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The 2003 Mercury Grand Marquis has 1 problems reported for engine blown. Average repair cost is $6,400 at 77,550 miles.Tom Stipp, 04/22/2010. 2008 Mercury Grand Marquis LS 4dr Sedan (4.6L 8cyl 4A) Having owned and driven many late model cars, my 2008 Grand Marquis is one of the very best.Fuel mileage in the upper ... The contact owns a 2003 Mercury Grand Marquis. While driving 5 mph in the driveway, the steering wheel became difficult to turn and failed. The failure almost caused a crash. The vehicle was not ... 2005 – 2006 Ford 4R75E Transmission. Problem – Many 2005 – 2006 Ford vehicles equipped with the 4R75E transmission, may experience excessive slipping in all forward gears. Metal shavings may also be present in the transmission fluid. Solution – Replace forward clutch drum and update ECU with program 06B06. Lack of Response.One problem related to wiring has been reported for the 2003 Mercury Grand Marquis. The most recently reported issues are listed below. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2003 Mercury Grand Marquis based on all problems reported for the 2003 Grand Marquis.If you've found that your MacBook Air's SSD is just too darn small, the folks over at Other World Computing have a kit to help you replace it with a larger one—and then turn the ol... Checkout the Mercury Sable. Sure, the Grand Marquis has its problems but at least it's better than the Sable. The Sable has 208 complaints, an overall PainRank ™ of 8.02, and ranks 11th in reliability. Sable Details. The Grand Marquis ranks 10th in reliability out of 14 Mercury models. Owners have made 264 complaints complaints over 22 model ... 2003. /. location of egr valve sensor. Location of egr valve sensor. 2003 Mercury Grand Marquis. Asked by emission2011 in Neptune, NJ on May 01, 2011. Check engine light came on, a new egr valve was replace after clearing the code vacuum is acceptable, car runs for a day but flashes a code again for in-sufficient egr. flow.what is …The 2003 Mercury Grand Marquis has 4 NHTSA complaints for the engine at 119,750 miles average. CarComplaints.com : Car complaints, car problems and defect information Latest NewsIn this video I change an air suspension compressor on my 2003 Mercury Grand Marquis. The old compressor was working but was making a very loud noise. After...Worst 2004 Mercury Grand Marquis Problems #1: Headlight Failure 2004 Grand Marquis Average Cost to Fix: $300 Average Mileage: 94,000 mi. Learn More ... 2003 Dodge Ram 1500cracked dashboard;Top 2006 Mercury Grand Marquis Problems. Intake Manifold May Crack Leaking Coolant Behind the Alternator. 265 people have reported this. 133. Spring in Seat Belt Buckle May Fail. 141 people have reported this. 64. Transmission Failure Common Due to Front Pump Failure. 137 people have reported this.2003 Mercury Grand Marquis drivetrain problems with 11 complaints from Grand Marquis owners. The worst complaints are broken axle, whine from rear axle.

Step 1: You'll need to your Mercury Grand Marquis's fuse box location . On most makes and models, it's to the left of the driver's seat (when you are behind the steering wheel). Step 2: Once you access your car's fuse box, you'll need to locate the radio fuse. You should see a schematic printed on the door.1 Headlights problem. The contact owns a 2003 Mercury Grand Marquis. The contact stated that while driving at an undisclosed speed, the front driver's and passenger's side headlights failed. As a result, the contact engaged the high beam headlights to continue driving. The vehicle was not diagnosed or repaired.Mercury Grand Marquis GS: 2003 grand marquis cooling fan will 2003 grand marquis cooling fan will not turn on. ive replaced 2 cooling fan motors with shroud and relay, engine coolant temp sensor, ive checked and replaced the fuses, raidiator, and thermostat.Get answers to questions about your 2003 Mercury Grand Marquis at RepairPal. Diagnose problems, find solutions, and get back on the road. 2003 Mercury Grand Marquis - Questions and Answers - RepairPal These type clutch problems in the torque converter also appear very similar to low fluid levels. Clutch problems will also normally cause violent shaking underneath the vehicle and may produce very high heat levels in the transmission. You will normally also notice a very sharp drop in the power output of your engine.

Get answers to questions about your 2003 Mercury Grand Marquis at RepairPal. Diagnose problems, find solutions, and get back on the road. 2003 Mercury Grand Marquis - Questions and Answers - RepairPalGrand Marquis 8-cyl. 114,000 miles. A D V E R T I S E M E N T S. The plastic intake manifold of my 2003 Mercury 4.6L V-8 came apart and let the coolant leak out onto the engine.this car was built ...…

Reader Q&A - also see RECOMMENDED ARTICLES & FAQs. The 4.6L "Modular" V8 engine has. Possible cause: drjjjj, 04/23/2013. 2003 Mercury Grand Marquis GS 4dr Sedan (4.6L 8cyl 4A) 27 of 27 people.