Mercury Grand Marquis: Won’t Start When Cold → Diagnosis

Extreme weather can be very difficult on your Mercury Grand Marquis.  If there is an issue it often make itself known when conditions are at their worst.  When it’s extremely hot. it’s the cooling system that is put to the test.  In the winter, the vehicle won’t start when it is cold.   There are … Read moreMercury Grand Marquis: Won’t Start When Cold → Diagnosis

Mercury Grand Marquis:  Bad Timing Belt or Chain Symptoms

  A bad timing belt or timing chain can be a serious issue.  If it jumps a tooth, or breaks entirely it can lead to permanent engine damage.  It’s important to know the symptoms of a bad timing belt or chain, so this doesn’t happen to your Mercury Grand Marquis. Timing belts are made out … Read moreMercury Grand Marquis:  Bad Timing Belt or Chain Symptoms

Mercury Grand Marquis: Key Stuck in Ignition → Diagnosis

There are a few easy to fix reasons why your Mercury Grand Marquis’s key might get stuck in the ignition.  It’s often easy to unstick the key.  Whatever you do, don’t start trying to rip it out of the ignition.  That can cause bigger problems. This article is written with the assumption that your key … Read moreMercury Grand Marquis: Key Stuck in Ignition → Diagnosis

Mercury Grand Marquis: Steering Wheel Difficult to Turn

If your Mercury Grand Marquis’s steering wheel is hard to turn, it’s almost always going to be caused by an issue with the power steering system. The power steering system is responsible for taking energy from the engine, converting it to hydraulic pressure, and using that pressure to decrease the amount of force that you … Read moreMercury Grand Marquis: Steering Wheel Difficult to Turn

Mercury Grand Marquis:  Blue Smoke → Causes & Diagnosis

  A very common problem that affects all vehicles (including the Mercury Grand Marquis) is blue smoke coming from the exhaust.  Reasons for blue exhaust smoke include bad valve seals, valve train wear in general, the PCV valve, burning transmission fluid and more. Blue smoke indicates that your Grand Marquis’s engine is burning oil.  The … Read moreMercury Grand Marquis:  Blue Smoke → Causes & Diagnosis

Mercury Grand Marquis: Airbag Light Stays On Diagnosis

Every time you start your Mercury Grand Marquis, the computer system runs a self diagnostic check on all major systems.  If any of these checks fail, you will see a diagnostic warning light on the dash for the corresponding system.  When the airbag system fails this check, you’ll see the airbag light. Depending on the … Read moreMercury Grand Marquis: Airbag Light Stays On Diagnosis

Mercury Grand Marquis Battery Draining Diagnosis

  If your Mercury Grand Marquis’s battery is draining, it’s something that’ll need addressing right away.  If it is draining while your Grand Marquis is off, it’s usually caused by something that is drawing current that shouldn’t be.  If the battery is draining while you’re driving, that is probably going to be the alternator or … Read moreMercury Grand Marquis Battery Draining Diagnosis

Common Reasons Your Mercury Grand Marquis Wont Accelerate

If your Mercury Grand Marquis won’t accelerate, that is a serious cause for concern.  There are a lot of different reasons that can cause this.  Diagnosing the issue can be narrowed down by whether the engine is still revving when you push the gas or not.  There is a section for each scenario with likely … Read moreCommon Reasons Your Mercury Grand Marquis Wont Accelerate