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.
1990 Ford Tempo BaseFACTORY OEM SERVICE PROCEDURE
Retrieving Codes
Service codes are retrieved from the EEC-IV system through the Self-Test connector. Various methods and test equipment may be used to access these codes. The following test equipment may be used:
- Analog Volt/Ohmmeter
- Scan Tool
- STAR Series Tester
- In-Dash CHECK ENGINE or SERVICE ENGINE SOON Light
SELF-TEST CONNECTOR LOCATIONS
| Application | Location |
|---|---|
| Mustang | Left shock tower, near ignition coil |
| Tempo & Topaz | Right rear of engine compartment, near cowl |
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.