Question about 2004 Ford F150

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Just changed timing chains, cam phasers, heads, plugs, cam phaser solenoids have a low idle and missfire at low rpm

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  • Anonymous Mar 30, 2014

    POSSABILE CAM PHSSERS
    NOT SURE

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Have an OBII scan done (fault scan) - any good parts store can do it for you for free. Sounds like a dirty or bad MAF (Mass Air Flow sensor) make sure you got all connections tight and there are no vac leaks

Posted on Mar 31, 2011

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Posted on Jan 02, 2017

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2010 Lincoln navigator: it is stuttering and surging while accelerating. Spark plugs/wires/ignition coils/throttle valve body replaced recently with no positive results.


I believe this is a "cam phaser" motor. Web search for these problems. There was a recall on engines like this. A quick explanation is that "cam phasers" are used to time the valves on each cylinder head. Most engines use solid timing chains, but these engines use phasers in-between.

The problem is when the phasers do not adjust each cylinder head equally. They are suppose to. It can be an expensive problem to fix. You might try Marvel mystery oil or risolone to clean the oil passages.

Jul 27, 2017 | Lincoln Navigator Cars & Trucks

1 Answer

2004 f150 5.4 issues with engine running smooth


2 things. The most simple is an air leak in the intake. The engine is getting the same fuel as always, but the additional air is giving you a higher air/fuel ratio. Start the engine, use a pump spray water bottle and mist the intake manifold and any vacuum lines. A change in rpm will reveal a leak. You have a lean knock.

Next, more intense. Look up "Cam Phasers" The knock is a typical clue for this problem. But since the water test above does not cost you anything to try, I mentioned it. I bet the knock disappears around 2000rpm.

What is happening inside your engine is one side is out of time or synch with the other. This is because each "Cam Phaser" sets timing separately for each bank. After 2000rpm the parts are fully extended and the noise disappears.

There are just 2 ways to fix this. Clean the "Cam Phaser" with a solvent that degunks the block or change the Phaser and assume that the bad bank is the one showing lean.

The replacement can be done with a Cheater method or complete frontal disassembly of the engine. A specialty tool is needed for the cheater method(buy, beg, borrow) and one side will probably cost $800. A frontal job, both Phasers is easily $2400.

You might try Risolone, or go to Ford for a Factory chemical. There are also 15 minute cleaners. Replacing oil, filter, and chemical cleaner will be in the $50 range. Might save $800 repair.

May 31, 2014 | 2004 Ford F150

1 Answer

Lifter replacement 5.4L


I must mention that engines with the DOHC emblem had a problem with "Cam Phasers". These would rattle and knock very similar to a Diesel and the noise would fade at about 2000RPM.

This engine has 2 timing chains. Since the Camshafts are on top, the lifters are under the cam. You would need to remove the cam to access the lifters. You will need to keep the cam gear positioned or lose the mark. There are cheater tools which allow you to sneak the cam gear away from the head to change the Cam phasers.

The cam phasers can then be removed. This is perhaps as much as you need done. I retired before this style of engine was built, so I can not tell you if the Camshafts can slide forward to be removed once you remove the Phasers and gear. Otherwise you are looking at a full frontal disassembly, just the Cam Phasers alone required full frontal disassembly in the original Service Manual.

You can read more about this engine and find Videos on the Web. I have an Engineering print but an assembled engine may have clearance issues. Wish I could be of more help, but you can get quite a rattle from the Phaser issues. Don't blame the wrong part.

Mar 24, 2014 | 2007 Lincoln Navigator Ultimate 4x4

1 Answer

My 2005 F150 will not stay running when I slow to a stop or near stop. Where should I look first?


I do not see that the "check engine" light is on. There are some known problems around the 2004-2005 Models that are called "Cam Phasers".

These parts are in the Ford 4.6L and 5.4L V-8's. Basically, each half of the engine has its' own camshaft and Phaser. By using oil pressure, these Phasers are suppose to contract and expand uniformally to sync the valve timing. But one side or the other may get dirty. This means the timing on one side of the engine is different than the other. In essence the engine is binding up internally and that is why it stalls at low RPM.

You need to see a Ford Dealer about testing this defect. For a time, Warranty was extended to about 7 Years and ? number of miles. Even the shortcuts to this repair are expensive.

