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Toyota Sienna Maintenance and Repair (2003 earlier)

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Comments

  • In response to message 1234; dumping a Sienna transmission is not uncommon. Mine went a less than 24K.
  • inkyinky Posts: 370
    Anyone have this Toyota option. Mine went out picture wise yesterday. Wondering if that is common. Warranty will fix but always the pain getting that done.
    Also, Sienna trannys were bad for the 2000 model year as I remember.
    INKY
  • klukenkluken Posts: 4
    ACtually I have had a few cars that the A/C smeels on. Seems in todays more efficient A/C units the coils are tighter and any moisture that gets trapped can quickly get moldy or mildew, I have had similar problme in my home AC at end of winter due to humidifeir. It seems to be a bigger problme in the East and SE areas where humidity is high, probably Texas too. My I35 on occasion smells mildew like as well, my Toyota's '97 Avalon was probably worst of the imports I have had.
  • Need some help. I have a 2001 sienna with 13k miles. I have found in the last 2500 miles that I am hearing a lot of knocking and ping (valve noise), crunching, not during hard acceleration but just when I am loafing along at around 30-35 miles per hour then hit the gas lightly to maintain speed. My first thoughts were to increase the octane of the gasoline I use. That seemed to solve the problem initially. Now I am using 93 octane and can still here the problem. I have not taken it to the dealership yet. Can any one shed any light on this problem??
  • jeproxjeprox Posts: 466
    sounds strange. sienna have a sensor to prevent this pinging/knocking problem. they are supposed to be ok to run on regular unleaded.

    for myself, i use 91 octane or higher for my sienna - since day 1. in the owners manual, it says ok to run on regular but i believe it says that 91 or higher is better (recommended). i can't remember the exact wording on the manual.

    i always advice my friends to get 91 or higher. if you can afford to shell out over $20,000 for a new car - don't cheap-out on the type of fuel! this is my personal opinion.
  • dardson1dardson1 Posts: 696
    I've had many cars that would ping under load but never just crusing down the road. I, too, have an 01 Sienna....use premium, and have never heard a ping (10k miles). Although I know what it does I've no idea what a knock sensor is (perhaps a little black box that can break?) whatever ....maybe it's not working? Sounds like you need to visit the service department.
  • I've got a 2001 Sienna with about 4,000 miles. I noticed a problem shortly after buying it. Theres air coming into the van through the dashboard vents even though I've got the fan switch off. It blows in harder the faster the van travels. Is there a switch which closes the air intake? Thank you.
  • jeproxjeprox Posts: 466
    what you described is completely normal! it's called you got ventilation/circulation! u can turn this off by switching to "re-circulate" from "fresh air". when u switch to "re-circulate", you are basically re-circulating the air inside your van and not drawing in fresh air which you may find stuffy sometimes. doing this will also result in fogging up your windows in cold weather.

    the lever to switch from fresh to re-circulate is above your fan controls. u slide it left and right. if you are unsure, instructions are in your owners manual.

    normally, i find leaving it on fresh air is the best except when i'm using my a/c.
  • Like, take off! To the Great White North!HaHa!

    Seriously, thanks for the advise. Although I dont know if it'll work. I dont have a manual switch. I have a pushbutton set up which I believe is for the A.C. only. However, I'll try it in the morning!
  • jeproxjeprox Posts: 466
    if you have the push button type, you should still have one for fresh air and one for recirculate.

    i have not seen one japanese vehicle with no fresh and recirculate lever or button. on american cars, some have an actual lever for you at the vents to manually close them

    if everything fails, duct-tape your air vents!! :)
  • nygregnygreg Posts: 1,936
    many of today's cars have a button to "turn on" recirculate. This way after you shut the car off, it will automatically go to "Fresh air" next time. This is probably for those that don't understand that you need fresh air to help with fogged windows. Usually a button with a sideways "U".

    Greg
  • jeproxjeprox Posts: 466
    ok, i really don't know where to ask or post this so i'm doing it here. about 2 months ago, i started to notice i have these white dust particle things on my van every morning! i only see them in the morning! at first i thought they were just dust or some powder crap. when i looked closer, i can see these white particles move! yes, they move! i'm not kidding!

    no matter how many times i wash the van, next morning i would see them on the roof of my van! i look up on the ceiling of my garage and i can see no such thing so i'm really puzzled what these things are and where are they coming from.

    both cars in the garage have these pesky white things that moves! i know they are not ants or termites. u will only see them moving when u look up close. i look everywhere in my garage and i dont see them. they only appear on the cars!

    anyone seen this or heard of this?
  • fischdafischda Posts: 272
    What you have there are actually millions of tiny alien spacecraft surveying your Sienna. One day, when the mother ship comes down, you may enter your garage and find your Sienna gone. I won't even tell you the horrible things those aliens do to our cars when they abduct them!!
  • jeproxjeprox Posts: 466
    haha... funny.
    not laughing here. i just wanna get rid of these pesky white things.
  • steverstever YooperlandPosts: 40,144
    Sounds like a variety of aphid to me, even though they usually fall out of trees, not garage rafters. Do you guys have anything like our our county extension agents? - they usually have a "bug guy" on staff. Maybe you could order some lady bugs from a garden supply place and release them in the garage.

