So had a new fuel filter put in today, not the fix to my issue. Guessing vacuum leak or MAF. Hoping not a crank shaft position sensor cause that sounds expensive. By loosing power I mean it will run perfectly fine most mornings but if the engine is warm and I go somewhere or after coming out of a store, it will drive and idle normal but after a few minutes the RPM will drop. If im sitting idle it will drop to around 200rpm "ballpark" and it stalled out once, then spike to 1500 for a second and plain out to normal. If im driving it will drop RPM also. Havent noticed a diffrence from passing rpm or just crusing speeds. The car will do this 3 to 4 times and then it will be fine for a while, then it will do another cycle of sputtering.
Any recomendations on a line and its location to check for a vacuum leak?