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Toyota Sienna Engine Problems

63 messages,  Last post on Nov 30, 2009 at 10:59 AM

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#41 of 63 Re: Toyota Sienna Check engine light [ateixeira] by jjoseph2 Nov 12, 2007 (6:17 pm)
Replying to: ateixeira (Oct 24, 2007 7:24 am) Thank you for your help. It was just a loose gas cap. After 100 Miles it reset by itself. Replies to this message: ateixeira (Nov 13, 2007 1:18 pm)
#42 of 63 Re: Toyota Sienna Check engine light [jjoseph2] by ateixeira Nov 13, 2007 (1:18 pm)
Replying to: jjoseph2 (Nov 12, 2007 6:17 pm) Glad to hear it was minor.
#43 of 63 I too have this hum noise with 2007 Sienna LE by hbandurski Dec 11, 2007 (8:41 pm)
Take a look at this message where we are discussing this weird noise and see what a dealer and toyota engineering said to one of the sienna owners.   http://townhall-talk.edmunds.com/direct/view/.f169371/7   In my case my wife (and now myself) can't stand this noise - weird noise is weird noise - it shouldn't be there.
#44 of 63 Engine Noise in Cold Weather by rob105 Feb 29, 2008 (12:37 pm)
I have a Toyota Sienna 2007 with 19K miles. The engine seems much louder from when I first bouhgt the car. When it start from a cold start I can hear a clicking sound till the engine warms up. The dealer has told me this is normal and it is the fuel injectors. Once the car warms up I don't hear it as bad. Has any one else experienced this? Thanks. Replies to this message: zakki (Jul 09, 2009 7:55 pm)
#45 of 63 Toyota Sienna engine noise by philtao Jun 08, 2009 (1:27 pm)
Just bought a Sienna Le 2008 w/ 30k on it from a local dealer. There seems to be engine noise somewhat like a diesel engine, which I've ridden on other Sienna le 2005 with the same mileage with no such noise. Also on my Le 2008, I can hear the gear shifting once or twice before reaching 35mph. Other times, when I was driving very slowly and stepped on the gas, the van seemed to be more like on neutral with loud noise and than it caught the drive gear again. What's wrong with the engine?? Help?? Should I take back to the dealer to check?? or what??
#46 of 63 04 Sienna LE Exhaust Heat Shield by da763 Jun 15, 2009 (12:21 pm)
I had the oddest thing happen a week ago. I started hearing a horrible racket from the engine which sounded like it was rev'ing like crazy, yet the tach needle never moved. So, I popped the hood to find that a heat shield that was supposed to be attached to the exhaust pipe leading from the manifold on the front cylinder bank, had sheared off of the two screws holding it to the pipe and had fallen forward into the engine fan.   After the engine cooled down, I reached down and removed it. Since there's quite a bit of room between the pipe and any other component, unless this is covered by a recall or TSB, I'm not inclined to fix it.   Has anyone else had this happen? Replies to this message: wwest (Jun 16, 2009 8:37 am) buckynix (Jul 28, 2009 4:38 pm) wr31 (Aug 20, 2009 7:33 am) da763 (Aug 20, 2009 9:20 pm) wr31 (Aug 20, 2009 7:29 am)
#47 of 63 Re: 04 Sienna LE Exhaust Heat Shield [da763] by wwest Jun 16, 2009 (8:37 am)
Replying to: da763 (Jun 15, 2009 12:21 pm) The heat shield you removed was probably there to prevent melting of the plastic parts........Radiator shoud, fan blades, etc.
#48 of 63 Re: Engine Noise in Cold Weather [rob105] by zakki Jul 09, 2009 (7:55 pm)
Replying to: rob105 (Feb 29, 2008 12:37 pm) I have a 2007 Sienna with 49,000 Km, and have the same problem. Dealer said that the noise is due to a variable valve gear bolt being too close to the front engine cover and had agreed to replace the bolt with a updated one. Apparently, Toyota issued a TSB on this issue. My van is still at the dealership undergoing repair. Will let you know how the repair worked out.
#49 of 63 Re: 04 Sienna LE Exhaust Heat Shield [da763] by buckynix Jul 28, 2009 (4:38 pm)
Replying to: da763 (Jun 15, 2009 12:21 pm) Hi, We've got the same problem with the heatshield falling off into the fan on our 2004 Sienna LE. I'm wondering if anyone has removed this shield and if any issues were noted. I'm concerned about melting the fan blades. Please let me know if you've tried to run without it. Thanks. Replies to this message: wr31 (Aug 20, 2009 7:33 am) da763 (Aug 20, 2009 9:20 pm)
#50 of 63 Re: 04 Sienna LE Exhaust Heat Shield [da763] by wr31 Aug 20, 2009 (7:29 am)
Replying to: da763 (Jun 15, 2009 12:21 pm) I have the same car and had the exact same thing happen last week. I also removed the broken shield to eliminate the noise, but am interested in replacing it. Did you ever replace yoursn or find out if Toyota recalled the part?

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