Question about 2004 Ford F150

4 Answers

I have a 2004 5.4 v8. It has 111000 miles on it. Had to replace cps twice in a month. The front passenger side of engine is making a rattling, whining sound until you get to 2000 rpms. Please help.

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  • flanaganeddi Apr 09, 2011

    What do you mean by engine tuning out. This sound is also happening in park.

  • flanaganeddi Apr 09, 2011

    The sound happens while driving in park. Kinda sounds like when your power steering fluid is low, but it's not the power steering.

  • flanaganeddi Apr 09, 2011

    Cmp not cps. Sorry.

  • flanaganeddi Apr 09, 2011

    Its actually the cmp(cam position sensor) that went out sorry. I've been told by guys i work with it sounds like timing chain.

  • flanaganeddi Apr 09, 2011

    It sounds like a turbo charger

  • flanaganeddi Apr 09, 2011

    Some forums say something about a cam phaser, but i cant find anything about them anywhere else.

  • flanaganeddi Apr 12, 2011

    thanks fot the help. i unplugged the vct wires to look at them and when i plugged them back in the whining noise went away but there is still a small rattle noise.??? it seems fixed though.

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  • Ford Master
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Hello
First off there is little chance that the crankshaft position sensor failed twice in one month, something else is causing the fault code to set, it can be a connector problem or engine problem. Is this noise on the top of the engine? does it sound like the camshafts chains or rattling? I strongly suggest you have this noise diagnosed by a local Ford dealer asap, what ever this is it is causing some kind of fluctuation in the crankshaft speed I suspect, and this is triggering the CPS sensor fault. It is EXTREMELY difficult to diagnose a noise like this without being there with a mechanics stethoscope. I was a Ford dealer technican for 30 years and I do know that the cams and the cam drive chains are somewhat of a problem on this engine as far as noise issues go

Posted on Apr 09, 2011

  • yadayada
    yadayada Apr 10, 2011

    If it is the Camshaft position sensor then you definitely have problems Camshaft drive components, more than like the camshaft VCT (Variable Valve Timing) actuator is not working and the oil supply hole is plugged, this wears out the early plastic Camshaft chain guides and causes the rattle noise you have and most lily the whine is the chain running dry. The loose Camshaft chain is causing the CMP signal to fluctuate and the triggers the fault code. This type of problem is common in the 5.4Liter V8 OHC engine and there are dozens of complaints about this type of Camshaft chain and Camshaft chain and VCT actautor related rattle noises. How about giving me a chance to answer the problem. I'm a Ford Trained and Ford certified Master Technician, so I do have some knowledge of the problems. You will need to pull the front cover off the engine and inspect the Cam chain and lubrication issues. This job requires special tools and training to successfully complete, if you get it wring you can SEVERLY damage the engine.

  • yadayada
    yadayada Apr 11, 2011

    Ford's cam phasers are specially designed, computer-controlled cam gears that have the ability to adjust camshaft position (centerline - advance or ******) while the engine is running. They are used on all 2005 and newer so your engine doesn't have the phasers, Ford 3 Valve Modular engines. Since the Modular 3V engine uses two camshafts, one phaser is required for each camshaft - two cam phasers per engine. If the oil supply in is restricted by sludge or metal particles within the engine the phasers can cause allot of noise. This erratic control of the cam timing can and ioften does trigger a CPS fault code.

    How do the cam phasers work?

    Engine oil is pressure fed through a series of passageways in the cylinder heads and camshafts, then out into the cam phasers. The engine computer controls a pair of solenoids that adjusts this oil flow through a series of chambers inside the cam phaser. Located inside these chambers are vanes, attached to a free-floating central hub. The hubs are directly attached to the camshafts, and as oil is allowed into and out of these chambers, the position of the cam can be retarded up to 60 crankshaft degrees.

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  • Ford Master
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Hi, if you have the Triton engine, it has variable valve timing and is very complex. It does sound like you have a timing chain problem. The phaser is part of the valve timing system. The procedure for changing the timing chain is many pages and is too long to post here. You can access the procedure yourself if you sign up for a free account at Autozone.com. Here is the URL: http://www.autozone.com/autozone/repairinfo/repairguide/repairGuideContent.jsp?pageId=0996b43f802e4cbb

Or, you might consider buying a repair manual or borrowing one from your local library. You can cancel this FixYa question, but I'll still be happy to answer any further questions.

Posted on Apr 10, 2011

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  • Master
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I would assume that the problem exist even when the truck is at stop.
See if there will be changes when you change fuel (try a different octane).
The problem may be mechanical in nature. See if the heat shields are all in place. You may need to clean out the MAF sensor at the intake. Other than that you may need to ****** the timing a little bit or the EGR needs cleaning or the valve or the solenoid would need replacement. This has been observed by some owners to cause a rattling, whining or similar to a spray paint rattle.

Posted on Apr 09, 2011

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  • Master
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Hi, Rattling and Whining Noise is due to the following reasons:

1. Engine Rubber Mounts (Solution: Get them replaced)
2. Constant Velcoity Joints---CVJ (Solution: Get them replaced or greased---there are steel balls in it which may rattle)
3. Steering system (Rack & Pinion): Check for loose Inner Ball Joints as well as Torn Rubber Bellows (which means there is dust, foreign particles between moving parts)
4. Steering System(Column): Loosened parts.
5. Engine Tuning Out.

These are primary reason, eliminate one by one and you will come to know the root cause

Posted on Apr 09, 2011

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