I have a code that's been on for months with no issues P1494 leak-detection pump error code(don't think this is my issue. A Week ago I started to have a misfire type of symptom around 9am low power when coming to a stop or pushing the clutch in. 2Pm that day the timing belt teeth were missing. Belt died i believe at starting the car. Well i fixed the belt and the issue seem to be worse. Car starts up just fine but when i start driving it then coming to a stop or push clutch in as I'm coming to a stop rpm drop to 200rpm then fast builds its way back to normal rpm or it stalls. I'm pretty good with mechanical issues and never had a issue like this so I'm kind of unaware of how to fix it. Thanks

 

might help to list year/engine ect