Question about 1998 Mercury Grand Marquis

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1998 mercury grand marquis shut down as i was electrical system shut down, fuses are gud connectors gud, wat part of my electrical system would shut my car down and cause it to turn over but not start

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I've been told to replace coils. That's what I'm doing this weekend. Hopefully that & a full tuneup will fix it.

Posted on Sep 02, 2015

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Crank sensor needs tested and replaced

Posted on Mar 12, 2011


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1998 grand Marquis blows out Fuse 13. This shuts off power to the instrument cluster and shutting the Headlights, only when the Variable Control iss in the "Auto" position. In the "On " position th

(1998 Gr. Marquis) I just found the culprit of my fuse #13 for the speedo, temp and votage gages. I had to remove the gear shifter cover which was not difficult also the metal brace across the bottom and the ignition key, but it was a tiny exposed burr in the overdrive shift button wire just at the end of the gear shift leaver. I elec. taped it up and now, no more blown fuse!

Feb 28, 2013 | 1998 Mercury Grand Marquis

1 Answer

Having problem with 1998 Mercury Grand Marquis LS Fuel Pump. Only getting 6.58 volts at the pump. Suggestions?

Sounds like a bad connection between the two points.
It may be easier to run a new wire than to tear the harness and connectors apart.

Sep 28, 2012 | 1997 Mercury Grand Marquis

1 Answer

1998 mercury grand marquis bogging out

Pressure in the cooling system from somewhere. May be blown head gasket if it is bogging out on you.

Sep 01, 2012 | 1998 Mercury Grand Marquis

1 Answer

Mercury Grand Marquis fuel pumb

Check your connectors wire pin corroded clean the connector wit solvent and check if you have power in the circuit if yess start your engin it should work great again good luck

Apr 15, 2017 | 2009 Mercury Grand Marquis

1 Answer

I have a 2003 mercury grand marquis and my blower motor does not work there is no voltage at blower motor plug checked fuse already and that is good and checked the relay they were both good

voltage comes from the actual a/c head,chek a wiring diagram to see which actual wire brings pwr down to ur blower . access by removing a/c head out to access backside connectors. another common problem overlooked is to to check ur blower resistors their located in the same area as ur blower motor. u have to access the two mounting bolts that hold it in. the pigtail/wires that connect to blwr mtr usually come from this resistor pak located in blwr hsg to help keep em cool.wat they do is vary the amount of ground going to blower mtr.wen u remove it a telltale sign that thir no good is severe rust buildup on the mounting plate or electrical module wrapped in sealant. good luk

Apr 02, 2011 | 2003 Mercury Grand Marquis

1 Answer

1995 Grand Marqui feels like it is choking when driving

if it is bucking while driving every so often , or stalls when you slow down almost to a stop , it may be the crank position wire has a poor connection . it may also cause a no-start problem. the connector wire is on the passenger side of the engine underneath right behind the crank pulley.pull the wire connector off and check for corrosion on tab or inside of plug.... try using die-electric grease in the connector plug . it may solve your problem .

Mar 19, 2011 | 1995 Mercury Grand Marquis

1 Answer

I want to replace coil pack on my 1998 mercury grand marquis. How do i begin

Removal & Installation To Remove:
  1. Remove the air cleaner outlet pipe if interfering.
  2. Disconnect the connector from the ignition coil. coilconn.gif

  3. Remove the bolt from the ignition coil. coilbolt.gif

  4. Remove the ignition coil on plug.
To Install:
  1. Install ignition coil on spark plug.
  2. Install ignition coil bolt. Tighten to 10 Nm (89 in. lbs.). coilbolt.gif

  3. Reconnect the ignition coil electrical connector. coilbolt.gif

  4. Install the air cleaner outlet pipe if removed earlier.
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Jul 06, 2010 | 1999 Mercury Grand Marquis

1 Answer

Cigarette lighter doesn't work in my 1998 Mercury Grand Marquis

sounds like the lighter itself is bad because the fuse for the lighter is the same as the fuse for the connecter in which the inspection machine plugs in to.

Oct 18, 2009 | 1998 Mercury Grand Marquis

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