Chart 6
WARNING: This page is about a different variant/trim than selected.
- Unique Idle Concerns: Low/Slow Idle
- Stalls/Quits: Deceleration
SYMPTOM CHART - LOW/SLOW IDLE AND DECELERATION
| SYSTEM/COMPONENT | REFERENCE (Pinpoint Test unless noted) |
|---|---|
| Verify the fuel filler cap is correctly tightened or the capless fuel tank filler pipe is correctly sealed. | Visual. |
| Automatic Transmission (stalls/quits on deceleration) | REFER to the appropriate Automatic Transaxle/Transmission article to diagnose the torque convertor operation concerns. |
| Fuel Delivery System | GO to PINPOINT TEST HC . |
| Intake Air System | GO to PINPOINT TEST HU . |
| Charging System | REFER to the appropriate Charging System article and carry out the Inspection and Verification to continue diagnosis. |
| Universal Heated Oxygen Sensor (HO2S) (Edge, Escape, E-Series 4.6L, E-Series 5.4L, Expedition, Explorer, F-150, Fusion 2.5L, Fusion 3.0L, Flex, F-Series Super Duty, Mariner, Milan, MKS, MKT, MKX, Mustang, Navigator, and Taurus) | GO to PINPOINT TEST DZ . |
| Base Engine | REFER to the appropriate Engine System and carry out the Inspection and Verification to continue diagnosis. |
| Additional Testing | GO to PINPOINT TEST Z . |