Mercury body & interior repair questions and answers
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365 Questions
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How do you change a driver side turn signal lightWalter Williams - 1999 Mercury Grand Marquis - Body & Interior - 11/28/2011-
11/28/2011 Spoon SportsThere should be 2 nuts inside the fender area similar to the Crown Vic. If you take them out, you should be able to get the rear of the light removed.
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I can't get my heater to work.Judy - 2000 Mercury Sable - Body & Interior - 11/26/2011I changed thermostat, blend door and it has been flushed.As long as blower is off the air is hot. Once I turn blower on the air is cool. -
What is cause of lights that work sometimes then they don't?SupplyBill - 2005 Mercury Grand Marquis - Body & Interior - 11/22/2011If they don't come on I tap on LCM under dash of car and they come on and stay on till you turn them out.Then next time same thing tryed to turn on then they won't come on.
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11/19/2011 CVOInspect the headlight switch for any signs of defects or loose of wiring harness, replace it as needed.
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.
11/22/2011 SupplyBillThank you. Also I unpluged bottom two connectors to LCM,headlights can't be turn off with the switch.Would this possible be switch problem? -
11/22/2011 CVOVisit this link and see the FIG : Lighting Control Module, Page 01 (2005)
http://www.autozone.com/.../...rGuideContent.jsp
The main switch controlled the LCM.
11/22/2011 CVOCheck the connectors for any corroded or loose pins.
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11/22/2011 jdlYou get at it from the trunk. There is probably an insulator that you have to remove. When you get at the bulb connector, turn it ccw, to remove. This info should be in your owners manual. The info I looked at was for sedan.
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Gauge is at HOT and the heater is blowing cold air. No steam coming out of hood, light is not coming on. Any ideas?Darthi - 2002 Mercury Sable - Body & Interior - 11/19/2011
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11/19/2011 CVOCheck the engine coolant level. Low in coolant could contributed to the gauge is at HOT and it was unable to fill the heater core and the heater is blowing cold air.
11/19/2011 DarthiI think this is the problem. I was an hour from home and needed to drive the car. I popped the hood, and I think you are right. The coolant level was way down. I added a whole container of water and almost 2/3 container of anti-freeze. As soon as I drove four about 10 minutes...I tried the heat, and it worked! I took the car to Jiffy Lube one month ago. I would have assumed that htey topped the fluids off. Either they forgot, or I have a slow leak. Would you agree with that? Thanks!
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11/19/2011 Genecar also may have a head gasket problem if it is full of coolant and still blows no heat
11/19/2011 Darthigreat suggestion! I'm learning a lot about what could go wrong for next time! Now that we know what the problem is, is there anything you recommend I do to make sure it doesn't have another problem?
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11/19/2011 HouseCallAutoRemove a heater hose anywhere and confirm that you have strong flow from the hose and if the there is no flow replace the water pump. Broken impeller.
11/19/2011 DarthiI didn't do this...but I am keeping these notes for next time. Anything additonal you think I should do before I trust that there is no other underlying problem?
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11/19/2011 CVOObtain a free loan radiator pressure tester from the local auto parts stores such as Autozone, O'Reilly or PepBoys. Follow their instructions and pump it an adequate air pressure in lbs " ALLOWANCES" on the radiator cap. Observe the leaks and perform the repair.
Note: hope Jiffy Lube forgot.
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Front windshield washer does not work. Pump does not run.Mike - 1997 Mercury Villager - Body & Interior - 11/15/2011Pulled off wire plug at pump and no 12v there. Is there a relay involved? If not, must be wire or steering column switch. Is this multi-switch difficult to replace?
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11/15/2011 Spoon SportsIf you are absolutely sure there isn't 12v at the pump, then you need what's called a front wiper/washer amplifier assembly. Before you change that, you will need to check that your wiring is good from the amplifier to the pump. You will need an ohm meter. It will tell you if you have a perfect connection, or no connection, or a connection with resistance. The pump wires are the same colors coming out of the amplifier and the pump, and the amp is at the left front strut tower.
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HORNS STOPPED WORKING?yikk54 - 1990 Mercury Grand Marquis - Body & Interior - 11/15/2011Ran wires directly to my battery & the horns work great. How can I find the source, in the wires, (may be a relay, fusible link, etc.) causing the problem. Where & how do I troubleshoot this? I have a Chilton's Manual, but it doesn't have a section on HORNS or ...
