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.
Setup for Component Replacement
If any of the following components are replaced or repaired, perform the idle learn procedure. Refer to Q38 Throttle Body: Throttle/Idle Learn .
- The throttle body assembly is replaced.
- The throttle body is cleaned.
- The engine control module (ECM) is replaced.
- The idle air control valve (IAC) is replaced.
FX3 only - If any of the following components are replaced or repaired, perform the crankshaft position system variation learn procedure.
Refer to Crankshaft Position Variation Learn
- The engine assembly is replaced
- The engine control module (ECM) is replaced
- The crankshaft is replaced
- The crankshaft position sensor is replaced
- Any engine repairs which disturb the crankshaft to crankshaft position sensor relationship.
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.
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