Car Vibration and Loud Squeaking

[baz938]

I have a 1997 Eclipse GSX with an underdrive pulley and HKS intake. When i start it up in the cold It makes a loud squeaking noise but when i drive over 2000rpm it goes away/ Anyone know what it could be? and sometimes while im driving it feels as if the car is shaking/vibrating. Anyone know what the deal is?

 

[95blackGsTurbo]

Get your underdrive pulley checked out and look at all of your belts and check the tension on them. Even though underdrive pulley's seem like a good mod they present more problems then they help most of the times. If you have the stock one I would put that back on if it is still good and make sure your belts are all tight. Start with the alternator belt.