[Romer]

I searched through all the other threads and couldn't find what I needed. The Drive to Nuetral Test provides some more data than what was in the posts

I have this whine that happens when I accelerate and get above 10 MPH and changes and also occurs as I decelerate. When I decelerate, it sounds like something winding down (changes tone). This is on my 97 LX450.

I just changed to OEM Belts. I tried loosening them and it had no effect.

I checked my lug nuts and they are tight.

All fluids are good.

We (Mabrodis, Ige and me) did a Front Axle rebuild 2 months ago. Also, change the Rotors and 100 series Pads. I checked and there is no seepage on the Ball.

I put Big Hose clamps on the CATs.

Today I tried a Test. While driving a constant speed down hill I shifted into Nuetral. The Engine RPM went from 2000 to 1000 fairly quickly. This also had no impact on the Whine.
I then repeated the test slowing down (2000 RPM to 1000 RPM) and this had no effect on the whine. The Whine seems to be more prone to wheel/vehicle speed rather than engine RPM.


If you guys could help me with the following questions:

1) The D to N test should have ruled out belts, bearings and associated pulley’s, right?
2) The D to N test should rule out the Power Steering Pump, right?
3) The D to N Test should rule out the exhaust, right?

In my mind this leaves the following:
1) Axle
2) Tire Issue (Balancing, etc) I’ll go have them balanced and rotated.
3) Driveline (U joints, other?)
4) Or could be vibration issue I am having with Slider (Probably not). I did (as posted in another thread) have the cardboard in the Slider gap and it does not vibrate anymore. It made this same noise before I used the cardboard.

Any other thoughts?

Thanks,
Ken