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Question posted by jorgedcolo on June 17th, 2011

My Engine Light Came On On My 2005 Expedition What Does That Mean?

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Answer #1: Posted by dandaman1200 on August 4th, 2011 12:28 PM

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dandaman1200

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The check engine light comes on when the sensors in your car pick up something that isn't normal. The five most common reasons for a check engine light to come on are as follows.

1. Their is a faulty spark plug. Check your spark plugs for any signs of damage, and replace the ones that are damaged.

2. The gas cap is loose. Tighten the gas cap when the car is off, then crank it back up to see if the check engine light goes off.

3. The fuel injector is clogged. If this is the case, you'll notice that it takes longer for the car to increase speed when you push down on the accelerator. You should get your fuel system flushed regularly to prevent this from happening.

4. The O2 sensor is faulty. If this is the case you will notice a decrease in gas mileage, and find it hard for the car to pick up speed.

5. The exhaust gas recirculation valve is dirty. If this is the case you will notice a strong smell of gas when you crank up the gas.

If none of this helps take it to a mechanic and ask them to run a diagnostic test on it, and they will find the problem.

Related Manual Pages

Owner's Manual - Page 3

... Company 3 2005 Expedition (exd) Owners Guide (post-2002-fmt) USA (fus) Table of Contents Maintenance and Specifications Engine compartment Engine oil Battery Engine Coolant Fuel information Air filter(s) Part numbers Refill capacities Lubricant specifications 323 325 326 330 332 338 352 353 354 357 Accessories Index 363 366 All rights reserved. Reproduction by any means, electronic...

Owner's Manual - Page 10

... illuminate when a problem exists with one of your vehicle to cause expensive repairs. If any light remains on after the engine is occurring which could 10 2005 Expedition (exd) Owners Guide (post-2002-fmt) USA (fus) If the light is blinking, engine misfire is started indicates the On Board Diagnostics System (OBD-II) has detected a malfunction...

Owner's Manual - Page 11

...and deceleration) and have the system ABS 11 2005 Expedition (exd) Owners Guide (post-2002-fmt) USA (fus) On vehicles equipped with the brake system warning light on is turned to a dealer at this ...braking performance may occur. Driving a vehicle with a message center, "ENGINE FAILSAFE MODE" or "CHECK ELECTRONIC THROTTLE CONTROL" will BRAKE momentarily illuminate when the ignition is ...

Owner's Manual - Page 12

... Pressure Monitoring System in the Tires, Wheels and Loading chapter. Air bag readiness: If this chapter). 12 2005 Expedition (exd) Owners Guide (post-2002-fmt) USA (fus) A chime will also sound when a malfunction in this light fails to fasten your tire pressure is low. Charging system: Illuminates when the battery is working. When...

Owner's Manual - Page 13

...the Driving chapter. AdvanceTrac (if equipped): Illuminates when the AdvanceTrac with this light on may occur. If the light remains on, have the system serviced immediately, refer to flash or remains ... 13 2005 Expedition (exd) Owners Guide (post-2002-fmt) USA (fus) Refer to come on , have the transmission serviced soon, or damage may cause the Service engine soon warning light to ...

Owner's Manual - Page 177

...; Front crash severity sensor. • Restraints Control Module (RCM). • Restraint system warning light and back-up tone. • The electrical wiring for 30 minutes after turning the vehicle off...safety belt pretensioners, front safety belt usage sensors, driver seat position sensor, and indicator lights. 177 2005 Expedition (exd) Owners Guide (post-2002-fmt) USA (fus) If the power 3rd...

Owner's Manual - Page 189

...unbuckled To reduce the risk of the light turning on for the one seating ...ENGINE) 2. The driver and front passenger BeltMinder features can be disable/enabled during the same ignition cycle if the occupant buckles and remains buckled for approximately 30 seconds. For the seating position being disabled, at a moderate speed, buckle then unbuckle the safety belt. 189 2005 Expedition...

Owner's Manual - Page 229

... that may be used for service on cars, SUVs, minivans and light trucks. P: Indicates a tire, designated by the Tire and Rim ... an example of the tire and also provides a U.S. You may mean it is not required by either ETRTO (European Tire and Rim Technical...of all tires because it is designated by federal law. 229 2005 Expedition (exd) Owners Guide (post-2002-fmt) USA (fus) Note...

