Last post on Jul 18, 2007 at 10:32 AM
You are in the Toyota Sienna
What is this discussion about?
Toyota Sienna, Van
#3197 of 3687 Re: piston slap [p53mustang]
Apr 14, 2005 (3:24 pm)
i know exactly what you are talking about. i purchased my 2001 sienna in october of 2000. almost instantly i noticed that it made the exact same noise you are describing when it runs cold. and it happens on every gear as it revs up to the point where it is about to switch to the next gear. and of course, it goes away once the engine warms up. so for the past 4+ years, my rule has been to let the car run idle until the temp needle clears the very bottom notch.
moreover, i was recently researching how the engine works, and came across octane factor. turns out that the lower the octane, the higher the chance that the fuel/air mix will self combust during the 2nd stroke when a piston comes up and compresses that mix right before the spark ignites it. that sort of "explosion" is not the same as the one caused by the spark, and usually causes, surprise, piston slap. the article noted that any engine with compression ratio higher than about 9.5:1 should think about using a higher octane. i immediately searched and found out that my particular sienna engine has a 10.3:1 ratio. so now i am litteraly waiting for my next trip to the gas station and fill up with super.
as for the toyota dealer shops, i though about doing what you did, which is the only way that anyone could prove to them the situation. unfortunately, i am not in a position to do so. nevertheless, i knew (based on all my previous experiences with such dealer shops, and not just toyota) that the response i would get is the same as the one that i would get from my 5 year old if i were to ask him something like that. with all due respect to the toyota quality, the repair personnel are quite clueless when it comes to more than everyday questions. you can see that they have no idea, but they feel the urge to act as though they care. so they start selling you stuff immediately. an engine check light once came on, so i took it to the dealer shop. they ran a computer test for 2 hours ($40/hr x 2, non-refundable no matter what) and told me that i need a new catalytic converter, which is $400. i asked them how sure they were that this is exactly the part that needs to be replaced. namely, what would happen if following payment and installation, the light would still be on. they said that they could not guarantee that the catalytic converter was, in fact, the problem. and they would not refund me anything. so i said no thanks since the car does not suffer. about half a year after, i started feeling a definitive lag between pushing the gas pedal and engine's reaction. it was as though something was abstructing the air flow. so i took it to the dealer shop and showed them the problem. immediately the guy next to me said that the air filter must be replaced. and before i could say anything, he left and came back with a new filter with such speed that would make Cark Lewis and Michael Johnson look like toddlers. obviously, that was not the issue since the lag was so flagrant. so they ran yet another test (aka $40) and determined that it was the air flow regulator. the funniest thing is that the engine light disappeared after that repair. good thing i did not shell out $400 to replace a catalytic converter that was, after all, just peachy. hense, i was thinking about asking them for my $80 from the last 2 hour test that clearly had a bogus conclusion. but talking to these people is like masturbating with a cheese grater: slightly amusing, but mostly...painful.
let me know the latest, p53mustang
#3198 of 3687 Re: piston slap [drbeavis]
Apr 15, 2005 (8:19 pm)
Okey finally the service guy called me yesterday and said that they finally have an answer from Toyota but we'll wait further instruction from Toyota as to what they need to do with my van as my next step.But two days ago I emailed Toyota about my problem with my van and pointed out that if it's just the dealer making up stories that they can't get a hold of anybody from Toyota tech line reflects bad on Toyota I asked if there's a lot of failing Toyota that their tech line is just swarming with calls. Either way wether the dealership is making this up or Toyota just couldn't field the call reflects badly on Toyota. I emailed that this is exactly one of the reasons why the Big Three isn't as big as they used to be.
So I got an email with a case number the following day telling me that the service manager will contact me no later than Tuesday next week with regards to how to handle my situation.
I emphasized on my email that part of my wifes job is visiting baby's and kids born from indigent parents who live in some poor and bad neighborhood. My wife refuses to drive my 4runner , so getting stalled by this van is not a good idea.
I also mentioned that i've been visiting a lot of forums over the internet and i've been seeing a lot of complaints about Toyota and it's service. I did mention that I am emailing them as proof that I am trying my best to to resolve this matter in a civil manner rather than post something bad right away without trying.
