Question about 2003 Toyota Sienna

1 Answer

High pitched whine/whistle on startup - 2003 Toyota Sienna

Replaced the alternator because it checked out bad, but initial whine/whistle is still present on startup; seems to fade out somewhat after engine warms up but still can be heard

Posted by on

  • Anonymous Dec 28, 2008

    When I turn my key to on, without starting the car (just giving the electronics power) there is a very high pitched sound coming from somewhere under my trunk. It sounds like it is coming from the center of my engine, but the engine is not running. When I push down on the gas pedal (again without the engine running) the sound changes a little bit and when I let off the gas it gets quiet for a second. The sound does not start until the gas pedal is pushed down and then it does not stop until I take my keys out.

  • Anonymous Mar 12, 2014

    when my toyota sienna 2011 is cold the heat motor whistle

×

1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I have the same problem like yours but what i did is to replace the alternator and now its so quite no more high pitched sound. You may used belt stress fluid but its only last for few seconds then sound comes again. I replaced it with refurbish part alternator.My sienna 2005.

Posted on Feb 04, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

High Pitched Whine


A high pitched whine like that indicates a bad bearing. Water pump, power steering pump, accessory belt slipping, alternator bearing, or in the worst case scenerio, Transmission pump.

Dec 12, 2013 | 2001 GMC Yukon XL

2 Answers

Whining noise on 2002 chevy tracker, comes and goes


Could be your alternator or a bad idler pulley. Is the transmission good? It may be the tranny or your differential whining.

Feb 18, 2013 | 2002 Chevrolet Tracker

1 Answer

1985 toyota mr2 engine noise


It still could be the throw-out bearing. When going bad, they have a high pitched whine or whistling, and if bad enough, could imitate a vibrating sensation. IDK, I would have a mechanic there listen to it.

Jul 12, 2012 | Toyota MR2 Cars & Trucks

1 Answer

Continued battery drain and high pitched noise when car started


Maybe the alternator is bad. A high pitched whine could mean that the alternator is not working properly.

One can test, by removing the belt to the alternator and running the engine and seeing if the whine goes away.

Jan 16, 2011 | 2000 Toyota ECHO

1 Answer

The 'Battery' dashboard warning light has come on. What are the possible causes of this...bad battery, alternator, belt? 2003 Toyota Sienna


usually this indicates that the alternator is not charging you need to check the charge rate either with DC volt meter or a multi meter that is capable of DC voltage reading, the voltage when the engine is running should be between 13.8 & 14.3 volts if it is not the alternator or the voltage regulator is faulty,also check for loose wiring or bad connections.....hope this helps.....cheers

Jul 26, 2010 | 2003 Toyota Sienna

1 Answer

Whine from 2005 corolla automatic transmission


Have the tranny serviced with fluid change and filter, if noise it still there it is the torque converter . Have the dealer fix it ,and have it on paper with dealer invoice when it is done. Do all this before warranty expires. IT IS NOT USUAL for any car, Toyota included, to have tranny whine!!!!!

Jan 23, 2010 | 2003 Toyota Sienna

1 Answer

Constant high pitched whining noise. Increases


you could be low on transmission fluid check that and make sure it registering properly on the dipstick.

Oct 20, 2009 | 2003 Toyota Sienna

2 Answers

High Pitch whine during acceleration


Hi Pullerwife,

I have a few suggestions for you,

First of all, check your air filter, make sure its clean, not clogged, and doesn't need to be changed.

I don't know how handy you are, but if you are fairly handy, check the idler pulley bearings, if your not, have a shop check it out, as a last resort.

Power steering pump/fluid being low is also a possibility, but thats usually more of a lower pitched whine then what you describe.

You say once the vehicle is warmed up, the whining stops. Does Weather seem to be a factor as well?

Hope I've helped, and don't forget to rate.

Lazaruselite

Feb 25, 2009 | 2005 Chrysler Town & Country

5 Answers

High Pitch whine during acceleration


well it could be a few things but most likely you belt is sliping. That is very common and happens to all cars over the years if the belt is not changed. You should check it out. The belt could be bad but it could also be a bad pully. If you dont know what these parts are look them up on google. its very simple

Oct 23, 2008 | 2006 Pontiac Grand Prix

Not finding what you are looking for?
2003 Toyota Sienna Logo

1,016 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toyota Experts

yadayada
yadayada

Level 3 Expert

61037 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6812 Answers

Are you a Toyota Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...