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Toyota Sienna Engine Problems

108 messages,  Last post on Apr 29, 2013 at 10:44 AM

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What is this discussion about? Toyota Sienna, Van


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Messages Page 11 of 12

#95 of 108 Re: 2002 Sienna LE - ECM Replacement [sphornets] by rustycamp

Nov 09, 2012 (6:28 am)

Replying to: sphornets (Oct 12, 2011 7:45 am)
What octane fuel have you been running? I recently had all that fixed I hope. But prior to that, I either disconnect the battery or take it to an auto part store to reset the light. The light will stay off as long as I run high octane fuel with no ethanol.

#96 of 108 Piston slap engineering by stower17

Dec 02, 2012 (10:16 am)

GM addressed the reason for piston slap in the 1990's and I believe Subaru did as well. It was mainly for fuel economy. Engines designed with piston slap have short skirt pistons generally and the pistons are considerably smaller than the engine bore they operate in until the engine warms up. As the engine warms, the pistons expand and make a near perfect match with the cylinder bore. Engines develop piston slap at different mileages and that is due to many factors, non of which are to be concerned with. As for manufacturers placing a warning or notice in owners manuals about piston slap; probably won't happen. An owner with rod knock or other engine noise might be under the impression the noise is normal if the owners manual said that loud cold engine noises are normal, making the manufacturer liable. Most manufacturers are going this way for fuel efficiency so now more people are aware of it and are concerned with the slapping noise. It's a little frustrating at first to listen to but you get used to it. My slapping engines have 97,000 mi, 248,000 mi, and 153,000 mi. No effects on longevity! Happy driving!

#97 of 108 LS1 engines by stower17

Dec 02, 2012 (10:40 am)

Just wanted to add that my father and brother have several LS1 powered camaros and corvettes. All have piston slap and some go away once the engine is warm and some continue slapping the whole time the engine is running. I don't understand how that is but some of their cars are going on 15 years old with over 150,000 miles and still run like the day they rolled off the line. My aluminum gm v6 engines, my 2.2 ecotec, and my silverados all have it. It is a mystery for sure.

#98 of 108 Regarding sludge by trendao

Dec 10, 2012 (8:14 am)

Regarding sludge, the only thing I've noticed is in my oil fill cap I see some slight reddish brown pasty gel. The engine probably burns about 1/2 to 1 quart per 5000 mi. So, just to be on the safe side, I've just started adding a dose of Seafoam(r) additive to the crankcase to keep the internals clean. The gel is not as noticeable as it was before.

#99 of 108 Re: Regarding sludge [trendao] by ateixeira

Dec 10, 2012 (8:21 am)

Replying to: trendao (Dec 10, 2012 8:14 am)
I would try using synthetic oil and/or shortening the oil change interval.

#100 of 108 2008 Error Code: P0015 by ummix3

Mar 24, 2013 (7:18 am)

#101 of 108 2008 Error Code: P0015 by ummix3

Mar 24, 2013 (7:18 am)

I've had my 2008 Sienna LE since for five years now. Always had it maintained at the dealer around my way. I've got 107,000 miles on it, and recently had the VSC, TRAC Off and the check engine lights come on. Took it to the dealer and they mentioend that there is a a service bulletin for this problem: TSB0094-09.
 
They want to charge over $5,400 to fix this problem. I don't understand it. I've paid $close to $31,000 for this car the past five years. If I've done everything right, then why should I have to pay this large an amount to fix something that Toyota knew was a problem.
 
I've opened up a case with Toyota, and hoping they will help. I'm already in the market for a new car, but if the new Toyota's are built in a way that you have to have a major repair done on them after 107,000 miles, then they are just not worth it.

#102 of 108 Oil Leak on 2012 with 5k miles by rwolf1

Mar 28, 2013 (11:00 pm)

I took my 2012 Sienna in for a fluid leak. To my surprise it was an oil leak coming from the top part of the engine. They decided to replace the block and the two cylinder heads due to oil leak between the head and the block. They reported that the leak may have been caused by potential damage during engine assembly.
 
Has anybody else had problems with oil leaks like this? Especially on a Sienna with such low mileage. Should I be concerned with having them replace the block and cylinder heads and re-using all of the other parts from the original engine. they put in a new crankshaft and pistons. However, they reused the valves and other parts.
 
I feel like I own a new vehicle with a rebuilt engine!!! Should I be concerned that they have gone into the engine this deep? I have a concern that they have done so much work under the hood that there will more chances for problems in the future. We are the type of people to buy and hold our cars. We currently have a 12 year old Sienna.
 
Concerned Toyota owner...

#103 of 108 Re: Oil Leak on 2012 with 5k miles [rwolf1] by ateixeira

Mar 31, 2013 (5:33 pm)

Replying to: rwolf1 (Mar 28, 2013 11:00 pm)
Only 2GR rebuild I've seen here...
 
Ask for a 100k warranty on the powertrain. Seems reasonable to me.
 
A friend got a new trans on her Ford and they did that for her (for free).

#104 of 108 Re: Oil Leak on 2012 with 5k miles [ateixeira] by afrmthabay

Apr 26, 2013 (8:22 pm)

Replying to: ateixeira (Mar 31, 2013 5:33 pm)
I got a 2011 Toyota Sienna SE and had an engine leak at 15,000 and they tried to fix it twice but did not. They just ordered me a new block.

Messages Page 11 of 12

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