I've recently been having a problem with my car. They key turns fine. It'll turn to on and it'll turn to start but the car doesn't crank. Sometimes I have to press the key, after turning it to the start position, further into the ignition in order for it to turn on. However this doesn't always work. Lately it's been taking longer to start up. I don't know if this has anything to do with it but sometimes when my car is in motion or even just stopped somewhere the rpms will fall and rise inversely along with the turbo gauge. The car shudders with every movement of the rpms and turbo gauge. I really don't want to have to take her to the dealership since they charge an arm and a leg so any help would be greatly appreciated.