Question about 1999 Ford Expedition

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Where is the egr valve on a 99 Ford expedition

Where is the egr valve located on 99 Ford Expedition 4.6l engine/ would this cause the engine to run rough

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The EGR valve is in a very difficult spot to work on. If the EGR is bad it will set off the check engine light and make the vehicle run rough or stall at idle. It really doesn't make it run rough while driving or accelerating. What are the conditions when the car runs rough?

Posted on Mar 01, 2014

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The EGR valve is the round disk looking piece with a vacuum line coming out of the top. It is located to the right of the carburetor. It is approximately 3 inches wide. If you are experiencing a trouble code P0401, you have insufficient flow through the valve. In expeditions, It is usually a blockage at the intake. I am including a link to a video that I think will help you out. How to Fix Ford F150 with P0401 EGR Insufficient Flow Code Part 1

Posted on Dec 31, 2015

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Posted on Jan 02, 2017

Anonymous

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SOURCE: location of air conditioner low pressure valve

The low pressure valve on the 01 expedition is located on the accumulator on the passenger side fire wall. The accumulator is underneath the battery relay and a grouping of wires. Had to squeeze hand underneath a heater hose and an a/c line to remove cap and hook up hose. Nothing has to be removed to locate the valve just a little touchy feely. Valve faces a 45 forward toward the engine.

Posted on Aug 11, 2009

moparownr

Jeff Hammack

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SOURCE: 1999 FORD EXPEDITION 2WD 4.6L EGR VALVE,EGR

Remove the throttle body housing on the top of the intake, it is a 90 degree tunnel like small piece held by 4 small bolts, turn it over and look for two holes, these holes are for the EGR valve flow, they are probably plugged up with carboned crud, clean them out with the tip of a screwdriver if neccessary to remove all the crud, once its clean reinstall it and reset your check engine light, hope this helps, let me know

Posted on Dec 04, 2009

ZJLimited

ZJ Limited

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SOURCE: 97 Ford expedition blinking check engine light,

A flashing CEL means that you might be causing damage to your CATs. It will flash when the PCM senses a misfire bad enough to cause fuel to dump into the exhaust. When that happens lay off the throttle. Chances are you've got a bad injector or bad plug.

Use a code reader to know the real reason that check engine light come on.

Posted on Apr 30, 2011

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Related Questions:

1 Answer

Where is the egr valve located on a 99 Ford Expedition 4.6


Its on the drivers side firewall as it comes off exhaust manifold.

Mar 01, 2014 | 1999 Ford Expedition

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Rough idle problem


could be a vacuum leak at a hose or gasket. with the engine running spray a little carb spray at the intake manifold area. if the idle picks up you are close to the vacuum leak. dont spray on the exhaust manifold area, be careful

Oct 24, 2013 | Cars & Trucks

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Idle is rough


Spark Plugs have to be changed every 3 years
Front Oxygen Sensors changed every 100,000 miles
Can't have any Vacuum Leaks -- anywhere on the vehicle
Need to have it road tested with a Professional Scan Tool
& look at all data & get caught up on Preventative Maintenance
Very few people change motor oil 3 or 4 times a year, if at all,
and the Variable Cam Actuators fail, as a result,that & few other
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It's well known that Ford COP Ignition Coils fail sometime in
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Jun 21, 2013 | 2003 Ford Explorer

1 Answer

I have a tropubleshooting code of P1405. On a ford Expedition 5.4l. Where do i fine the DPFE sensor (DPFE sensor upstream hose off or plugged.. aaECM detected EGR flow in a negative direction with aan


DPFE sensor failures are VERY COMMON on Ford vehicles. However, clogged EGR ports are also very common on 5.4L Ford engines. The DPFE sensor is located on the left side of the engine. It connects to two silicone rubber hoses that connect to the steel EGR tube coming from the back of the engine to the EGR valve. (See picture of the sensor below)

Another common failure is a DPFE sensor that has melted due to excessive exhaust back-pressure. If you find the DPFE sensor melted, suspect a restricted exhaust. (smashed tailpipe, clogged catalytic converter, etc..)


12_29_2011_3_03_10_am.jpg

Dec 29, 2011 | 2002 Ford Expedition

1 Answer

My 1998 expedition with the 5.4 triton runs rough at idle but clears up when driveing down road I know I have a manifold leak and the previous owner said it was a coil pack, however after I had advanced...


If you have a manifold leak that will cause a MASSIVE vacuum leak and make it run rough at idle only. Look at your short term fuel trims with a scanner, if they are way negative you have a vacuum leak. Fix the intake manifold leak and that will fix your problem.

Oct 06, 2011 | 1998 Ford Expedition

1 Answer

Recently had all plugs and EGR Valve changed.


firewall

4 - 8

3 - 7

2 - 6

1 - 5

front

The spark plug firing order is 1 - 3 - 7 - 2 - 6 - 5 - 4 - 8 Make sure the coil is good.

Jul 21, 2010 | 2000 Ford Expedition

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1997 ford escort where is the egr located


For 1997 Ford Escort 2.0L MFI SOHC SPI 4cyl the EGR Valve is located under hood, center, upper engine area, mounted on top rear of engine block.

Hope helps (remember rated this).

Jul 08, 2010 | 1997 Ford Escort

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Rough idle


fuel filters rarley cause idle problems. i would look at the egr valve or possible vaccume leaks.

Aug 24, 2008 | 1999 Buick LeSabre

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