Whistling Noise In Engine

[vrbango]

I have a 2005 4Runner with 14,750 miles - I love my SUV but am having some problems with a whistling noise coming from the engine while driving between 30 and 45 MPH.

The dealer where I purchased the vehicle last year and am having it serviced, has confirmed that the noise exists. It sounds like the power steering fluid is low, but its not.

They have so far replaced the front differential in February 06 and the transer case in March 06 - but the noise is still there and can be heard while driving between 30 and 35 MPH.

Anyone else having this problem - any suggestions?

Thanks!

 

[Mr. Lambdebois]

Hard to say without seeing it in person. They are certainly trying to fix it. It is suprising to me that they would change out two different esspensive parts and not have isolated the problem. I am sure the tech is as frustrated as you are after the time he has put in it.
My advice.... be glad they are working with you and not saying "oh thats normal" or something.


They should have a tool that simplyfied it is a headset that plugs into a box with a dial. There are several pickups for sound that come off individual wires out of the box. The tech takes these and places them in suspicious areas under the vehicle being very carefull to route them away from rotating parts back up to the box with the dial. The vehicle is then driven to reproduce the noise and as the dial is turned the different mics turn on in the different places making the noise get real load if it is close to the one that is on.

It is time consuming but is a great tool. I just wish I could remember what it is called as I have been out of the field for a little bit. The service advicer may not know what it is but give my description to one of their senior master techs and he should at least know what it is and if they don't have one should be able to get one from toyota or another dealor should have one.

Another great tool is the EVA but that won't help you and is for a different subject.....