Chirping sound coming from front end of atv?

I have a 1999 Yamaha Kodiak 4x4. When I accelerate I notice a loud chirping / squeaking sound coming from somewhere in the front end. I took both wheels off and cleaned out the gr and such inside the brakes, lubricated the driveshaft for the front wheels. I've also tried spraying some lubricant on the rotors and breaks to see if that helps and nothing works. When I apply the brakes the noise does not go away. When I slow down the noise slows down, when I speed up the noise speeds up. And I noticed it makes the chirp noise about 4 times for every time the tire makes one complete rotation. I just bought this used not too long ago and it's the first atv I've ever owned so I'm not really knowledgeable on this. I have also had the front end jacked up and the wheels do not wobble at all. I've also tried jacking the entire atv up front and back at the same time and have all 4 wheels turning off the ground and it does not chirp then. If I go a steady speed and accelerate quickly the noise goes away until there is more pressure on the front end. Does anyone know what I might be able to try to make this go away. Any help is greatly appreciated.