Question about 1988 Mercury Grand Marquis

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Where is the egr valve located on a 1988 mercury grand marquis 5.0l efi

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Posted on Jan 02, 2017

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SOURCE: Cant locate egr valve on a 2002 grand marquis

It's behind the back of the intake manifold in the center back, very hardto get too and even harder to see. The pressure switch is on the firewall behind the back of the engine follow the hoses ( plastic lines ) one hooks to the valve

Posted on Aug 11, 2009

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SOURCE: EGR valve pressure sensor on '02 grand marquis

well if it is the 3.8 it is on the side of the plentum its alittle black box with two hoses and a wire conector if v-8 will be on the back of motor and will be a little silver box with the 2 hoses and wire connector and the sensor is called D.P.F.E. sensor at ford

Posted on Aug 15, 2009

  • 1986 Answers

SOURCE: how to remove the egr valve on a 1993 mercury

Jack up the passengers side of the car, get a 1 1/16" wrench break loose the fitting to the manifold, hold a 24 mm wrench on the fitting to the manifold, loosen the flare nut on the tube. Then using a 10 mm socket, about 2 inches long, loosen the two nuts under the EGR valve, then take the both out, remove the vacuum hose to the top of the EGR valve, and the sensing line from the small tube. then completely remove the flare nut from the orifice fitting on the manifold. BE CAREFUL with the tube, do not bend it or break it, you may find PB blaster useful the night before on a cold engine loosen these fittings. Once the EGR valve is out, remove the orifice out of the manifold, remove the tube from the EGR valve, again be careful, mark the tube to EGR position before pulling this off, because the top fitting to EGR needs tightened before you put it back in, it will make the lower fitting difficult if you do not line it up right, dry fitting from under the car is helpful, mark it, and then tighten the top. Clean out the tube, be careful not to bend the little tube, either inside or outside the larger tube, it sticks out inside. Clean the orifice, clean the manifold face carefully not to score it, check for blockage there too. Apply anti-seize to the orifice, put it back in the manifold, then apply anti-seize to the bolts for the EGR valve, and the flare nuts both ends. Apply some silicon to the EGR valve face, just enough to hold the gasket in place, put the new gasket on, start the bolts two turns in the gasket, it will hold them in place, then start them in the manifold, then start the lower flare fitting to orifice, tighten the top bolts, and then the flare nut, connect the vacuum line, connect the sensing line. I just recently did this process, it works, if have other EGR issues, the valve is the easiest.

Posted on Oct 13, 2009

  • 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

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2 Answers

How can I clean EGR valve?


W a wire. Make sure its opening. Carbon acummulates

Apr 20, 2016 | 1988 Mercury Grand Marquis

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What is the easiest way to remove the egr valve on a 1995 mercury marquis in order to replace with a new one?


lol go to have the oil changed an ask them to look at it .
then tell them you have one by chance when they show it to you.

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EGR valve replacement


REMOVE HOSE,REMOVE TWO BOLTS,REMOVE EGR VALVE.HERE'S A LINK. http://www.autozone.com/autozone/parts/Duralast-EGR-Valve/1993-Mercury-Grand-Marquis/_/N-izx7xZ93xpy?itemIdentifier=135996_0_0_

Nov 11, 2012 | 1993 Mercury Grand Marquis

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How do you locate the egr pressure sensor in 2003 mercury grand marquis?


First you need to know what to look for. Here's a link to a auto part web site: http://www.autopartswarehouse.com/details/QQMercuryQQGrand_MarquisQQMotorcraftQQEGR_ValveQQ20032011QQMICX2060.html

The EGR valve takes exhaust gases and inserts them into the intake. Generally the EGR is near the center of the engine toward the back. It should be connected to the intake manifold and a pipe that comes from the exhaust manifold. It's not terribly difficult to change.

Jun 15, 2012 | 2003 Mercury Grand Marquis

1 Answer

Where is the egr valve located at on 1995 mercury grand marquis


Wish I had a picture for but will do my best to explain. it is located in the center, upper engine area, mounted in the rear of the intake manifold. I hope this helps you and good luck.

Apr 16, 2011 | 1995 Mercury Grand Marquis

1 Answer

I have a 1994 mercury grand marquis. it has several codes that come up when i pull them from the check engine light. what are these code meanings, and what needs to be done to fix them. any help would be...


I'm giving you these codes from a haynes manual,
326 EGR circuit voltage lower than expected

327 EGR valve pressure transducer/position sensor circuit below minimum voltage

332 EGR valve opening not detected

337 EGR valve pressure transducer/position sensor circuit above maximun voltage

Nov 28, 2010 | 1994 Mercury Grand Marquis

1 Answer

Cant locate egr valve on a 2002 grand marquis


It's behind the back of the intake manifold in the center back, very hardto get too and even harder to see. The pressure switch is on the firewall behind the back of the engine follow the hoses ( plastic lines ) one hooks to the valve

Aug 11, 2009 | 2002 Mercury Grand Marquis

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