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I have a 96 mercury Marquis it ran good til I used my air one day and it started acting like it was running out of gas but it had gas in it. Every since than it starts fine but is hell on gas and dies at every stop sign or light but will start right back up. I changed plugs and wires and 2 out of the 4 oxygen sensors and now someone said it could be the catalytic converters cause it has 2 but the machine at my local autozone is saying its the Idolator Control Valve. Tired of spending money and it's not fixing it please help!!!

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  • Cars & Trucks Master
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Have you had the vehicle scanned for trouble codes?? The vehicle's computer stores these codes which identify The part or component of the vehicle's operating system which is faulty. Yes, it could be a dirty or faulty Idle Control Valve. Take the vehicle to Auto Zone or Advance Auto, ask to have a scan done for trouble codes. Once you have these codes, they can be looked up on the web for their meaning. Just do a search " 96 mercury code.... ( and whatever the code number is). The idle control valve can be cleaned, so that is a good starting point.

Posted on May 16, 2014

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  • Cars & Trucks Master
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Replacing the idle air control valve could cure the problem.

Posted on May 16, 2014

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6ya6ya
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SOURCE: car won't start / volvo 240 dl fuel injection

you nood to check all power conition.s at the battery perhaps neg

Posted on Jun 18, 2008

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SOURCE: truck starts, dies. truck runs good some days,bad the next

I had the same problem with My 1990 F150 300 6cylinder 4x4.....I cahnged all the same things you did, finally I sprayed a can of Gumout through the throttle body and it worked and ran great. Now I add fuel injector cleaner to the gas and a regular clean with the gumout and the problem has'nt come back. Good Luck to you and hope it works!

Posted on Oct 06, 2008

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SOURCE: BMW 328 i 1997: Start up problems / Stuttering / Engine Light

change the pcv valve its under the intake manifold

Posted on Feb 18, 2009

BCally1
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SOURCE: Replace muffler, not the catalytic converter which started to rattle. Stop running, will crank but will not start. can it be the catalytic converter.

if the converter is rattlin then it needs to be replaced because the element inside is broken. if the jeep still does not run try removing the catalytic converter to see if the restriction is too much. should start if the converter is restricted. if it doesnt maybe its whatever caused the converter to go bad in the first place

Posted on May 28, 2009

wyotechgrad
  • 30 Answers

SOURCE: I have a 96 cavalier z24. when I start it up the

See if there is a code in the computer and work from there. Find someone with an OBD2 code reader. If I'm not mistaken an OBD2 code reader works on 1996 and newer models. Could be a bad coil and you don't notice it when you first start it until it idles down, to check for that, while the engine is running, pull each wire off the spark plug, Each time you do that you should hear the engine struggle. Then pick back up once you plug it back to the spark plug. If you pull one and nothing happens to the engine, that could be all or part of the problem. Hope this helps.

Posted on Nov 24, 2009

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2 Answers

I have a 96 Mercury Grand Marquis. The car lurches while driving feeling like it will conk out. Usually when going uphill on the highway and trying to accelerate or maintain speed. This does not happen all...


I have a 96 Grand Marquis with a similar problem. Also on the highway it would just conk out on me suddenly, almost felt like I was hitting the brakes, then it would pick up again. Eventually got to the point where it was stalling out on the highway and at red lights. One day it wouldn't start. Mechanic said the fuel filter was clogged solid. It has run well but every once in awhile still stalls out on me. From talking with other Grand Marquis owners and the mechanic the Mass Air Flow sensor may be to blame. He wanted to charge me $400 but I found the part online for about $85.

Mar 27, 2011 | 1996 Mercury Grand Marquis

1 Answer

I have a 98 Mercury Grand Marquis. Won't start


Check in the trunk and push the button on the Inertia switch. It should be on the drivers side of the trunk.

If this does not help, get a fuel filter and change it. If you can possibly get a fuel sample from the disconnected gas lines do it.

The new 10% gasohol will separate if it stands a few months. You may need to add fresh gas with a drying chemical like "Heet".

Apr 26, 2010 | 1983 Mercury Grand Marquis

1 Answer

I have a 96 Marquis no power and blowing vacuum lines.


U TIMING CHAINS HAVE JUMPED, I AM 100% SURE ON THIS

Mar 04, 2010 | 1996 Mercury Grand Marquis

1 Answer

Is there a relearn procedure for blend doors in a 97 mercury grand marquis. Removed battery and now ac blows hot only


probably has a bad belend air door motor, to run the systen completely through its self diagnosis process" if has electronic auto temp control"
press."off "and "floor" at the same time release... then hit the "auto" button
wait til gives you code...... it will then "SOMETIMES start WORK normal til moved again by you.....
if manual, change hot to cold, listen carefully for clicking ...if clicking rplave blend door motor and inspect the plenums door while motor out

Jan 20, 2010 | 1996 Mercury Grand Marquis

1 Answer

96 mercury loses power going up a steep grade


It may be a leaky injector. The injector is connected to the bank. 1 of 2 fuel rails.

Jul 01, 2009 | 1996 Mercury Grand Marquis

1 Answer

1996 MERCURY GRAND MARQUIS WITH OCCASIONAL SLUGGISHNESS ON ACCELERATION AND SEEMS LIKE IT MAY BE USING MORE GAS THAN USUAL. HAS BEEN WELL TAKEN CARE OF, REG. OIL CHANGES, NEW FUEL FILTER 2 YRS AGO-DR


I would use 10W40 in the 96 and 5W20 or 30 in the 2002.

For the 96 with sluggishness, you need to gently clean the MAF sensor wires with carb cleaner and a toothbrush. It is in the air intake tube. After cleaning, disconnect the battery for 1/2 hour, then reconnect so the computer can relearn the clean sensor. Drive for 10 miles, it will run rough until it relearns.


Section 03-14: Engine Controls, Electronic 1996 Town Car, Crown Victoria, Grand Marquis Workshop Manual
DESCRIPTION AND OPERATION Mass Air Flow (MAF) Sensor The mass air flow sensor (MAF sensor) (12B579):
  • is mounted on the corner of the engine air cleaner (ACL) (9600).
  • uses a hot wire sensing element to measure the amount of air entering the engine; air passing over the hot wire causes it to cool.
  • sends out an analog voltage signal to the PCM (12A650) to determine the intake air mass. The PCM will then calculate the required fuel injector pulse width to provide the desired air/fuel ratio.
The mass air flow sensor hot wire sensing element and housing are calibrated as a unit and must be serviced as a complete assembly.

Mass Air Flow (MAF) Sensor

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May 27, 2009 | 1996 Mercury Grand Marquis

1 Answer

'00 Mercury GM - oil all ran out, engine seized - runs poorly now


Your problem is that you ran the engine without oil. In doing so, you damaged most (if not all) the bearings in the engine. There is nothing you can do to make this engine better except to do a complete rebuild. Bad bearings will result in extra internal friction. Thus engine will run terrible, probably knock, have less power, and use more gas.

May 23, 2009 | 1993 Mercury Grand Marquis

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