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Mercury preventive maintenance repair questions and answers

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  • AutoMD Member
    AutoMD Member - 2006 Mercury Grand Marquis - Preventive Maintenance - 11/6/2013
    My head light will not work on low beam.
    The only way i have any lights is to hold the turn/high beam lever on and hold it while driving. this keeps my light on in 'High" beam. It is interesting to notice that when if is fairly cold outside (50's) the regular beams come on and stay until engine is warmed ...
    • HouseCallAuto
      11/6/2013 HouseCallAuto
      Replace the lighting control module. Probability here is near 100%. You can google it to see location of module in your car.
  • ihland
    ihland - 1993 Mercury Grand Marquis - Preventive Maintenance - 9/2/2013
    It keeps blowing fuses. Why? Turn signals don't work. Brake lights don't work.
    The mechanic says that I could possibly need a turn signal switch. Is this switch inside of the steering column? Diagnosis is not positive?
    • diyautoelectric
      9/1/2013 diyautoelectric
      it blows fuses because there is a short. turn signal switch is inside of the steering column. If it blows as soon as you put a fuse in it , you can try disconnecting things till it stops blowing the fuse . you need to isolate which wire is shorted of if it is a switch that is bad
    • bear.1216
      9/2/2013 bear.1216
      You should also check out the rear bulbs. Excessive corrosion in the bulb sockets can cause shorts. If your vehicle is wired for trailer lights check that wiring as well.
  • billnjane
    billnjane - 2005 Mercury Montego - Preventive Maintenance - 8/28/2013
    At 107 K miles, I would like to inspect//replace the serpantine belt on my 2005 Mercury Montego. Question: do I have to remove the fendor splash shield? If so, can I do this without a "Lift"....I have Jack stands, floor jacks, and bottle jacks. Thanks for any ...
    • wbrockstar
      8/28/2013 wbrockstar
      Yes removing the splash shield is the best way to gain access.Its best if you have 1 person working on the upper pulleys while youre lying on the ground to get to the lower pulleys.Lift the vehicle up just high enough so you can work in a more comfortable position.You dont need a lift,but use those jack stands for sure,cause theyll save your life
  • ejstrom
    ejstrom - 2007 Mercury Grand Marquis - Preventive Maintenance - 7/5/2013
    Has there been a problem changing spark plugs
    I have heard that spark plugs have broken off in the block when being removed for replacement. Is this true!
    • CVO
      7/5/2013 CVO
      I help AutoMD for the last 3 years, i heard one case of a broken off spark plug in the block.
  • gaelynnvarney
    gaelynnvarney - 1990 Mercury Sable - Preventive Maintenance - 6/19/2013
    Power steering goes out, water coolant leaks,
    when cold, you can hear a whine and a squeal. when it is warm, power steering goes out intermittenly,then when I park, all the coolant leaks out from underneath. could it be a power steering hose or leaky pump? Power steering fluid is full. Just coolant leaks like a ...
    0 answer
  • huntington.ashley1
    huntington.ashley1 - 2002 Mercury Mountaineer - Preventive Maintenance - 5/26/2013
    When I started my Mountianeer, there was a clicking noise in the back trunk area.
    I took off the paneling in the back to locate it. When the following connection ( 1f2t-14a464 ga-000) was unplugged, it stopped. This did not affect the driving. BUT I can not find out what that piece controls. Can you be help me!!! Thanks!
    • huntington.ashley1
      5/26/2013 huntington.ashley1
      This is actually a 2003. SORRY!
    • HouseCallAuto
      5/26/2013 HouseCallAuto
      Maybe a power antenna? When they go bad they ratchet / click and if it is not an antenna, maybe this is a connector that attaches to a blend door actuator for your optional rear heat / ac unit. When the BDA goes bad it clicks.
  • djv103061
    djv103061 - 2007 Mercury Montego - Preventive Maintenance - 5/14/2013
    I cannot locate the vertical headlight adjustment screw
    The owners book just points to the location but I can't see the screw
    0 answer
  • everydayangel0414
    everydayangel0414 - 1994 Mercury Cougar - Preventive Maintenance - 3/22/2013
    Need help figuring this out. My local mechanics are stumped on this one.
    I have a 1994 Mercury Cougar XR-7 6 cylinder. I have been having the car serviced and parts replaced after years of neglect by sister who had the car before me. The catalytic converter was broken and replaced. The car recently had a much needed tune up. Then the ...
    • HouseCallAuto
      3/22/2013 HouseCallAuto
      Replace the throttle position sensor. Probability is greater than 75% here. It is a cheap part and easy to change, just do it.
      3/27/2013 everydayangel0414
      I replaced the the throttle position sensor and helped some, but still had some issues with idle and trying to stall. I took it a better shop. They needed to replace a cracked crank house sensor and rebuilt the distributor. The vehicle runs better. They said that the mass air flow sensor maybe bad. The tech disconnected it and the car ran great. Should I just clean it or better to replace it?
      3/30/2013 tonytiger35
      Start with cleaning the MAF first, if your car still has the crappy idle replace the MAF, and while the car is running tap on the MAF and if the idle changes then cleaning it will not do anything.
    • spanionneo
      3/22/2013 spanionneo
      The vibration is usually one of the mounts that is internally damaged. They need to be checked thoroughly. ( use a long bar to move engine around while car running and watch changes in vibration to frame.)
      I say take your car to more sophisticated shop. They need to watch, on a high end scanner, waves of certain sensors.