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11/15/2011 jdlClick on the link, check the fuse, check for voltage at the fuse, use voltage tester. Next, I have to check voltage and ground at the horn relay. The problem is usually the wiring in the steering column,but, start with the basics.
http://postimage.org/image/hfyrfiw5d/
11/15/2011 yikk54Thanks JDL Where did you get the diagram? Are there more on this? I also had someone push the horn, while I was under the hood. A sort of clicking sound came from (seem to me) above the heater core, BUT INTERNAL. Meaning INSIDE the car. That's why I asked about RELAYS, ETC. or ANY OTHER "in betweens". I believe that could be where the problem lies. Any other diagrams or schematics on the horn system, as (Some Models) have 1 horn on each fender side. THIS, seems to be throwing me off!!!
11/15/2011 yikk54Sorry, but, I can't seem to find ANY fuses marked at the fuse bax, for HORN. LOL. So, if you can, please check out my last post/reply. I would like to have or get more diagrams to track the wiring in this nightmare car, that a kid DRASTICALLY ALTERED! Anyhow, thanks again for your help & any dditional schematics or diagrams on this 1990 Horn. Just cannot go with the "HORN BUTTONS"!!! LOL. -
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11/15/2011 jdlThat diagram came from a library automotive database. A lot of libraries carry automotive databases. If you live in an area they serve, I believe the info is free. At least one of their databases, you should be able to access on your home computer. Not the best automotive database, but, better than nothing. I don't have a large library near me, I buy access for 40 dollars a year.
Autozone.com has free wiring diagrams. You have to register your vehicle, but, it's all free. I'm not sure I can find a fuse box for your model year, I'll try?
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11/15/2011 jdlWith horn button activated, did you check for voltage at the horn connector, use voltage tester. If you hear clicking, the fuse should be ok. The clicking may come from the horn relay, don't have location, at the moment. If you pull the relay and use jumper wire between terminals, switch side of relay, line with arrowhead is switch side, the horn should honk. There is usually a diagram on the relay.
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Window stopped going up mid-wayguppygaw - 1999 Mercury Cougar - Body & Interior - 11/13/2011I have power windows and as I was winding up the window, it stopped mid-way and won't go up any further. What's wrong?
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11/13/2011 jdlWill it go down? Is it the driver door window? I haven't looked at your wiring, but, where applicable, does the power window circuit breaker get warm to the touch? Might be something wrong with window motor?
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My car is a soft top. and i have water leaking into thr trunck l have water leaking into the rear.dawn - 2005 Mercury Grand Marquis - Body & Interior - 11/12/2011
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Is there a trailer hitch available that I can install on a 2000 Mercury Cougar? Where would I install it?Jeff - 2000 Mercury Cougar - Body & Interior - 11/6/2011
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How do I change the visor on a 1996 mercury grand MarquisBamBamMonkeyBolt - 1996 Mercury Grand Marquis - Body & Interior - 11/5/2011I need to know how to disconnect the visor light -
How can i get a guide to the fuse panel?adnylaj - 2001 Mercury Grand Marquis - Body & Interior - 10/29/2011
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9/2/2010 darkmindYou can refer to your vehicle’s owner’s manual.
10/29/2011 joannedanielunder hood is no fuse -
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10/26/2011 BillPlugs in and looks like a small square box or round located under dash left side in most cases, If you have a owners manual it will show you where it is most likely.
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Why does my speedometer work intermittently?Sue - 1995 Mercury Mystique - Body & Interior - 10/25/2011135K, I haven't tried fixing the problem yet. No warning lights are on. Problem happens while I'm driving the car. The speedometer may stay on zero then start going up then going back down again.-
10/25/2011 yboy82You should check out more about the TSB below
1995 Mercury Mystique Power Train Service Bulletin 228525
NHTSA: Action Number: 39220 Service Bulletin Number: 228525
Report Date:
Feb 01, 1995Component:
Power Train
Summary: Speedometer inoperative. *tw
10/25/2011 yboy82It is possible that the cable/connection in your speedometer is loose.
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Why does my speedometer work intermittentlySue - 1995 Mercury Mystique - Body & Interior - 10/25/2011135K. While driving the car the speedometer may remain on zero for a while and then climb up in number and then go back down. What is the problem? I have not tried fixing it yet.
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10/25/2011 yboy82You should check out more about the TSB below
1995 Mercury Mystique Power Train Service Bulletin 228525
NHTSA: Action Number: 39220 Service Bulletin Number: 228525
Report Date:
Feb 01, 1995Component:
Power Train
Summary: Speedometer inoperative. *tw
10/25/2011 yboy82It is possible that the cable/connection in your speedometer is loose.
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