5.4L Engine Whine
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5.4L Engine Whine
Hi, this is my first time using this site. I am at wits end with my F-150 and am looking for some help. I have a 2002 F-150 SuperCrew 4x4, 5.4L with 96K miles. I have a whine coming from the engine that seems to be more noticeable on the drivers side. The whine is constant and is consistant with the RPM's. I have replaced the power steering pump, idler & tensioner pullies, and recently replaced the old serpentine belt with a new Gator belt. Still no change. Since I don't have a stethescope, I poked around with a long screwdriver to magnify the sound. No noise noticed by the alternator or water pump. Sounds like it's coming from the left side (from the drivers seat) of the engine by the left side timing chain cover. I'm afraid the noise could be internal. Has anyone ever encountered this? Please help! Thank you in advance for your help.
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OK, today I removed the serpentine belt and the noise went away. Now I just need to determine what is making this whine. I've already replaced the factory belt with a new Gator belt which didn't help. With the belt on, I can hear the normal power steering whine, but can hear the other whining noise above this. Any idea if maybe the fluids running through the tranny cooler lines could cause this noise? Again, thank you in advance for your help.
Laughing Gas
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From: DC
OK, today I removed the serpentine belt and the noise went away. Now I just need to determine what is making this whine. I've already replaced the factory belt with a new Gator belt which didn't help. With the belt on, I can hear the normal power steering whine, but can hear the other whining noise above this. Any idea if maybe the fluids running through the tranny cooler lines could cause this noise? Again, thank you in advance for your help.
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OK, today I did some more poking around and I am now 99.95% sure that the noise is coming from the recently replaced power steering pump. I'm guessing that the remanufactured pump has bad bearings, or is this a common problem with these pumps (Cardone pump)? Is there a better quality pump out there? Thank you in advance for your input.
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I have the same problem. Did you get your issue fixed? I'm at my wits end trying to find a fix.
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HEEELP!!! Engine whine '03 5.4
I'm still at a loss with this noise. I've replaced the PS pump and have taken off the serpetine belt and still have the noise. It sounds exactly like a bad PS pump would. When I start the truck, it takes about 5 seconds and then the noise/whine starts to kick in. It almost sounds like its coming from below the throttle body, maybe the intake manifold. Is there anything there that would make this whine?
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Joined: Jun 2010
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I'm still at a loss with this noise. I've replaced the PS pump and have taken off the serpetine belt and still have the noise. It sounds exactly like a bad PS pump would. When I start the truck, it takes about 5 seconds and then the noise/whine starts to kick in. It almost sounds like its coming from below the throttle body, maybe the intake manifold. Is there anything there that would make this whine?
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