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Old 10-14-2006, 12:51 PM   #1
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Engine Rattle at low RPMs?

Anybody's engine sound like a can of ball bearings at low RPMs? I am not talking about the fuel injector taping noise like a diesel, but a very specific sound related to engine speed between idel and about 2500. It literally sounds like loose ball bearings rattling around. It's actually more apparent in the cockpit than in the engine bay. Seems to go away above 2500 RPM.

Head Tech at Ford told me this is "normal" timing belt noise from ZETEC engine.

Sound isn't really getting worse, but it bugs me no end.

Anybody else have this?


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Old 10-14-2006, 01:08 PM   #2
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It's could be your flywheel. That common.
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Old 10-14-2006, 01:55 PM   #3
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It's could be your flywheel. That common.
thats what i was thinking too.
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Old 10-14-2006, 02:56 PM   #4
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Clutch TSB. When you hear the noise, engage the clutch. If the noise goes away, you need the TSB done.
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Old 10-14-2006, 04:04 PM   #5
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hmm I was gonna say headshield rattle noise but maybe not. I took off the heatshield at the bottom of my Cat and that noise went away. It would be most pronounced at about 1900 RPMs
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Old 10-16-2006, 10:30 AM   #6
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All good points, but have had them all checked...

I did find a loose nut on the heatshield and was excited, but ratle was still there. The sound is exactly like a loose heat shield.

I had the clutch and tranny checked last visit to Ford, all in spec.

The noise does not change with the clutch (it remains with clutch in or out).

Seems like nobody else has been told timing belt though, huh?
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Old 10-16-2006, 11:28 AM   #7
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completely remove your heatshields
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Old 10-16-2006, 01:16 PM   #8
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I think i know what that rattle is. I had that same rattle but mine did that noise between 1900-2000 rpm's on the dot. I took it to the dealer and said it was some heat shield, that the bolts had broken loose. It turns out it was not that. I then took it to car-x for some maintenance and while it was up there I asked they inspect the whole exhaust. They told me and showed me that it was an exhaust bracket that had broken and had to be replaced. It was not covered under warranty (should have been). Had a shop do it for me and no more rattles. It's been like four months and starting to hear a slight hummm at that same rpm's. I think I need aftermarket motor mounts to keep engine movement minimal. Not sure though.
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Old 10-16-2006, 03:30 PM   #9
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Do you have a tune? Could you noise be Spark Knock ?

A way to tell is go find some high octane and put 4 to 5 Gal in of 100 or 3 to 4 of 110 and see if the noise goes away

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Old 10-17-2006, 04:18 PM   #10
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I had that happen to me. My exhaust bracket broke and I had it welded back in. Take it into an exhaust shop and ask them to put it on the racks and check it out.
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