      3/27/2013 everydayangel0414
      The mounts were checked and was told that they are ok, but due to the age of the vehicle. They should be replaced sooner than later.
  • tschulz711
    tschulz711 - 1998 Mercury Sable - Preventive Maintenance - 3/15/2013
    Should I remove the fuel injectors, even though there might be fuel pressure in the fuel rail? What will happen?
    There is a fuel pressure release valve on the fuel rail itself but when I pressed it down no pressure or gasoline came out. (I pressed fairly hard too). So I dont know if there is fuel pressure or not with in the fuel rails. Im scared that if there is and I remove ...
    • CVO
      3/15/2013 CVO
      Remove the fuel pump relay ( 5 prongs relay ) out of their socket and start the engine until the fuel gas ran out.
    • Oxides
      3/15/2013 Oxides
      might get a little spray. wear glasses. you'll be ok unless you turn the key on. once pressure is relieved nothing is going to come out of the tank. your fuel rail will probably drain out. but that's not a big deal.
      i recommend keeping a fire extinguisher around when working with the fuel system.
    • Oxides
      3/15/2013 Oxides
      god i hate spammers.
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      3/15/2013 yweosdf

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      3/15/2013 HouseCallAuto
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  • so3ny5a
    so3ny5a - 2002 Mercury Grand Marquis - Preventive Maintenance - 2/26/2013
    How do I Flush the Radiator?
    • HouseCallAuto
      2/26/2013 HouseCallAuto
      Well, it depends on how bad it looks. If it looks all rusty and brown and nasty, replace the radiator is best option, but if you don't want to do that, remove the thermostat and reinstall the water outlet housing. Put a garden hose into the top of the radiator and let it overflow. At this point you also have opened the drain valve on the bottom of the radiator and the engine is running. let the water run out until it runs clear. After it is all clear, reinstall a new thermostat, add 50/50 coolant and water mix.
  • MercCougar2000
    MercCougar2000 - 2000 Mercury Cougar - Preventive Maintenance - 1/3/2013
    What causes the headlights, dashlights, cabin lights (basically any electrical item that has lights) to flicker?
    Flickering occurs when the light switch is turned "ON", whether parking lights or headlights, with or without high beams, or interior cabin lights. Lights flicker rapidly, bright/dim.
    • CVO
      3/16/2011 CVO
      Inspect the headlight switch, replace it as necessary.
      Headlight switch directs current to the headlights and running lights to turn them on or off.
      When not replaced, headlights will run continually or not function, potentially causing premature headlight failure and/or safety issues.
    • b_ballboy_2013
      1/3/2013 b_ballboy_2013
      check the belt/belt tensioner if te tensioner is jumping it could cause the lights to be running on the battery and the altenator that is why they flash when the altenator takes hold of the belt they flash and if you watch close your lighs will flash with the tensioner jumping i just replaced my belt and it stoped but could be falty tensioner.....fix soon if it is cause it will short out altenator which is lik $125 plus
  • jreightler
    jreightler - 2002 Mercury Sable - Preventive Maintenance - 1/2/2013
    When slowing down the enterior lights come on as if car is dying, then it goes on. Sometimes when idoling it dies?
    It happened first time when it was cold and snowing only time it has happened when the car is slowing down or idoling. All warning lights come on, and then it picks up and goes on. It dies when it is idoling at times. Then it starts back up. Sometimes it hesitates ...
    0 answer
  • derrickriley
    derrickriley - 2006 Mercury Milan - Preventive Maintenance - 12/19/2012
    Mercury Milan will not start
    The car was riding well last night. I stopped home to drop my kids off then decided to go to the store. When I went to start the car I wouldn't start. All I hear is a buzzing/repetitive clicking noise, the anti theft light is flashing. I thought is was the battery ...
    • toddio125
      12/18/2012 toddio125
      A bad battery can still be the cause of your concern. The bulbs in the car require very little amperage to light but the starter requires a lot. If the battery cannot supply the required amperage to the starter it will not start. The buzzing could be caused by low voltage to the various electronic modules caused by a 'brown out' when you try to start the car. I would try to jump start the vehicle first. If this works, replace the battery.
      If that does not work it can get complicated quickly... GEM module, PATS, P/N switch... lots of individual tests on many components would need to be checked. They are quick checks with the right diagnostic equipment, but not suited to the do it yourselfer.
      12/18/2012 derrickriley
      Thank you for the response. So if it is the battery and I replace it, does that fix the issue of the buzzing? I really hopes this helps as this car is my alone source to work😔
    • toddio125
      12/19/2012 toddio125
      It could be. The buzzing could be caused by a relay or other electrical component that is not receiving the correct voltage and or amperage required for proper operation. Before you replace the battery, try to get a friend to help jump start the car. If it starts, leave the cables connected for a moment and see if all the symptoms subside. If all is normal, replace the battery.
  • derrickriley
    derrickriley - 2006 Mercury Milan - Preventive Maintenance - 12/18/2012
    Mercury Milan will not start
    The car was riding well last night. I stopped home to drop my kids off then decided to go to the store. When I went to start the car I wouldn't start. All I hear is a buzzing/repetitive clicking noise, the anti theft light is flashing. I thought is was the battery ...
    0 answer
  • derrickriley
    derrickriley - 2006 Mercury Milan - Preventive Maintenance - 12/18/2012
    Mercury Milan will not start
    The car was riding well last night. I stopped home to drop my kids off then decided to go to the store. When I went to start the car I wouldn't start. All I hear is a buzzing/repetitive clicking noise, the anti theft light is flashing. I thought is was the battery ...
    0 answer