I have a whining noise on my 2007 toyota tundra v6. It happens all the time. What could this be?

Question edited for clarity.
Question moved to sub group.

Resets and Re-learns.

https://www.google.com/search?q=Reset+crank+shaft+position+sensor

And in relation to the Toyota Tundra

https://www.google.com/search?q=Toyota+Tundra%2C+Reset+crank+shaft+position+sensor

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Take to Autozone to test.

Mark, Complete instructions on how to oil and filter change link below.
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
DIY Oil Change pics 5 7L

how to change the oil on 2009 toyota tundra

Oil Filter Change Toyota Tundra 2007 2013 2007 Toyota Tundra 4 0L V6

hope this helps. southernelectronics.com

Here is what I have found out. I have an 2008 Toyota Tundra 5.7 4x4, and I changed the rear brakes and rotors. No noise prior to service. After installing new rotors, I started getting a metal scraping noise. After $300.00 in diagnostics, I found that the new rotors are rubbing the against the brake shield. The inner lip of the rotor needs to be machined down to avoid this rubbing. See toyota tundra forum.com for pics.

Both the V6 an V8 engines have a timing belt.
Most companies recommend replacement at 60,000 to 80,000 miles.

Installing fanbelt on 2007 Toyota Tundra 5.7

FRT OR REAR.. IF DISC. REMOVE CALIPER BOLTS. EMOVE CALIPER REEPLACE PADS. MAKE SURE YOU USE BRAKE QUITE BEFORE INSTALLING PADS.. PREVENTS PAD NOISE

For your 2000 Toyota Tundra: I do not know if you have the 3.4L DOHC V6 or the 4.7L DOHC V8.

Click on the following free, direct Link. It has all the Timing Belt Diagrams you will need, complete with Instructional and Directional Diagrams to set your Timing.

Let me know if this helped or if you have additional information or questions. Feel Free to contact me at FixYa.com!

http://www.2carpros.com/car_repair_information/year/2000/make/toyota/model/tundra/2000_toyota_tundra_timing_belt_diagram_marks.htm

The "noise" is coming from the alternator and is being injected into all powered accessories. Some devices are better at filtering than others.

Best way to eliminate the noise in your audio system is to add a low-pass filter (aka choke filter) on the input power wire to the audio system (red wire?). That will "pass" the noise to ground.

Since the whine is in the 800-5000 cycles per minute, like the engine rpm, you will need a low-pass filter around 5000x60 = 30KHz.

A decent car audio shop can install the proper ampere and frequency filter.