    Steve
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  • jeproxjeprox Posts: 466
    thanks for the suggestions. i dont have a clue about county extension agents! lady bugs? i kinda dont feel comfortable releasing any bugs anywhere in my house!

    these aphids you mentioned. are they dangerous or anything like that? do you know where they come from?
  • jeproxjeprox Posts: 466
    well, i just searched for aphids and i think this is what i have! i saw some pictures and looks very similar. they are white in color and really small! it says that these aphids normally are found on plants or trees.

    really dont get this, my van and car are both inside a garage, no trees or plants but these pesky things keeps coming back even after i wash the vehicles!
  • steverstever YooperlandPosts: 40,144
    They aren't dangerous (neither are lady bugs - they're pretty cute). Aphids love birch trees and they leave "nectar" all over everything. Turns your car black over a few days if you park under them. Why you have them in your garage I have no clue. Your search prolly turned up some ways to kill them off (Sevin maybe?). If you heat your garage, wait till a really cold snap, and turn the heat off - maybe you can freeze 'em out. Any entomologists out there who can clue us in?

    Steve
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  • How small are they? It may be a few Japanese assembly line workers who are putting the finishing touches on your Sienna. They aren't very big people you know.
  • jeproxjeprox Posts: 466
    very strange problem alright! i read that they dont do as well in cold weather so i'm hoping they will go away on their own. seems like the very next day i wash the van, i will see these white pesky things all over the roof and the sides!

    it's funny and frustrating at the same time coz everytime i wax the van - following day, i would see these bloody white stuff on the van!
  • steverstever YooperlandPosts: 40,144
    Maybe that's your problem - these are carnauba eating aphids and they're eating the new wax right off your van.

    Hey, it could happen :-)

    Steve
    Host
    Vans, SUVs and Aftermarket & Accessories Message Boards

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    Need help navigating? stever@edmunds.com - or send a private message by clicking on my name.

  • jeproxjeprox Posts: 466
    hmmm... you may have something there! carnauba eating aphids!

    i'll stop waxing my van and see what happens
  • I recently purchased a '98 Sienna from another person. When backing out of our driveway, we noticed the back brakes grinding to a halt. We had our mechanic replace the pads on the back with ceramic pads. Now when we put the van in reverse and apply the brakes, we hear a loud "thud" coming from the passenger-side rear wheel area. Has anyone else had a similar situation?
  • jeproxjeprox Posts: 466
    "grinding to a halt". can you elaborate on this?
    when you say "thud", is more like a click?

    reason i ask is because sienna's are known to have this certain sound when you apply your brakes when backing up. you will only hear this sound the first time u apply your brakes when backing up. when u back-up, the apply the brakes - you will hear this sound. back-up more and apply brakes, sound dont appear anymore! this is normal on sienna's.

    i suspect you are heard the same sound.
  • Thank you jeprox for the response. The "thud" sounds like you have just hit another car or a concrete post. It is very loud and much more than a "click". As mentioned, it sounds like it is coming from the passenger-side wheel area. I have backed out of my driveway 10+ times in a row and the same "thud" occurs. We have checked the underside of the car (as I thought maybe something not related to the brakes was shifting around) and have found nothing. It is a very frightening sound especially when you have small children around.
  • jeproxjeprox Posts: 466
    hmmm, if it's that loud then it's not normal! i wonder if it's from your parking brake. you didn't mention if you use your parking brake or not.

    if your parking brake cable is rusted or not lubricated well enough and you may hear this loud thud. when u release the parking brake, the shoes may still be engaged so when u move your vehicle - the brake shoes will release causing a loud "thud"!

    i've seen this happen on other cars with rusted parking brake cable or rusted springs/parts inside the drum.
    you can also try jacking up your rear wheels, support it with jack stands. rotate the wheels and hit the brakes and see if you get the same results.

    good luck.
  • nygregnygreg Posts: 1,936
    Are you sure the thud is not coming from the front? I have a thud caused by the disc brakes in the front shifting when I back up and then when going forward. This is the caliber shifting within it's cradle and is normal. If you back up and hit your brakes (thud sounds) and then back up again without going forward, does it thud again (it shouldn't)?

    Greg
  • nygregnygreg Posts: 1,936
    My automatic sliding door warning buzzer has appeared to stop working. This is the buzzer that sounds when the door is open and you place the shift in D or R. Anyone else have this happen?

    Thanks,
    Greg
  • 1) What is it recommended to run only 5W30 weight oil? Wouldn't this cause the engine to run a little warmer? Are the oil passages really that easy to clog? Living in a climate that get's up to 120 degrees in the summer, that seems a little too thin to me.

    2) Are there any differences in the older Sienna engines, compared to the 2001's? How about the rest of the drivetrain?

    3) What is the advantage of having the Sienna with the towing package if there is no hitch and no external transmission cooler other than the standard one in the radiator?

    Any answers would be greatly appreciated.
  • nygregnygreg Posts: 1,936
    A thinner oil will transport heat better. Usually it is a breakdown issue. Again here synthetic is better than dino. I would ask Toyota/local dealer their recommendations for you temperature.
    As for the tow package - it consists of a tranny cooler and modified cooling fan logic which will keep the fluid cooler thus helping with tranny life.

    Greg
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