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Toyota Sienna Engine Problems

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

You are in the Toyota Sienna Forum.

What is this discussion about? Toyota Sienna, Van


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Messages Page 9 of 11

#80 of 108 Re: 2002 Sienna LE - ECM Replacement [steven52] by wwest

Mar 08, 2011 (10:31 am)

Replying to: steven52 (Feb 10, 2011 4:31 pm)
For more than 3 years I have had a perfectly good, brand new, oxygen sensor stored in the spare tire wheel well of my '01 F/awd RX300. The fault would not stay cleared so I purchased a new oxygen sensor to install.
 
I guess the threat of being tossed into the waste can caused the old one to perk up and fly right...;<)

#81 of 108 Re: Engine Noise in Cold Weather [zakki] by adam07

Jun 11, 2011 (4:02 pm)

Replying to: zakki (Jul 09, 2009 8:55 pm)
Was the problem fixed?
I am getting the same noise from my 2008 Sienna.

#82 of 108 Issues with 08 Sienna by smward89

Aug 08, 2011 (5:55 pm)

My 08 sienna has had the check engine light, VSC light and the TRAC OFF light come on all at once twice in the last month. This last time the check engine light was flashing. What does this mean?? The dealer maintance shop is trying to tell me it is bad tires but that doesnt sound right. Any insight would be nice! Thanks!

#83 of 108 Re: Issues with 08 Sienna [smward89] by fibber2

Aug 11, 2011 (5:39 am)

Replying to: smward89 (Aug 08, 2011 5:55 pm)
A flashing chk engine light should not be ignored. A steady state light means there is a stored code. It could be something current, but most likely it is an 'event' that happened in the past. A flashing light is warning you about something that is happening NOW and could cause damage. This quite often happens with a cylinder misfire, and that could lead to major engine damage.
 
Bad tires? Is this an AWD van? Toyota is much more forgiving than say Subaru on the issue of mismatched tire diameter, but I suppose that if you were way off it might log an error. The skid control and traction control systems do use wheel speed sensors as an input, and it might not like a constant rotational difference if a tire was way off from the others.

#84 of 108 Re: Issues with 08 Sienna [fibber2] by smward89

Aug 11, 2011 (7:11 am)

Replying to: fibber2 (Aug 11, 2011 5:39 am)
Its a front wheel drive. All of the codes that came up were misfires in all six cylinders and the tires all match and we had them rotated and balanced to see if that fixes the problem but I don't see how they are blaming perfectly good tires for the misfires. The check engine light was flashing so I stopped immediately.

#85 of 108 Re: Issues with 08 Sienna [smward89] by wwest

Aug 11, 2011 (8:04 am)

Replying to: smward89 (Aug 08, 2011 5:55 pm)
Tires...ONLY if you have F/awd, and still maybe even then.

#86 of 108 Re: 2002 Sienna LE - ECM Replacement [steven52] by sphornets

Oct 12, 2011 (7:45 am)

Replying to: steven52 (Feb 10, 2011 4:31 pm)
I have a 2001 Sienna and have been chasing the CEL for 3 years. Name a part and I have replaced it and the CEL is still on.

#87 of 108 Re: Toyota Sienna engine noise [philtao] by capitalfederal

Nov 17, 2011 (2:52 pm)

Replying to: philtao (Jun 08, 2009 2:27 pm)
I have a 2010 Sienna, now with 40,000 miles on it but it sounds like a diesel when cold and since I purchased it new.
The dealer and the Toyota tech rep say that it is PISTON SLAP and that this is normal. Do your reserch for what piston slap means ( bad news ) but Toyota seems to think that its OK I guess we are all stupid. This will be my last Toyota, I know what Piston Slap does to an engine.
Good luck with yours.

#88 of 108 Re: Motor noise at cold engine start up [craig72] by capitalfederal

Nov 17, 2011 (3:44 pm)

Replying to: craig72 (Nov 16, 2010 2:40 pm)
It seems that there are a few people with the same problem of Piston Slap, does Toyota really think that they can fool all of the people all of the time?

#89 of 108 Piston Slap Is Normal by stower17

Nov 24, 2011 (11:53 am)

I know this is an old thread but I would like to share my thoughts on the issue. I only buy GM vehicles and I have been experiencing piston slap since the mid 1990's. The first vehicle you own with piston slap makes you think that it's defective. GM always ensured me it was normal and will not affect longevity in any way. In my experience they are correct. All my vehicles with piston slap have not been affected by it and are still running with over 200,000 miles. Nissan, Honda, Toyota, Ford, and GM all have complaints about piston slap but there is no defect. These engines are aluminum so they will be louder until they warm up (metal expanding). In some engines a slight amount of piston slap is normal when the engine is at moral operating temps, also. For all of you worried about the noise, I would not worry about it. Toyota and all other manufacturers build their engines to precise specifications, follow their maintenance schedule and your engine will last. If your engine performs as it should, doesn't burn excessive oil, does not have a check engine light on, and gets decent fuel mileage, every manufacturer will tell you it's normal. Take their advice because there is nothing wrong with your engine. Hope this helps all you Toyota owners experiencing this problem. Drive safe!

Messages Page 9 of 11

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