My car has always been quiet and all of a sudden everytime I pull up to a stop or even drive my car shakes and is loud. Even when I go up hill the acceleration is slow and shaky. I have check all my fluids, I know it's not my battery or alternator. I just had my radiator replace and now I don't know what is wrong. It is a 3.5L Chrysler Concorde. If anyone know this sounds or know how to fix it at a decent price will be SO HELPFUL. I am working two jobs, in school part time and am a full time single mother. Any tips to not having to fork out more money on my car is most helpful.

Is a check engine light on?....can you describe the shaky part.....is it like a miss in the engine?...or sort of vibration?,And loud from where ...engine/tailpipe? sorry....need a little more info to help.....just a shot in the dark,....has the car had any tune-ups lately...at least in the last 2 years, if not that would be a start one more question......did this trouble start right after the radiator was installed like the same day?