Symptom Chart (Rear End Accessory Drive Belt (READ))
WARNING: This page is about a different car, the 2020 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
| Symptom | Possible Sources | Action |
|---|---|---|
| Noise | Belt condition | Check the belt condition (see visual inspection). |
| Belt fouling cover | Check the belt cover for indications of fouling (this may indicate a pump misalignment), refer to the relevant Service Information | |
| Fuel injection pump failure | Remove the belt, check the fuel injection pump pulley for security. Check the fuel injection pump for excessive resistance to rotation (excessive resistance in the pump will cause the pulley securing nut to loosen as a design feature). Check for diagnostic trouble codes (DTCs) indicating a pump malfunction. | |
| Drive belt does not hold tension | Belt condition | Check the belt condition (see visual inspection). |
| Loss of drive (with no drive to the fuel injection pump, the engine will not run) | Belt broken/stripped teeth | Investigate the cause of the belt breakage/damage (a belt broken at a 45 degree angle normally indicates a shear, a break straight across the belt normally indicates that the belt has been crimped). |
| Drive pulleys loose | Check the fuel injection pump for excessive resistance to rotation (excessive resistance in the pump will cause the pulley securing nut to loosen as a design feature). Check for DTCs indicating a pump malfunction. | |