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Mercury preventive maintenance repair questions and answers

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  • terry dais
    terry dais - 2002 Mercury Mountaineer - Preventive Maintenance - 6/14/2011
    I have a 2002 mercury mountaineer the air compressor works fine .it;s doing what it is suppose to .it is blowing out hot
    it is blowing out hot and cold air out the vents checked all doors working fine even with dail on cold it still blow hot and cold it morer hot than it is cold .you can feel the cold air when you put your hand in front of the vent .also hot air to
    • Bill
      6/11/2011 Bill
      It is either insufficient freon in compressor or gate valve on heater core not closing allowing hot coolant into system, thus no cooling after engine warms up.
    • HouseCallAuto
      6/11/2011 HouseCallAuto
      The system is low on refrigerant 4 sure.
      6/11/2011 terry dais
      it has plenty of refrigerant the lines get cold and sweat off like it suppose to it just blow hot and cold air
    • HouseCallAuto
      6/12/2011 HouseCallAuto
      I will acknowledge the system not being low on refrigerant when you say you attached an AC manifold set and read the high and low side pressures. Until you do that I stand by my internet diagnosis based upon what you say is happening. Is the AC compressor remaining engaged or is it cycling on and off?
      6/13/2011 terry dais
      yes the compressor stay engaged when you cut it on .its more like it is blowing hot air on one side and cold air on the other
    • HouseCallAuto
      6/14/2011 HouseCallAuto
      If it has dual zone climate control (separate temperature controls for driver and passenger area) then you have a stuck / failed blend door actuator on the side that will not change the temperature. Try smacking the bottom of the heater / AC housing.
      6/14/2011 terry dais
      no it does not have a dual zone control it has a control ffor the fan turn dail one for hot and cold red and blue and the other one for ac and different position to set
    • HouseCallAuto
      6/14/2011 HouseCallAuto
      OK, so, are you able to either attach a gauge set to read the low and hi pressure, or are you able to humor me and add about a half a pound of refrigerant? I know you said the system "has plenty of refrigerant" but that is not diagnostics.
  • Stacey
    Stacey - 1997 Mercury Mountaineer - Preventive Maintenance - 6/10/2011
    Why does my truck periodcally shut off & restart when I reset the fuel switch.
    happens after long period of driving,mileage 150k,kept in great shape, new plugs,batt,starter,alt,radiator,tires, warning lights,YES i keep low fuel alot, just happen 3x (summer) everyone tell me fuel not getting thru & propbaly alot of trash???
    • HouseCallAuto
      6/10/2011 HouseCallAuto
      The diagnostic strategy here is to see what is missing when it is in the no start mode. Do you hear the fuel pump run when the key is turned to "on"? It should hum for two seconds and stop.
  • loneryder
    loneryder - 1999 Mercury Cougar - Preventive Maintenance - 6/7/2011
    I cant seem to get rid of the code P1151 Manufactures Control Fuel Air Metering,
    I have replaced all of the O2 sensors and the Mass air flow sensor, but that code still haunts me, could someone please help me?
    • Jimm
      6/7/2011 Jimm
      P1151 = Lack of HO2S-21 Switch, Sensor Indicates Lean. It means a Heated Exhaust Oxygen (HO2S) sensor indicating lean at the end of a test is trying to correct for an over-rich condition. The test fails when the fuel control system no longer detects switching for a calibrated amount of time.
      Causes: A code P1151 may mean that one or more of the following has happened:

      Short to VPWR in the harness or HO2S
      Water in the harness connector
      Open/shorted HO2S circuit
      Corrosion or poor mating terminals and wiring
      Damaged HO2S
      Damaged PCM

      Fuel System:
      Excessive fuel pressure
      Leaking/contaminated fuel injectors
      Leaking fuel pressure regulator
      Low fuel pressure or running out of fuel
      Vapor recovery system

      Induction System:
      Air leaks after the MAF
      Vacuum Leaks

      PCV system:
      Improperly seated engine oil dipstick

      EGR System:
      Leaking gasket
      Stuck EGR valve
      Leaking diaphragm or EVR

      Base Engine:
      Oil overfill
      Cam Timing
      Cylinder compression
      Exhaust leaks before or near the HO2S(s)

