20 Most Recent 1989 Mercury Grand Marquis - Page 6 Questions & Answers

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1989 mercury grand marquis

pull each fuse one at a time and check them , or use a multi tester to check them to find the bad one. if you are going to pull and visually inspect each one individually be sure to put them back in the same hole they came out of.
10/9/2008 3:05:05 PM • 1989 Mercury... • Answered on Oct 09, 2008
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Tranny trouble

Sounds like your idle controll sensor, it most commonly looks like a spark plug, it plugs in to the side of the transmission, near the belle housing. But for now try a quart of lucas oil in your transmission, if that causes it to shift, then your bands are stretched, and most likely need a transmission.
7/29/2008 6:33:01 AM • 1989 Mercury... • Answered on Jul 29, 2008
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How do i bypass the pats security system in my 03 grand marquis so that my key will start the car

Go to your fuse box and pull off fuse number 8, but be prepared to loose the clock memory or you need to power the clock memory wire from somewhere
11/1/2022 12:38:37 PM • Mercury Grand... • Answered on Nov 01, 2022
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Code 024 & 025 on 2003 mercury EATC

My 04 Marauder had the same issue...hot air no matter what. No noises and the airflow changes properly but I saw a video on Youtube about replacing the blend door actuator and toward the end it showed how to do a self test to get the codes. I did that and got a code of 025 which I think is the blend door actuator. In doing so, at least for now, the AC is working properly for both cold and hot. The AC system itself is fine and told to me by a local mechanic. Here's the video link: https://www.youtube.com/watch?v=_31kGBxyxy8
9/14/2022 6:52:29 AM • Mercury Grand... • Answered on Sep 14, 2022
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2002 Mercury Grand Marquis LS Beeps and the fuel tank register rises with each beep?

Question edited for clarity, make and model names (it is written all over the vehicle :>). Question moved to sub category. For strangeness like that, it is best to take the car to an auto-electrician with a pro grade scan tool. It is a known issue if you want to try and fix it yourself. Watch all the videos, but they deal with gauge problems, not the beeping. Partway down says it is caused by an evap hose leak. https://www.google.com/search?q=2002+Mercury+Grand+Marquis+LS+Beeps+fuel+gauge+rises+with+each+beep ..
5/5/2022 12:28:43 AM • Mercury Grand... • Answered on May 05, 2022
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Door lock relay location on 99 Mercury grand marquis gs

there is none. replace door lock actuator about $40.00
3/13/2022 9:03:53 PM • Mercury Grand... • Answered on Mar 13, 2022
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Door open warning on in conjunction with tire monitor fault

As they are two completely separate systems, I would think you have a door switch issue (located inside of the door latch) and a TMPS sensor issue. Your local tire shop should be able to help with the TPMS sensor. For the door switch, you can try cleaning the switch with some contact cleaner, but I have found that it usually requires replacement of the latch to solve the issue of the ajar light.
11/10/2021 9:50:53 PM • Mercury Grand... • Answered on Nov 10, 2021
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Are the driver side quarter panel-rear fender wheelhouse interchangeable on a '98 Mercury Grand Marquis and '01 Grand Marquis?

they re both 3rd generation so body lines match ----- and switching out a rear quarter entails welding and fabing the metal and if damage extends to the wheel well will need to do the same - then finish and blending paint
9/26/2021 5:42:55 PM • Mercury Grand... • Answered on Sep 26, 2021
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Diagram of vacuum hoses placement on 1988 mercury grand marquis LS 302 v-8 5.0 liter

There is a diagram under the hood with all the vacuum line routing it is either on the hood or the shock tower unless it has come off . It is a color coded diagram .
9/16/2019 6:57:00 AM • Mercury Grand... • Answered on Sep 16, 2019
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Where are the fuse for the electric windows for a 2007 Mercury Marquis?

There is no fuse for electric window, kindly talk more about what you are facing with your car windows. If some windows do not roll down or up this mean you have to inspect power window switch assembly.
9/3/2019 7:50:18 PM • Mercury Grand... • Answered on Sep 03, 2019
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04 grand Marquis it all ofa sudden it quiet running. turn key on. dash lites all come on then go off all but airbag an traction control stay on. try to start nothing no crank do it two times in a role doors lock an unlock what izz wrong

Clean your cables and terminals with alcohol and go to the power distribution box and do the same thing then try again to start it if still nothing look at the ground cable on the starter case going to the solenoid if it's frayed or broken you found it if not have the starter bench tested if good go back to power distribution box and check all fuses and relays
8/16/2019 5:21:06 PM • Mercury Grand... • Answered on Aug 16, 2019
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How do you remove a grill from a 1996 Grand Marquis and what tools do you need

Open the hood and take out the black plastic cover for the ac this is the very front cover that has the headlight covers on both sides and it goes across the entire front of the car there are clips that hold it in after you do this you ll see the screws to remove the grill from the radiator support and header panel
7/26/2019 4:11:25 AM • Mercury Grand... • Answered on Jul 26, 2019
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97 mercury grand marquis wont start after warming up

seems like tempature is the problem,i had same problem with my 96 f-150 in the cold it start and run fine, after its warmed up it wont want to fire at all, my tempature sensor was bad my truck thought it was always cold when it wasnt, so the engine was chokeing my throttle body,and flooding it, put your foot to the floor hard and crank that thing over and over, shell pop and come alive and it will smoke real good to but the chokes open back up after shes runnin...hope it helps
7/14/2019 6:07:42 PM • Mercury Grand... • Answered on Jul 14, 2019
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My 96 grand marquis is running rough. I checked the codes and have a random misfire . I recently replaced intake gaskets ,and it ran fine for a little while.Any idea where to start?

Could be your EGR, but misfire i would check either spark plugs and/or ingnition coils
5/18/2019 12:45:39 AM • Mercury Grand... • Answered on May 18, 2019
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94 grand marquise had delayed start with clicks,now wont start until i turn the key 90 times. plz help

Strong indication of a bad starter. The starter drive engages (clicks) but the starter is not spinning (brushes not grounding)
5/8/2019 10:55:32 PM • Mercury Grand... • Answered on May 08, 2019
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1985 Mercury Grand Marque Jerking When Driving On Level

A bad plug wire could cause this. Open the hood at night and look to see if any plug wires are shorting. Spray a mist of water on them. May need to put in on a scope to see a bad wire or test with an ohm meter.
5/8/2019 6:14:56 PM • Mercury Grand... • Answered on May 08, 2019
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How do you replace cigarret lighter coils,I have 2,on a 2010 merc grand marqui?

Not worth it, simply get a new lighter. They are generally compatible and aftermarket should be fine.
4/6/2019 12:42:26 AM • Mercury Grand... • Answered on Apr 06, 2019
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Location of fuses for the fuel pump of a 1998 Grand Marquis LS

Under the Hood in the Fuse Box, Check the Fuel Pump Relay as well!
3/24/2019 1:41:22 AM • Mercury Grand... • Answered on Mar 24, 2019
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