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Old 10-19-2016, 11:39 PM   #11
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Default Re: T1N Engine Rattling, safe to drive?

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I can feel by hand if it's loose? It's not wobbling when running as far as I can tell

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You should be able to feel it by hand. Check the upper pully's on the serpentine belt also. You should be able to see those moving around if it's them.
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Old 10-19-2016, 11:50 PM   #12
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I have AAA, but I am on a time crunch.... Is it possible it is an idler pulley? It seems to go away when driving

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Old 10-20-2016, 12:05 AM   #13
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Any suggestions for mechanics near Copper Harbour, MI?

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Old 10-20-2016, 12:11 AM   #14
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Default Re: T1N Engine Rattling, safe to drive?

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Originally Posted by alexk243 View Post
.... Is it possible it is an idler pulley? It seems to go away when driving

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One check is to look closely at the serpentine belt as it drives/spins the components.

It should be running smoothly. No jumping or wandering back and forth.

Look at the engine driven fan to make certain that all the blades are intact.

A close inspection of the harmonic balancer may reveal something, but there are different failure modes. Sometimes it is difficult to see that the rubber bonding has failed.

I know it is a tough decision to not just go and roll the dice, but the consequences can be pretty severe when you don't know what the problem is.

Has the engine oil level been checked?
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Old 10-20-2016, 12:22 AM   #15
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Yeah engine oil is fine. Changed recently with all filters changed.

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Old 10-20-2016, 12:40 AM   #16
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Default Re: T1N Engine Rattling, safe to drive?

Engine and exhaust mounts can sometimes break. Or one of the heat shields around the turbo or exhaust could be contacting the engine. Pull on the engine and exhaust and give it a good visual inspection with a bright light.
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Old 10-20-2016, 12:58 AM   #17
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Default Re: T1N Engine Rattling, safe to drive?

The heatshield on my van rattles at exactly 1200rpm without fail if that helps
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Old 10-20-2016, 05:33 AM   #18
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Default Re: T1N Engine Rattling, safe to drive?

check the harmonic balancer too. Ticking time bomb. I went about 700 miles like that.
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Old 10-20-2016, 02:29 PM   #19
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So the outside ring on the harmonic balancer is loose and spinning freely... Appears the bolt is tight... How much time do I have? I am 500 miles from home.

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Old 10-20-2016, 03:08 PM   #20
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Default Re: T1N Engine Rattling, safe to drive?

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... How much time do I have? I am 500 miles from home.

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How high is up?

The proper answer is that it needs to be repaired. If it comes loose it can do a bunch of damage.

One possibility. The ring will pass over the serpentine belt pulley. Remove the serpentine belt, remove the separated ring, and re-install the belt.

That should get rid of the balancer failing.

Were I to try that I would keep my speeds down to 55 mph to keep engine rpm's down. That said, there may be rpm ranges where more vibration is noticed than in others. If discovered I would avoid those ranges.

There must be many people who have run the T1N with a partially failed harmonic balancer which wasn't doing the job.

To be clear. I have never tried what I suggest above. I have no idea what the risks of trying it may be.

Good luck.

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