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.
Visual Inspection: Notes
This inspection will identify modifications or additions to the vehicle operating system that may affect diagnosis.
Inspect vehicle for non-Ford approved add-on devices such as:
- Electronic add-on items:
- powertrain control module enhancements
- turbo boost enhancements
- sensor modifications
- air conditioning
- generators (alternators)
- engine turbos
- cellular telephones
- cruise controls
- turbo engine brake
- CB radios
- linear amplifiers
- backup alarm signals
- electronic brakes for trailer towing
- computers
- Vehicle modifications.
These items, if not installed correctly, will affect powertrain control module (PCM) or transmission function. Pay particular attention to add-on wiring splices in the PCM harness or transmission wiring harness, abnormal tire size or axle ratio changes.
Leaks; refer to LEAKAGE INSPECTION .
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.