Excessive Fuel Consumption: Vitara
- Faulty spark plugs. See IGNITION CHECKS in BASIC DIAGNOSTIC PROCEDURES article.
- Fuel pressure out of specification. See FUEL PRESSURE under FUEL SYSTEM in SYSTEM & COMPONENT TESTING article.
- Faulty fuel injector(s). See B-2: FUEL INJECTOR CIRCUIT INSPECTION under CIRCUIT TESTS in BASIC DIAGNOSTIC PROCEDURES article.
- Faulty Engine Coolant Temperature (ECT) sensor. See ECT sensor related DTCs in appropriate SELF-DIAGNOSTICS article.
- Faulty Throttle Position (TP) sensor adjustment. See THROTTLE POSITION SENSOR in ON-VEHICLE ADJUSTMENTS article.
- Faulty Mass Air Flow (MAF) sensor. See MAF sensor related DTCs in appropriate SELF-DIAGNOSTICS article.
- Exhaust Gas Recirculation (EGR) system malfunction. See EGR valve related DTCs in appropriate SELF-DIAGNOSTICS article.
- Thermostat malfunction.
- Check for low engine compression. See MECHANICAL INSPECTION under PRELIMINARY INSPECTION in BASIC DIAGNOSTIC PROCEDURES article.
- Check brake system for dragging brake. See appropriate DISC & DRUM article in BRAKES.
- Check for slipping clutch. See appropriate FWD or RWD article in CLUTCHES.
- Improper tire pressure. Check pressure and inflate as necessary.