Finish Selecting Your Vehicle to Shop For Your EGR Valve

Choose a Year for your Mercury Grand Marquis 's EGR Valve

  • 2002
  • 2001
  • 2000
  • 1999
  • 1998
  • 1997
  • 1996
  • 1995
  • 1994
  • 1993
  • 1992

Shop for Top Selling Genuine Mercury Grand Marquis EGR Valves

  • We Stock the following top leading brands, including Motorcraft
  • Constantly Updated Inventory of Mercury Grand Marquis Replacement EGR Valve Parts

We also have EGR Valve parts for other Mercury models, including Cougar, Grand Marquis, Mountaineer, Sable.

1995 Mercury Grand Marquis EGR Valve 8 Cyl 4.6L Motorcraft - EGR Valve

P311-3FB389B    CX1740  New

In Stock & Ready to Ship
Motorcraft EGR Valve
  • EGR Valve
Brand: Motorcraft
Additional Fitment Information:
Vehicle Block Engine
1995 - Mercury Grand Marquis V 8 Cyl 4.6L
2000 Mercury Grand Marquis EGR Valve 8 Cyl 4.6L Motorcraft - XL3E-9D475-B3A

P311-12C4B37    CX1720  New

In Stock & Ready to Ship
Motorcraft EGR Valve
  • XL3E-9D475-B3A
Brand: Motorcraft
Additional Fitment Information:
Vehicle Fuel Type Block Engine
2000 - Mercury Grand Marquis GAS V 8 Cyl 4.6L

Latest Car Advice

CarJunky AutoAdvice


Showing 3 out of 7 Posts | Show 4 Hidden Posts
Question From lennyd on MOTOR HAS HICKUPS

1986 dodge ramcharger. 318ci. 2 bbl carb. 4x4
motor has hickups once it warms up and reaches 35-40 mph
indications told me it was the EGR valve
when I unbolted it and inspected it I noticed a crack across both holes. after research and waiting 2 days for replacement EGR valve I installed it with the # 9 washer
I need to back up here one time and tell you that there wasn't anyone and still isn't anyone that can tell me the right EGR valve that will fit my truck.there were no OEM #'s on the old EGR valve.
getting back, I took a guess at the #9 washer for it by looking at the old one and kinda matching it.
I took my truck for a test drive after the install and just when I thought it was fixed it started hickuping again.
could I not have the right EGR valve and can you help me find the # EGR valve I need
do I need to chage the washer untill I get the right # washer in there for my truck....the new EGR valve came with about 10 washers with diff. numbers on them
or Could I fixed the cracked EGR valve and I have a problem somewhere else
Please help

Response From Tom Greenleaf

Just some thoughts on this vintage of Chystler engine: I had a lot of issues with these with sludge not allowing proper exhaust heat thru intake manifold. Not real hard but it was fixed with taking the whole thing out and cleaning it all up. That sludge was a surprise as it was happening to cared for engines?

EGR fix: If the crack is just a crack and not sealing anything right there, there are high temp JB-weld type products that will take full exhaust heat. Good stuff but of course not as strong as uncracked metal,


Response From lennyd

i bought a new EGR valve and installed it, but wasn't sure on putting the right number washer in it. i took a ,lets say educated guess going by the size of the old one..could it be the wrong number washer? jb weld is the BOMB...i used it on my boat and it works great.i keep it with me on the boat just in case. it's a miracle worker.
as far as the slug i will wait till i can put the truck down for a day and take your advice.
i was also told i might have blown the diapham in the carb. is that possible? thank you in advance for your knowlege and advice

Response From Tom Greenleaf Top Rated Answer

Diaphragm in carb could be tested with spraying carb cleaner at suspect leak and if idle reacts it probably is leaking there. What diaphragm? Choke pull-offs and a carb kit should still be available for replace these if needed,


Response From lennyd

do you think by changing the washer in the EGR valve to a bigger or smaller hole will make the difference here?

Response From Tom Greenleaf

I'm trying to recall this set up and the washer thing with this. The washers must be sized for different applications for this is the best I can guess. The whole EGR concept is the blend in some exhaust gas into the incoming mixture to REDUCE combustion temps which in turn lowers NOx output - this happens at part throttle, or supposed to happen only then and not at idle or wide-open-throttle. Ones that have been plugged or don't operate can make the engine "ping" at part throttle.

The different calibrations would have some impact on operations and alter emissions but probably wouldn't give you the Hick-ups that you have. No harm in trying though. Best to use some of the high temp gasket maker on the gasket there and or some high temp grease so you can re-use the gasket if you are going to test out the different sizes.

