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 Bronco II RWD, Standard, M5OD-R1FACTORY OEM SERVICE PROCEDURE
Yes, On-Demand Pass Code 11 Received
If On-Demand pass code 11 is received and:
- If CHECK ENGINE or SERVICE ENGINE SOON light was on when the vehicle arrived for service, go to: - STEP 8.0: CONTINUOUS CODE-TO-TEST CHART . and perform appropriate pinpoint test before addressing any other symptoms.
- If engine runs rough or idles rough, go to either: - Non DIS/EDIS Ignition: TEST S - SYSTEM CHECK, step 1) - DIS/EDIS Ignition: STEP 3.1: CHECK FOR CONTINUOUS CODES
- If engine does not start, go to either: - TEST A - NO START (NON-EDIS IGNITION) , step 1) - TEST AA - NO START (EDIS IGNITION ONLY) , step 1)
- If the above 3 symptoms are not present, go to either; - Non-Diesel: STEP 4.0: COMPUTED TIMING CHECK - Diesel: STEP 5.0: PERFORM ENGINE RUNNING (KOER) SELF-TEST
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.