Question about 2001 Mercury Grand Marquis

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What causes a p0430 code on a 2001 mercury grand marquis ?

Posted by Anonymous on

  • Keith Shearer
    Keith Shearer Jun 05, 2014

    a bad catalytic converter will cause this code.if you had any concerns with car running rough, and it was a misfire, this could have caused converter failure. you need to have it diagnosed by reputable repair shop. have them make sure no misfire, lean codes, fuel system concerns I would suspect converter

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 5 Answers

SOURCE: 1994 Mercury Grand Marquis Check Engine Light Code 332

its the tube going from the egr valve to your exhaust it have carbon build up and you either have to replace it or get a metal coat hanger and clean it out.

Posted on Sep 26, 2009

  • 21 Answers

SOURCE: how to flush and change the antifreeze on a 2001 mercury grand ma

loosen pressure cap slowly at coolant tank to relieve pressure,when pressure is relieved remove cap,place a suitable container under drain valve at bottom of radiator open drain valve.when coolant has stopped draining,close valve.then remove thermostat,[this is a good time to replace t.stat since it must be removed to refill cooling system],disconnect heater core coolant supply hose at rear of intake manifold.add coolant thru t.stat opening until coolant comes out of coolant supply hose fitting,reinstall hose and tighten[not to tight] reinstall thermostat o ring and thermostat.add coolant to tank until the coolant level is between the COOLANT FILL LEVEL marks.select the maximum heater temperature and blower speed settings run engine until it reaches operating temp.add coolant until the coolant level is between the COOLANT FILL LEVEL marks.turn off engine allow it to cool, recheck coolant level,add as needed .ford requires this procedure to avoid engine damage due to trapped air.

Posted on Jan 20, 2010

  • 58 Answers

SOURCE: where are the spark plugs located on a 2000 Mercury Grand Marquis

There are eight COPs (coil-on-plugs) to remove. Using a 7mm or 9/32" socket, remove each bolt securing each COP to the intake manifold on top of the engine. Remove all eight COPs, and the spark plugs are underneath. When replacing the spark plugs, use only the proper Ford/Motorcraft plugs, even if they cost twice as much as the aftermarket ones. You will avoid further headaches this way. Hope this helps.

Posted on Mar 30, 2010

greg_margo
  • 1959 Answers

SOURCE: I cant find the factory five digit code to reset

This number is usually inside the trunk jamb. It's printed on a sticker. If you've the owners manual, there's also usually a card with the number on it. If you know your original code and are trying to reset a newer code back to the original, disconnect the battery for 10min. Loss of power will revert key codes back to original factory setting.

Posted on May 02, 2010

shinehutt
  • 254 Answers

SOURCE: how do you replace headlight

you have to remove the whole lens usually two bolts onrad upper rad support remove grill and rmove lens unitturn on headlight mark which bulb to take out looking at other side light

Posted on Jan 14, 2011

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Whats does the code p1702 mean on a 2001 mercury grand Marquis


Possible causes
- Faulty Transmission Range (TR) sensor
- Transmission Range (TR) sensor harness is open or shorted
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Feb 18, 2015 | 2001 Mercury Grand Marquis

1 Answer

2001 mercury grand marquis idle is low after a dead battery


use a code reader to reset the CPU as battery changes sometimes corrupt the program

Dec 04, 2013 | 2001 Mercury Grand Marquis

1 Answer

2001 mercury grand marquis reading code p305 misfire, spark plugs and coils changed


If you changed the #5 Coil then the code was wrong

You get lots of wrong codes on a ford, as a bad coil
spikes the pcm when grounding out to fire the coils
secondary side

Try putting the old coil back & walking the new one to
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Jan 24, 2013 | 2001 Mercury Grand Marquis

1 Answer

Heater and airconditioner control on mercery grand marquis


If the fan will not run on ANY speed in your Grand Marquis, the problem is most likely NOT the control switch.

Check for power and ground at the blower motor connector. If power and ground is present, replace the blower motor. Otherwise, the problem is most likely a failed blower speed control module (VERY common). The blower motor speed controller is located in the A/C evaporator housing just below the heater hoses.

Note: It is also common for a bad blower motor to CAUSE the controller to go bad. You MAY have to replace BOTH.

May 17, 2012 | 2001 Mercury Grand Marquis

2 Answers

2001 mercury Grand Marquis won't start engine


my mercury grand marquise turns over but wont start what could it be. would a fuse keep it from starting?

Dec 03, 2010 | 2001 Mercury Grand Marquis

1 Answer

What is the firing order and which side is the #1 piston on?


2001 Mercury Grand Marquis 4.6 liter V-8 VIN "9"

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2001 Mercury Grand Marquis 4.6 liter V-8 VIN "W"

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Hope helped (remember rated this).

Feb 19, 2010 | 2000 Mercury Grand Marquis

1 Answer

Replaced battery in 2001 mercury grand marquis


check terminals, might be cracked or not tightened good

Mar 08, 2009 | 2003 Mercury Grand Marquis

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