIFICATIONS
| Application | Specification | |
|---|---|---|
| Throttle Position Sensor (TPS) | Non-adjustable (0.6-1.1 volt) | |
| Hot (Slow) Idle Speed (RPM) | ||
| Exc. Capri & Mustang | 500-600 RPM | |
| Capri & Mustang | 475-575 RPM | |
| Cold (Fast) Idle Speed | ||
| Low RPM | N/A | |
| Cam Step | N/A | |
5.0L (EEC-IV) HIGH PRESSURE CFI SPECIFICATIONS
| Application | Specification | ||
|---|---|---|---|
| Throttle Position Sensor (TPS) | Non-adjustable (0.6-1.1 volt) | ||
| Hot (Slow) Idle Speed (RPM) | 550 | ||
| Cold (Fast) Idle Speed | |||
| Low RPM | |||
| Exc. High Output | 2200 RPM | ||
| High Output | 2400 RPM | ||
| Cam Step | Highest Step | ||
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.