Owner's Manual - Page 256

... 1. Warning lights illuminated. Always open the garage door before or during starting a fuel-injected engine, avoid pressing the accelerator before you have difficulty starting the vehicle, refer to start the engine. Driving STARTING Positions of radio noise. This system meets all electrical circuits operational. When starting . For more instructions. 256 2005 Expedition (exd...

Owner's Manual - Page 258

... as the engine starts. Driving 5. When the engine starts, release the key. 258 2005 Expedition (exd) Owners Guide (post-2002-fmt) USA (fus) The key will return to 4 (START). Excessive cranking could damage the starter. 1. Turn the key to 3 (ON) without pressing the accelerator pedal and release as soon as the engine starts. light may not...

Owner's Manual - Page 260

...light. Anti-lock brake system (ABS) On ABS-equipped vehicles, a noise from the hydraulic pump motor and pulsation in the steering wheel while braking, the vehicle should be inspected by a qualified service technician. 260 2005 Expedition... information for scheduled maintenance. Driving Important ventilating information If the engine is idling while the vehicle is stopped for a long period...

Owner's Manual - Page 283

...2005 Expedition (exd) Owners Guide (post-2002-fmt) USA (fus) Avoid excessive speed because vehicle momentum can work against you and cause the vehicle to become stuck to the point that assistance may be able to back out the way you came...water If you experience excessive engine power reduction. Drying can lose traction in...(TPMS), the system indicator light may stall. avoid water higher...

Owner's Manual - Page 329

... and fuel economy requirements of the International Lubricant Standardization and Approval Committee (ILSAC), comprised of U.S. Use SAE 5W-20 engine oil. They are designed for this trademark symbol conforms to the appropriate schedule listed in scheduled maintenance information. Change your engine application. 329 2005 Expedition (exd) Owners Guide (post-2002-fmt) USA (fus)

Owner's Manual - Page 340

.... Care should be taken to you and others: Read and follow all the instructions on /off . 340 2005 Expedition (exd) Owners Guide (post-2002-fmt) USA (fus) Stay outside your vehicle and do not leave the...fumes. Maintenance and Specifications When refueling always shut the engine off your engine when you are near the filler neck. Fuel vapor is pumped into an ungrounded fuel container.

Owner's Manual - Page 363

...Ford Accessories purchased along with your new vehicle limited warranty. This means that are covered for whichever provides you the greatest benefit: &#...engineering and safety specifications. Exterior style Bug shields Deflectors Fender flares Front end covers Grille inserts Headlamps, fog lights and Daytime Running Lamps (DRLs) Running boards Splash guards Step bars Wheels 363 2005 Expedition...

Owner Guide 3rd Printing (Spanish) - Page 587

...8226; Front crash severity sensor. • Restraints Control Module (RCM). • Restraint system warning light and back-up tone. • The electrical wiring for 30 minutes after the ignition switch is... belt pretensioners, front safety belt usage sensors, driver seat position sensor, and indicator lights. 177 2005 Expedition (exd) Owners Guide (post-2002-fmt) USA (fus) The power fold down...

Owner Guide 3rd Printing (Spanish) - Page 693

... the Tire Pressure Monitoring System (TPMS), the system indicator light may be limited. Note: If your vehicle is equipped ... Sand When driving over sand, apply the accelerator 283 2005 Expedition (exd) Owners Guide (post-2002-fmt) USA (...when you experience excessive engine power reduction. Once through water, determine the ...up to back out the way you came if you may illuminate depending on how...

Owner Guide 3rd Printing (Spanish) - Page 739

... appropriate Motorcraft oil filter (or another brand meeting Ford specifications) for your engine application. 329 2005 Expedition (exd) Owners Guide (post-2002-fmt) USA (fus) and Japanese automobile manufacturers. To protect your engine's warranty use supplemental engine oil additives, cleaners or other engine treatments. Do not use Motorcraft SAE 5W-20 or an equivalent 5W-20...

Owner Guide 3rd Printing (Spanish) - Page 750

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Owner Guide 3rd Printing (Spanish) - Page 773

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