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5 4 triton misfire

I Have a 2003 ford f150 5.4l 4x4 sounds like its misfire & lostpower what can it be? can it be the EGR valve?

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  • Cars & Trucks Master
  • 44,452 Answers

Have the fault codes read first and fix the coded faults before you spend unnecessary money.

Posted on May 01, 2013

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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im4um2
  • 77 Answers

SOURCE: egr valve

Here is a picture of the egr valve for your blazer. http://www2.partstrain.com/store/?Ntt=EGR%20Valve&N=9968%201588%204294967265
Quite pricey. As for changing it out I would head to your local library and seek out their online car repair sources. Be sure to take a jump drive or a floppy disk to take the documents back home with you. From your home print out the proper techniques as well as torque specs for the removal and replacement of the egr valve. Good luck.

Posted on Jun 27, 2008

STEVIE_N_24
  • 147 Answers

SOURCE: How do you clean the EGR valve on a 99' Honda Civic?

Pull vacuum on egr valve with engine idling and see if engine stumbles and tries to die until vacuum is released. If this DOES NOT happen the egr exhaust passage is plugged will need to remove egr valve assembly and remove carbon from passage into cylinder head.

Posted on Mar 29, 2009

moparownr
  • 667 Answers

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

  • 1 Answer

SOURCE: EGR VALVE ON 96 FORD PROBE SE

If it's a 2.0L, 5 speed (1994-7) there are two DPFE solenoids (both w/ 3 vacuum ports) near the oil filter, which control the EGR valve. They are discontinued and impossible to find except on junked cars. (FORD #'s K5T44093-4)
I have to junk my 1996 Probe if I don't find them - Missouri emissions.

Posted on Mar 03, 2010

duane_wong
  • 6826 Answers

SOURCE: Just replaced EGR hose &

OK, if you replaced the EGR hose, did you go all the way to change the EGR Valve? A stuck open EGR Valve can cause a rough idle and almost make it cut off.
Also, a vacuum leak on the EGR valve can cause a rough idle.

prev.gif next.gif Exhaust Gas Recirculation (EGR) Valve Removal & Installation 2.0L Zetec Engine NOTE: When the EGR tube is disconnected from the EGR valve, it must be discarded and a new EGR tube must be installed. The aluminum threads on the EGR valve must be inspected, and a new EGR valve installed if the threads are damaged.
To Remove:

  1. Disconnect the negative battery cable.
  2. Remove and discard the exhaust manifold-to-EGR tube. Use the following as a guide:
  3. Raise and safely support the vehicle
  4. Remove the splash shield
  5. Disconnect the EGR tube fitting
  6. Lower the vehicle
  7. Remove the air cleaner outlet pipe
  8. Disconnect the EGR tube from the EGR valve.
  9. Detach the vacuum line and remove the two retainer bolts.
NOTE: The EGR valve sealing surfaces are soft metals and easily damaged.
To Install:
  1. Installation is a reverse of the removal process. Carefully clean all sealing surfaces and install a new EGR valve gasket.
  2. Install a new EGR valve tube.
Detach the vacuum line (#1) and unbolt the EGR valve - 2.0L 02-04_escape_emissions_022.gif

3.0L (4v) Engine To Remove:
  1. Disconnect the vacuum line.
  2. Disconnect the EGR tube.
  3. Remove the EGR valve and discard the gasket.
NOTE: The EGR valve sealing surfaces are soft metals and easily damaged.
To Install:
  1. Installation is a reverse of the removal process. Carefully clean all sealing surfaces and install a new EGR valve gasket.
Detach the vacuum line (#1), unthread the EGR tube (#2) and remove the EGR valve bolts (#3) - 3.0L (4V) 02-04_escape_emissions_023.gif

Posted on Aug 02, 2010

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1 Answer

5.4 Ford Stumbling Acceleration


You can have very bad COP Ignition Coils without a Mil
Lamp on dash

You can also run Mode #06 on professional scan tool software,
to look at cylinder misfire counts,but need to have someone
drive it, while you look at data.

The EGR Valve or other egr items, could cause the uphill
thing, as your in a high vacuum mode & the coils will break
down as well

I wouldn't throw around the word diagnostic, as your only
looking for stored data, Generic or MFG --with a code reader
or professional scanner,that is no big deal or any computer
involved

O2 Sensors get replaced every 100,000 miles or so,&
yours may have never been done

You obviously need to start will new spark plugs,OEM
config,not some fancy thing with prongs,they won't work
in most fords.

Make sure there is no vacuum leaks anywhere including
exhaust leaks before the converter.

Check PCV Systems is tight & works

Check TPS Voltages

Test,don't replace anything,ever,have to fail a test to
need new parts,except plugs,O2,gas & air filter.

Oct 26, 2012 | 1999 Ford F150 Regular Cab

1 Answer

I have a 2003 ford escape. It runs rough when i start it or when im idling and on inclines. When i had the check engine light read (again) it said random misfire, misfire in the first 1000 rpm and misfire...


