i was wondering if anyone can help me out with some noises and shaking with my 99 vw jetta. everytime i would turn my car on it would make a screeching sound once its been turned. i have no idea what it is but it seems like its coming from the front, under the engine towards the exhaust. and also i just noticed that everytime i turn left the front left tires would shake also when i press the brakes. i tried tightening the bolts but its all tightened up so can anyone help me pls. would greatly appreciate it.