My 1999 camry has been having this issue lately. Whenever the AC is on, or just out of the blue sometimes, it acts like it wants to stall when given gas. it performs VERY poorly, and almost feels like its going to leave me stranded. Possible causes?

1. Spark plugs?
2. Fuel Filter?
3. Something more serious?

To my knowledge, my dad has never changed the spark plugs in the car. ever. same goes with fuel filter.

 

What engine model?