Mercury Grand Marquis:

starting problems

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#1 10/13/2010 1:07 PM

wmason
New member
Registered: 10/13/2010
Posts: 1

starting problems

I'm trying to help a friend with a 2000 Grand Marquis.  The car sputtered and quit running.  He ran a hot wire from the battery to the fuel pump.  The fuel pump would run, but would not run with the key switch.  He found out there was a fuel cut off switch in the trunk that was tripped and reset it.  The fuel pump runs with the key switch, but the car will not start.  When you try to start it, the voltage drops from 12.8 to 8.  He has replaced the battery, starter and ignition switch.  He says he can turn the engine with a breaker bar.  I was wondering if the cylinders could be filled with fuel due to the fuel pump pumping but the car not starting?  If possible, could that putting stress on the starter enough not to turn over?

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#2 10/13/2010 3:13 PM

TechHelp2
Administrator
Registered: 11/23/2009
Posts: 1020

Re: starting problems

This is unlikely. If you want to check this you can take the spark plugs out and try to crank the engine.

If the same condition occurs then follow the Service Bulletin I found on a No Crank Condition on the Alldata website.

The next step would be to check to see if there is any spark to the spark plugs. No spark, No start.

If the plugs are fouled with gas either clean the plugs or replace them.   

If you are describing a no crank condition then follow the Service Bulletin below.

TSB 06-19-14
10/02/06
NO CRANK / STARTER TERMINAL FATIGUE
FORD:
1997-2007 Crown Victoria
1997-2004 F-150 Heritage
1997-2006 Expedition
1998-2006 E-Series
1999-2006 F-Super Duty
2002-2007 Explorer
2004-2006 F-150
2007 Explorer Sport Trac
LINCOLN:
1998-2006 Navigator
2003-2005 Aviator
MERCURY:
1997-2007 Grand Marquis
2002-2007 Mountaineer

ISSUE:

Some vehicles may exhibit a no crank condition due to an open circuit in the starter relay to starter motor circuit at the starter motor connection.

ACTION:

Follow the Service Procedure steps to correct the condition.

SERVICE PROCEDURE:

A new starter terminal wiring pigtail kit is released eliminating the need to replace the entire harness for the terminal connection.

The pigtail part number is 6U2Z-14S411-NA.


NOTE TERMINAL KIT ONLY SERVICES THE STARTER RELAY TO STARTER MOTOR CIRCUIT. THE KIT DOES NOT SERVICE STARTER MOTOR BATTERY POWER CIRCUIT.

Refer to instruction sheet contained in Wiring Pigtail Kit for wiring harness service procedure.

NOTE REFERENCE THE APPROPRIATE WORKSHOP MANUAL SERVICE SECTION 303-06 FOR REMOVAL AND INSTALLATION OF THE STARTER MOTOR WIRING TERMINAL CONNECTION PROCEDURES.

Let us know how you make out.


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#3 9/17/2011 11:02 AM

boobaby
New member
Registered: 9/15/2011
Posts: 1

Re: starting problems

i have a 1998 grand marquis after being driven awhile will not start back up and then sometimes it does. check engine light is not throwing any colds what could it be

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#4 9/17/2011 7:03 PM

TechHelp2
Administrator
Registered: 11/23/2009
Posts: 1020

Re: starting problems

Many things can cause this type of problem.

Using a scanner to check for codes is the first step, just because there is not any light on doesn't mean there is not one stored in the memory.

When the engine doesn't start check the spark, it may also contribute to the problem. If there is no spark; then diagnose this problem first, repair as necessary. If spark is good then go to the fuel system.

If the fuel pressure is with in range then there is a test that can be done called a fuel pressure leak down test.

You pressurize the fuel system and keep an eye on the fuel pressure, if it leaks down after a certain amount of time then the problem could be a fuel injector(s).This is when the injectors don't close all the way and leak into the cylinder causing a flooding condition. This is called a hot soak condition.

You may have to change one or more fuel injectors if the tests confirm this condition.

Get back to us with your results and if it is still not fixed we can look into the problem further.


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