I have a 99 Plymouth Breeze and its has so many problems. First, I changed all 4 brake pads and one rotor. Now its makes a squealing sound everytime I step on the brakes. 2nd, as I was driving on the fwy, my speedometer was going down as usual. I know I was only driving like 40 mph but the guage read 60 mph! 3rd my car was making a weird noise and shaking a little bit so I took to the shop and the guy told me I need a new transmission which he said will cost me $800-$1000 bucks. What should I do?