Remove the intake manifold, if necessary & change
the other 3 plugs & coils,assuming a V6, if not then the
codes were wrong & you did the wrong coils

No code tells you what to replace,only component testing does


Most likely been in there for 10 years

Replace the front O2 Sensors--their only good to 100,000 miles
Leave the rear monitors in converter outlet

Don't waste your money on putting something in the fuel tank
That is never a repair & is diluted 12 or 16 oz to 15 gallons
of fuel That alone tells you it is useless

Probably pay the replace the EGR Valve if not done already

They don't last a few years on a ford

Sep 16, 2012 | Cars & Trucks

1 Answer

My 2000 Ford Expedition 4.6l had a manifold seal blown and was leaking fluid in the sparkplug sockets. Seal replaced and spark plugs changed, now I am having to change coil packs because Im getting...


Faulty EGR valves do not cause "false" misfire codes. An EGR valve that is not closing properly can cause misfires (and misfire codes) but they are REAL misfires when this happens.

To understand this, you need to understand what a misfire is and what kinds of things can cause them. It is a very LONG list and I do not have the time or space to get into all that here.

You will also need to understand this if you are going to properly diagnose your misfire codes without wasting a whole bunch of money on parts that you do not need. MANY things can cause misfires other than spark plugs and ignition coils.

I do not know what EGR code you are getting, but I will tell you that in the 37 years that I have been diagnosing and repairing cars, there has only been once that I can remember that I have ever replaced an EGR valve on a Ford engine because the valve itself was faulty. Most EGR codes on Fords are caused by either clogged-up EGR ports or a bad DPFE sensor. Every so often you will find a bad EGR control solenoid or a broken vacuum line, but it is extremely rare that the EGR valve itself the cause. With the exception of leaking vacuum lines and on certain engines, clogged EGR ports (Like the 6 individual EGR ports in the 4.2L engine), none of these causes for EGR codes will cause any misfires.

Also, most of the time when people pull the trigger on the ignition coils on the 5.4L and 4.6L engines, all the thing really needs is new spark plug boots. They get contaminated with oil and water and can cause carbon-tracking on the spark plugs and/or arcing into the spark plug wells instead of sending the spark through the spark plug. It is pretty much the same thing as having bad spark plug wires on a conventional ignition system. You don't throw the coil and distributor away on a conventional system because it needs new wires. Neither should you replace a coil on a COP ignition system that just needs a boot. Some auto makers do not make the boots available seperate from the coil. Ford at least had the insight to understand that people cannot afford the cost of replacing all of their coils just because the boots are defective.

Mar 24, 2012 | 2000 Ford Expedition

1 Answer

2006 f350 6.0 powerstroke diesel missing. help


there is no wastegate on a 6.0l turbo. its a variable geometry turbocharger and doesn't need it. i have never seen a turbocharger cause a misfire, the turbocharger is most likely not your problem. if you didn't clean the intake out when replacing the egr valve there is a really good chance that the egr is bad again. also, a bad egr cooler can cause repeat egr failure. also, fuel injector control module is a common cause for misfire

Feb 18, 2012 | 2003 Ford F350 Super Duty DRW SuperCab

1 Answer

Enigine light is on, I have replaced the spark plugs, wires, Coil pac, and IAC valve and the light is still on. What can be the problem? Its a 2003 Ford Explorer XLT and the codes that I have are p0316,...


try replacing the DPFE, go to the ford dealer and take them your VIN and ask them for a DPFE, your egr valve is sticking open due to the failure of the DPFE and causing multiple misfires in your engine

Oct 04, 2011 | 2003 Ford Explorer

1 Answer

2006 Ford F150, 4x4, Triton V8, 5.4L-loses power going uphill between 50-60mph. Check engine light code of P0430. This indicates exhaust system. Where to start?


code P0420 & P0430 usually indicates a problem with catalitic coverter restriced/clogged
a muffler shop can run a test to check this .a misfire in engine can also be a culprit of coverter
going bad because of unburned fuel going through exhaust system

good luck

Jun 19, 2011 | Ford F-150 Cars & Trucks

2 Answers

Windstar 2003 engine jerking and spluttering only when driving.Now check engine light has come on


Check lights have been on all vehicle for 30 years,
so you should know what to do

Check for codes
A PO301 thru PO306 would be an ignition
coil misfire

The jerking could be ignition or the EGR Valve or both,
along with other possible issues

Have to start somewhere & diagnose parts of one
system at a time.

Unplug vacuum hoses at egr valve,plug them and test drive.

Give us the codes you got.

May 23, 2011 | 2003 Ford Windstar

2 Answers

I have a miss in my f 250 2003 5.4 triton and abs light comes on for 1 or 2 seconds when at 1500 rpms up hill or having load


ABS-could be a Wheel Speed Sensor

Mis under load (hi vacuum) ---Bad EGR Valve

Mis after egr repair ---COP Igition Coil

Oct 05, 2010 | 2003 Ford F250 Super Duty Crew Cab

1 Answer

It sputters and hesitates sometimes when on low speed


There are a few things you can look at here:
  1. The EGR Valve or Idle Air Control Valve
  2. Check for misfires in your cylinders, possibly bad coil
  3. Check your fuel pump and fuel filter
Those are the most common issues with fords spitting and sputtering

May 05, 2010 | 2003 Ford Expedition

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