Section 118 (Engine Controls - Trouble Shooting - No Codes - CNG, Flex-Fuel & Gasoline)
WARNING: This page does not describe the selected car, but rather 30 other vehicles, including the 2003 Mercury Sable, 2003 Mercury Mountaineer, 2003 Mercury Marauder, 2003 Mercury Grand Marquis, and 2003 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
- Introduction
- Symptoms
- Notes
- Symptom Diagnosis
- Rough Or Rolling Idle, Stalls, Misses, Hesitation Or Surge
- Hard Start/Long Crank Or Erratic Start/Crank
- No-Start/Normal Crank
- Slow Return To Idle
- Fast Idle Or Diesels/Runs On
- Low Idle (Stalls On Deceleration)
- Backfires
- Lack/Loss Of Power
- Spark Knock
- Poor Fuel Economy
- Vehicle Fails Emissions/Emissions Compliance
- Hissing Sound When Removing Fuel Cap
- Excessive Fuel Odor
- Unable To Refuel Vehicle
- Warning Indicator Lights
- Notes
- Preliminary Check
- Pickups With Power Takeoff (PTO) & MIL Concern
- MIL Always On When Engine Is Running, No DTCs Are Present
- TCIL Always On When Engine Is Running, No DTCs Are Present
- MIL Inoperative (Including Bulb Check When Engine Is First Started)
- Transmission Control Indicator (TCIL) Inoperative
- Temperature Warning Indicator Light Or Temperature Gauge Inoperative (Models With CHT Sensor Only)
- SIL Always On Or Inoperative
- Fuel Cap Indicator Light Always On Or Inoperative
- Additional Intermittent Testing
- Automatic Transmission Down Or Upshift, Or Engagement Concern
- Speedometer Or Tachometer Inoperative
- High Oil Consumption
- Electric, Hydraulic Or VISCTRONIC Cooling Fan Inoperative
- Electric, Hydraulic Or VISCTRONIC Cooling Fan(S) Always On
- Exhaust Smoke
- Fuel Odor
- Engine Noise
- Climate Control (Lack Of A/C Cooling, A/C Always On Or A/C Inoperative)
- Exhaust Odor (Sulfur Smell)
- INTERMITTENTS
- Wiring Diagrams