Finding the serpentine belt on a Ford Fusion requires identifying key pulleys and referencing the engine-specific routing diagram. Follow these steps:
Primary Location in Engine Bay
The serpentine belt resides on the front side of the engine, connecting multiple accessories via pulleys. Its exact path depends on your Fusion's engine size (2.5L, 1.5L EcoBoost, or 2.0L EcoBoost).
Critical Identification Features
- Accessory Connections: Traces a path around the crankshaft pulley (largest, center-bottom), alternator, power steering pump, and A/C compressor.
- Tensioner Pulley: Look for the spring-loaded tensioner (typically top-right for 2.5L engines) maintaining belt tightness.
- Width & Ribbing: 6-8 ribs (≈1/2 inch wide) on smooth pulley surfaces.
Using the Routing Diagram
Locate the factory diagram sticker affixed to your Fusion:
- Hood Decal: Check underside of hood (common on 2013-2020 models).
- Radiator Support: Inspect top crossmember near latch (2010-2012 models).
- Diagram Details: Shows exact pulley sequence and tensioner location with arrows indicating belt direction.
Common Routing Patterns
- 2.5L Engine: Clockwise from crankshaft → tensioner → alternator → power steering → A/C compressor → idler pulley.
- 1.5L/2.0L EcoBoost: More complex path; water pump pulley engagement requires diagram reference.
Inspection Safety Protocol
- Ensure engine is OFF and cool
- Disconnect negative battery terminal
- Verify belt integrity: Cracks >1/8 inch deep, missing ribs, or glazing indicate replacement need
Always replace using the engine-specific diagram; incorrect routing causes accessory failure. Consult your owner's manual for belt specifications.