These engines were some of the best workhorses ever made and they hung on to that block as long as possible. They (Chrysler) always had some issues with carbs and I think that's where most of your problems are. With those and the gaskets, diaphragms on anything, carb cleaner spray finds the leaks,


Response From lennyd

tom, i can't thank you enogh for you knolege. i think your right i should lean more to the carb. will buy the rebuilding kit and try that.i really think i hit the gasket thing right on with the right size washer on the EGR valve. . your right on the workhorse of the 318 ci motor. this truck has some power. i just bought it about 4 weeks ago and the kid wanted $600.00 for it. i got it for $200.00 and haven't even put $100.00 into it. had ninor things wrong to pass inspection. little rust and it hasn't run in over 1 1/2 years. he put a new battery in it and he ran it till i bought it.was a old hunting truck and boy did the inside look like it. all cleaned up now and my wife even likes it. can pull my bass boat now without asking to use someone elses truck.
thanks again.....lenny

egr valve

Showing 4 out of 4 Posts
Question From roblee on egr valve

My '04 Ford F350 was running rough, had a friend hook a computer to it and it diagnosed the egr valve as being bad. I bought an egr valve, but I'm not sure where it is located under the hood and exactly how to remove and replace. HELP!!

Response From way2old

What was the EXACT code number of the code?? If it was a P0401, the valve will not cure it. More than likely it will be the DPFE sensor. Let us know.

Response From roblee

what is that sensor for and where is it located on the truck, also the truck is diesel.

Response From way2old Top Rated Answer

Still need the exact code number so we can research it for you. All I am doing now is guessing. This can get expensive by guessing on parts. Post back the codes and we can help you lots more.

Suzuki Esteem won't start after EGR Valve Replacement

Showing 4 out of 5 Posts | Show 1 Hidden Posts
Question From Guest on Suzuki Esteem won't start after EGR Valve Replacement

I have a 1999 Suzuki Esteem 1.6L 16 valve. 120,000 miles on it. I was getting the EGR Flow engine error code so I took off the EGR valve cleaned it up a bit and that fixed the problem for a couple of weeks. When the light came back on I replaced the EGR valve with a used one. Now the engine won't start at all with the old EGR valve or the new one. It turns over but won't start. If I spray some quick starter in the air intake it will fire and run for a few seconds but then die. I tried blocking the EGR valve altogether but there is no change. Any ideas?

Response From Loren Champlain Sr

An EGR valve won't keep an engine from starting. Granted, it may not run real good, but should run. Doesn't sound like you are getting fuel to the injectors. Look for disconnected or poorly connected connectors. Can't image how you'd blown a fuse or a relay doing the EGR, but worth a check.

Response From Guest Top Rated Answer

Thanks, I don't see any problems with any connectors or hoses - the fuel pump relay does not seem to be the problem. Is there a simple way to tell if the fuel pump is working?

Response From Loren Champlain Sr

Well, the best and safest way would be to connect a fuel pressure guage to the fuel rail. Listen for the fuel pump running when you first turn on the ignition. Being hard of hearing, I'll stick a funnel in the fuel tank opening, hold my ear close, and have someone turn on the key (or have someone with some hearing left to listen). It'll only run for a few seconds, then shut off.

Response From Guest

Update - problem was the fuel pump. I think it will spell the end of the line for this Esteem. Thanks for your help.

electric egr valve

Showing 3 out of 11 Posts | Show 8 Hidden Posts
Question From walshbrk on electric egr valve

pulled the egr valve off of my 4.3 vortec today to clean the carbon out of it when i pulled it off it was milky looking inside i,m guessing this could indicate a blown intake gasket .

Response From Hammer Time Top Rated Answer

Are you losing coolant?

Response From walshbrk

yes it is leaking coolant .

Response From Hammer Time

Leaking? You mean externally? Where?

Response From walshbrk

yes externally runs off the front of engine .

Response From Hammer Time

Fix that problem before you worry about the EGR vale. It may or may not be related.

Response From walshbrk

oh i,m not worried about the egr was thinking since it,s milky looking and i,m leaking coolant it,s the intake gasket .

Response From Hammer Time

If the other leak is caused by the intake gasket, then it's not going to matter so either fix that first or remove the intake gasket and look.

Response From walshbrk

leaking intake gasket was my problem workedon it about 8 hours yesterday ran it through two heat cycles this morning problems solved .

Response From Hammer Time

Glad to hear that.

Response From walshbrk

thanks Hammer .