There can be other causes for your problem of stalling. The ISC solenoid/motor in the Intake manifold could be dirty and jamming. But your possible defects are limited by the lack of a "check light" so the problem would have to be in things the check light does not monitor. A dirty fuel filter, low fuel pressure, a vacuum leak, are the types of unmonitored things that can cause stalling.

I hope my solution is helpful. If your truck engine sounds like a Diesel below 2000 RPM and then gets quiet at higher rpm, it points to Cam Phasers.

Please rate my solution and I hope it is helpful.

Oct 22, 2012 | 2005 Ford F-150

1 Answer

I have a 2003 gmc envoy and was told the camshaft sensor was bad due to the timing chain starting to go out. The shop has quoted me $1700 to fix the timing chain. This vehicle books out at $5300 and I am...


there is no EASY way. I would suspect the cam position sensor, cam actuator or cam phaser first. what is the trouble code number? A shop should be able to actuate the phaser to see if its working or not. The cam phaser actuator can clog with sludge or debris, check and clean the screen. its at the passenger side of the head, you may have to take the PS pump to remove it. Be sure you are using 5W30 motor oil.

Sep 05, 2011 | 2003 GMC Envoy

2 Answers

2007 Ford F-250, 5.4 Engine-Missing, running very rough at idle-very low idle. Engine codes P0011, P0022, P0171, P0300, P0305, P0307, P0316, P2198.


Hello, There is an extended Warranty for "Cam Phasers". I want to say 7 Years and 90,000 Miles. But some of the repairs are on a case by case basis. Years 2004-2008 were affected.

I will tell you what your Codes mean.p0011 and p0022 are both for the Camshaft position sensors. One side is overadvanced and the other is retarded. Code p 0171 is an O2 sensor, Code 0300 is random misfiring, Codes p0305 and 0307 are the #5 and #7 cylinder misfires. Code p0316 is a general misfire when starting up, and finally the p2198 is a rich condition O2 sensor on bank2 sensor 1.

All of these make sense when the Cam on bank 1 is over advanced you will run lean and the Cam on bank 2 is retarded, you will run rich. The misfires are from incorrect timing and affected fuel mix.

There are "cheater tools" for this repair which will cut Labor costs in half. Check the Web for Mac tools, Snap-on, and so forth. The cheater works by pressing down on the internal chain tensioner to make slack in the timing chain. You take off the valve covers and unbolt the Cam (Phaser) gear and sneak it out through the valve cover opening. The CAM PHASERS cost $300 to $500 apiece.

A normal repair without the cheater involves removing the front of the motor up to the heads and still requires removing the valve covers.

I hope my solution is very helpful to you, at least you know why you are getting the Codes you are reading.

Jan 26, 2011 | Ford F-250 Cars & Trucks

1 Answer

Bad idle and stalls out


When running check your Intake manifold for Vacuum leaks. Use a spray bottle of water and mist the seams of your gaskets, a change in RPM means you found the leak. Either retighten the bolts, seal the bad area with atv or replace the gasket.

If you have the DOHC engine you should get a scan. They are free at Autozone or Oreillys and if you find a Code number you can contact us again for info. The DOHC engine had troublesome parts in it called "Cam Phasers". They will exhibit your symptoms in addition to a "diesel engine sound" that fades away after 2000 RPM.

The scan will also show if you have a problem with an ISO solenoid or not. This solenoid is in the area of the airhorn and controls idle quality. Rely on the scanner results and contact us if you have a Code you want explained or tips for installing the parts. The "Cam Phasers" merit more discussion if that problem is yours, I can give suggestions.

I hope you found my solution very helpful and Thanks for using Fixya.

Dec 09, 2010 | 2004 Ford F150

1 Answer

I have a 2005 F150 5.4 litre. My oil pressure guage says the pressure is fine. Quite often, my truck simply just dies and the warning info. comes on saying I have low oil pressure ?? Could this be caused...


Hello, The oil pressure sender is a possibility. Testing the old one wouldn't be worth it as these parts are inexpensive. You may want to contact the Dealer with your Vin# about "Cam Phasers". It is also possible the "idle motor" ISO is letting the RPM drop too low which affects the oil pressure.

Back to the "Cam Phasers", for a few years on DOHC, double cam engines, as these parts wore there were problems with timing, noise and idle. These parts worked with oil flow. Since you are getting a low oil flow and a dying engine it would be good to have this part checked. It is important to use the correct oil and filter to maintain the function of the "Cam Phasers". There is an extended warranty for this problem which I believe runs 7 years.

Aug 21, 2010 | 2005 Ford F-150

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