I have recently purchased this car from my grandmother. She had only put about 2,000 miles on it in the five years she owned it. I was told that it would sputter when driving it after the car heated up. I took the car to a Subaru garage, they replaced the transmission coolant sensor. I brought the car home and replaced my own plugs, wires and coil pack. The car now will not stay running. It stalls when the RPMs drop to idle. I have since replaced the TPS and this did not help. So today I cleaned the throttle body and it is still stalling, the car also has a new battery and all connections are tight and clean....
Please someone help I am very frusterated!