  • ron
    ron - 1992 Mercury Grand Marquis - Preventive Maintenance - 6/3/2011
    Driver seat motor - the current one works intermittently
    0 answer
  • melissa
    melissa - 2006 Mercury Mountaineer - Preventive Maintenance - 6/1/2011
    Which port do you add 134A refrig coolant 2
    • Jimm
      6/1/2011 Jimm
      Always add the refrigerant to the suction side of the compressor; this would be the low-pressure port. Usually the high-pressure and low-pressure ports are two (2) different sizes, so the connections cannot be mixed to accidently add the refrigerant to the high side (wrong port).
  • bobwebg
    bobwebg - 2004 Mercury Grand Marquis - Preventive Maintenance - 5/27/2011
    2004 Mercury Grand Marquis 4.6L Common problems?
    This is a low mileage stop and go driven vehicle with 28,000 miles on it and routine maintenance. No repairs to date. It's a great car that I want to keep till death do us part.
    • yboy82
      5/27/2011 yboy82
      Try to check out the 43 TSB's and 1 Recall for your vehicle to have an idea about your query. You can visit this link to check it out just click the title of the TSB or Recall to see its summary or content.
  • gamer-6
    gamer-6 - 2007 Mercury Montego - Preventive Maintenance - 5/26/2011
    How do i reset oill life warning
    • yboy82
      5/26/2011 yboy82
      Did you already change your engine oil?
    • yboy82
      5/26/2011 yboy82
      If with DIC you should turn your ignition key to on position. And then press the middle button on the right side of the steering wheel until "oil life xx% reset if new" is displayed. You should press the bottom button on the right side of the steering wheel. Press and hold bottom button until "oil life is reset to 100% is displayed. And then turn your ignition to off.
    • yboy82
      5/26/2011 yboy82
      If without DIC you should turn your ignition key to on position. And then press the button below the speedometer until "oil life xx%" is displayed. Press and hold the button until "oil life 100%" is displayed. Press the button until the odometer is displayed again.
      5/26/2011 gamer-6
      yboy82 thanks for the quick comeback.
  • mercury
    mercury - 2007 Mercury Mountaineer - Preventive Maintenance - 5/23/2011
    Is fuel pump inside gas tank .
  • Dr.Spears
    Dr.Spears - 2001 Mercury Sable - Preventive Maintenance - 5/20/2011
    My heater/ac unit will not shut off & radio dont work it occurred 2gether did a fuse blow? blo blow?if y which
    This happened during heavy rainstorm yesterday and is still continuing.As soon as car is started heat/ac turn on&radio not working.
    • HouseCallAuto
      5/20/2011 HouseCallAuto
      I need to know if you have electronic automatic temperature control or just regular manual heating and air conditioning. The electronic version has a digital display. You can set the temperature in numbers as opposed to rotating a hot / cold knob with the manual system.
  • Shaggy
    Shaggy - 2001 Mercury Mountaineer - Preventive Maintenance - 5/20/2011
    How do I determine which oil filter to use?
    I just bought this vehicle and went to the store to get the oil and filter to change them and it listed two possible filter numbers based on either a 22mm shaft or a 3/4 - 16 shaft and of course after crawling under it and looking I think I got the wrong one so How ...
    • Spoon Sports
      5/20/2011 Spoon Sports
      Get your old one, go back to the shop and match it with the new one. Besides, you just stated there are 2 part numbers, so guess what the correct part number is now :)

      Source: Thats what i do with my parts. I bring the old one to be sure.
      Spoon Sports
      5/21/2011 Shaggy
      thanks but the old one is still on the vehicle and not the brand I use
    • HouseCallAuto
      5/20/2011 HouseCallAuto
      If you can read a part # and brand on the old filter that is still attached, that I could cross reference and tell you which one you have.
      5/21/2011 Shaggy
      Thanks for your reply but I did this with the owners manual and the fram web site and got the answer I needed this morning.
  • karen
    karen - 2003 Mercury Grand Marquis - Preventive Maintenance - 5/20/2011
    My windshield wipers came on and wouldnt shut off until i pulled the fuse do i need a new motor or new fuse?
    this is the first time this happened and i was driving at the time the switch was in the off position.
    • DrkShdw983
      5/20/2011 DrkShdw983
      The motor and fuse are fine... you need a new switch
  • brandon
    brandon - 2006 Mercury Grand Marquis - Preventive Maintenance - 5/14/2011
    How often show I get a tune up on this vehicle?
  • criccet
    criccet - 1993 Mercury Cougar - Preventive Maintenance - 5/8/2011
    My car started idling very high and making a humming sound
    it happens when the car is hot or cold,when im driving or just started.the check engine light comes on and goes off
    • Bill
      5/8/2011 Bill
      Get codes checked and re post
  • Pat Pendley
    Pat Pendley - 2009 Mercury Milan - Preventive Maintenance - 5/8/2011
    My driver side door rear-view mirror was cracked today; can I replace just the mirror?
    The cover part seems okay, and I was able to clip the back of it onto the front; however, the motor inside my car does not move the mirror. Should I have the entire part replaced?
    • DrkShdw983
      5/8/2011 DrkShdw983
      As long as there's no damage to any other parts other than the mirror you can save yourself a lot of money just replacing the mirror itself. If anything else is damaged you'll spend a lot of time trying to disassemble the whole thing and replace all the broken parts. At that point I usually just pick up another whole assembly out of the junk yard and re-finish it
  • spencer6383
    spencer6383 - 2002 Mercury Cougar - Preventive Maintenance - 5/3/2011
    My car makes this sqealing sound between 1000 and 2000 rpms only. I changed the pcv valve and it's not that.
    I believe it has something to do with the air intake as my wifes explorer made a similar sound. a few years ago
    • Spoon Sports
      5/3/2011 Spoon Sports
      Without actually hearing it, I can't say whether it's the usual minor squeak or something worse. Normally, on start-up, almost all of the oil in in the pan, so you may hear a little metal-on-metal.

      Occasionally, my cars have made more than a little squeal though, and it's usually been either a belt or lubrication issue. Once was after my car leaked a quart of oil after sitting for a few days. Once was after blowing over a quart of gas into my oil pan, causing a few other problems too. And once was when I was a bit overdue for an oil change; old, broken-down oil doesn't lubricate.

      If you get fresh oil, enough of it, and new, properly tensioned belts and it still does that, then get it looked at. If nothing else, you'll be buying a little peace of mind.

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