Im having problems with my car.. first problem is my car all of a sudden has a weird idle kinda like high and low and i believe it has lost some power.... i 2wks ago changed to bosch plat plugs and bosch wires i dunno what the problem is... and second problem is i hear like a weird screeching noise from my car dunno yet where its coming from... and also now dunno whats up with my brakes but i have to push the pedal to the floor to get the car to stop and sometimes pump it.. any answers to any of my probs will be appreciated thanks guys...