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Engine Vibration

2181 Views 21 Replies 8 Participants Last post by  Kamps989, 
Kamps989
Hey all,
With our growing family my wife and I purchased a new to us 16 Sienna XLE with 78K miles. The van is in pretty good condition and runs great. However there is an engine vibration at around 1,200 RPMs everytime it revs past it, slightly better when warm. I read a thread here about it being an exhaust mount related issue from the factory? My other concern would be engine mounts, are these a common fail point on these vans? It came Blue CPO from a Ford dealership so it has a warranty and I am going to have them take a look but I'm not confident they will find anything.
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Can you post a link to the Lexus forum that has the fix? Would love to see some pictures of it. And post pics of your fix too please.
Its unseasonably mild here all winter so far so the drone isnt nearly as bad. The colder it is the more it drones so I am not nearly as motivated to get off my ass and do something about it. LOL.
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Kamps989
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Therbi said:
Can you post a link to the Lexus forum that has the fix? Would love to see some pictures of it. And post pics of your fix too please.
Its unseasonably mild here all winter so far so the drone isnt nearly as bad. The colder it is the more it drones so I am not nearly as motivated to get off my ass and do something about it. LOL.
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The annoying droning engine sound - ClubLexus - Lexus Forum Discussion

RX - 3rd Gen (2010-2015) - The annoying droning engine sound - hi all My 2013 RX350 (all-wheel) has a super annoying droning sound when pressing gas pedal - it is not the smooth-humming but a kind of low cat-purring sound that is more pronounced when in low RPMs. The dealership can't tell the...
www.clublexus.com

Today I installed a Toyota exhaust damper similar to the people on the Lexus forum trying to emulate this Lexus TSB fix.

Gas Font Tool Machine Scientific instrument


Mine ended up looking mine this.
Automotive tire Tire Bumper Vehicle Automotive design

Automotive tire Automotive exhaust Tire Tread Motor vehicle


With this on and the engine hanger removed I'd say that pretty much all discernable drone is gone. I did try putting the front mount on with this damper and the drone came back. My next step is to put high temp bushings between the 2 pieces of the exhaust bracket next week when I get them but if the drone returns again I'm just going to leave it off, I will report back on if it's successful. I feel like that bracket isn't all that important as the manifolds are on either side of it and there is another hanger not far back, but I'd still prefer to keep it if I can. Pretty crappy exhaust design with how rigid everything is.

As of now I am loving our new car without the nasty buzz!
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