I asked the service advisor what they had done on previous cases like this . He said the last time he worked on such problem was the Previa model he said they changed the engine block and it took about a week.
So far this is all I got , i'll update next week.
Have a great weekend guys/gals
#3199 of 3687 heater knob light inside dash
Apr 16, 2005 (10:02 am)
Anybody ever changed the dash light that illuminates the selector dial for controlling the a/c and heater airflow? Mine has burned out and I don't know how to get to the light. Also anybody ever change the "push-type" lights by the rear-view miror? Thanks
#3200 of 3687 How do you adjust the rear brakes
Apr 16, 2005 (4:28 pm)
Can someone give me some advice on how to adjust the rear brakes on my 1999 Sienna van. I have tried applying the parking brake several times but this does not seem to adjust the brakes.
Is there any other way to adjust the brakes?
The rear brakes seem to be doing very little, thus my need to adjust.
Apr 18, 2005 (3:42 am)
I also have the same problem with my van. When the car is cold and just before each shift I get what sounds like to me a rapid tapping. Fine after warm-up.The van is a 2001LE loaded with 62,100 miles on the clock. I took it into the dealer and they came up with noisy fuel injectors..... If you think about it this makes some. sense When the car is about to shift the control is to cut back on the fuel for a smother shift. After the shift the noise is gone until the next shift and so on. The thing is that this has become just part of the car for me and I live with it. So with 62,100 miles who knows. The mpg is perfect on regular gas you gotta love that. One more thing I' am not so sure I would trust the dealer to do any internal engine work such as a new block.
I knew if I hung out long enough I would find others with this problem. I would like to know what's the highest mileage so far with this rapid tapping.
#3202 of 3687 Re: '04 Sienna Motor Start-up noise [mohala]
Apr 19, 2005 (9:51 am)
I have similar problem on my 2003 sienna. I am wondering what is the problem you found out.
#3203 of 3687 Power Door (again) and Thanks for Help!
Apr 20, 2005 (1:06 pm)
I've read many of the posts on the power door thing. I'm not clear if my problem is the same as others. My problem is that when the power door closes, sometimes it does not close all the way shut so that when put in gear the annoying beep goes off indicating door not closed even though it looks closed. If I help it to close by pushing it from the inside or outside, the problem does not occur. I thought a shot of wd-40 might help but no dice. Doesn't seem like a compuer module type problem Any help would be appreciated.
Wanted to say thanks to all for their postings re: the read door handle fix. Mine snapped at 130k miles. Had I not found this site, I probably would have taken it in to the dealer and gotten ripped off. Instead I ordered the part from Toyota for $60 or so (still a rip off) and put it in myself. This job is not that difficult to those who are considering taking it on. You just need to pull off the plastic pieces surrounding the back window. Mine just came out with a little tug. The big plastic piece covering the lower portion is a bit tougher, but is still held in mainly by clips and three nuts (one at the strap and two on the other side. Once the plastic trim is off, the fix is easy. Just three nuts to undo, remove cable, replace piece and reverse process. I only broke one clip, which cost about $2. No problem. Believe me, if I could do it...
Thanks again to the posts and the posters.
#3204 of 3687 power window
Apr 22, 2005 (9:41 am)
I have a power window motor that is out on the passanger side. I went to autozone they have a replacement for 87 bucks. Pretty reasonable. Do I just tug on the panel on the side of the door to get access to the motor. Also does anyone know if its a simple installation. as in take these bolts off and put the new one on with the wires? For some reason I think it might be more complicated.
#3205 of 3687 Re: Power Door (again) and Thanks for Help! [fatherof3]
Apr 23, 2005 (3:09 am)
do you have connectors on the door and door pillar? maybe cleaning them with a pencil eraser (this will be familiar procedure to anyone who used to race slot cars as a child ) will remove deposits and create better continuity between the contacts. that's where i'd start.
#3206 of 3687 Re: piston slap [p53mustang]
Apr 25, 2005 (5:56 pm)
My 2002 XLE Sienna has the same problem. The tapping noise is right around 1900 RPM until the engine warms up. Mechanics at Toyota dealer said it was regular engine noise.
I am very interested in:
1) How did you contact Toyota (not just the dealer) to get them to get the dealer moving?
2) Did you get a final answer from the dealer?