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.
1987 Ford Econoline E250, Van Display, 5.0 NFACTORY OEM SERVICE PROCEDURE
Clearing Continuous Memory Codes
- Perform KEY ON/ENGINE OFF SELF-TEST. When the first service code appears, exit SELF-TEST program by disconnecting STAR tester or by removing jumper wire from Self-Test Input (STI) pigtail. Exiting QUICK TEST in this manner will clear all codes stored in continuous memory.
- Repeat KEY ON/ENGINE OFF SELF-TEST. If code output is 11-10-11, go to CONTINUOUS MEMORY CODES TO BE TESTED. If code output is not correct, check Self-Test Input (STI) circuit for short to ground. Repair short and repeat CLEARING CONTINUOUS MEMORY CODES step.
Factory Service Tools
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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.
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