Vibration/grinding noise from engine.

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bobbybee

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Hello all, I have a problem with some noise coming from my engine. Its a type of vibrating/grinding type of a noise. The noise will go away for a few minutes and the engine noise will return to normal… then the vibrating/grinding noise will return. I’m not particularly good at explaining it. So I have attached a video. So at approximately 1.44 minute mark the noise returns to normal. There are no error messages in my OBD2 scanner and no engine light on the dash.


The truck has 103k miles

At 100k miles, I replaced the spark plugs, the COP’s, leads and the serpentine belt and tensioner.

Not long after replacing the above the truck started idle rough, and sometimes stall when stopped at traffic lights etc.

At 103k miles, I replaced the PCV hoses, the PCV on bank 1, the elbow and hose on bank 2 and the canister purge valve. I did not have this vibration/grinding noise until I done the above. The truck spend most of December in the shop as I broke the front differential and was wanting on parts. Just got it back a few days ago.


EDIT 1
There doesn’t appear to be any performance issues with the truck - it still pulls like a train. The fuel economy is pretty much the same.

EDIT 2
In the video, there are no accessories running. No A/C. No lights. Nothing.

UPDATE 1
I decided to take the truck dune bashing this afternoon - I decided to try the “hell mend you” approach.
The truck performed excellent. It did start to misfire on cylinders 1,3,6 and 8. I was in really soft sand drifting putting the engine under a lot of stress. When I reset the engine light and stopped putting the engine under so much stress. It did not misfire again. The truck has never misfired before in the desert.

UPDATE 2
As suggested by 1BAD454SSv2 - I checked the hoses and canister. Hoses feel good. The canister vibrates like crazy when I disconnect the wire to the canister the noise stops. I will order another canister and replace the hose that attached to the canister as well.

Any help/advice would be appreciated.

Thanks

Duk.
 
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jackjare9455

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Ac compressor? Have you taken the serpentine belt off to see if the noise goes away? (Don’t run for too long like this, just a test to eliminate accessories)
 

jackjare9455

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Turn the AC off too, see if it goes away, then turn it back on, see if it comes back… before you pull the belt
 

1BAD454SSv2

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Check your hose clamps on air intake for the stalling . Loose clamps can let unmetered air in . Noise almost sounds like purge valve or something cycling on and off.
 
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bobbybee

bobbybee

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Check your hose clamps on air intake for the stalling . Loose clamps can let unmetered air in . Noise almost sounds like purge valve or something cycling on and off.
So i had a good feel around the hoses and the canister. I did not notice any loose hoses. The canister is vibrating like hell, when I pull the electrical connector the noise stops (the engine almost stalls, but the noise stops). Maybe I got a dud canister it’s only been on the truck for a few hundred miles. I will order another one and see how it goes.
 

1BAD454SSv2

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So i had a good feel around the hoses and the canister. I did not notice any loose hoses. The canister is vibrating like hell, when I pull the electrical connector the noise stops (the engine almost stalls, but the noise stops). Maybe I got a dud canister it’s only been on the truck for a few hundred miles. I will order another one and see how it goes.
Try and get a motorcraft one no other brand
 
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