2002 ford focus

Idk for sure but I think it's a worn down or collapsed vacuumed hose it runs great but every once in a while it dies when not haven foot on gas it does not have engine light on I fixed all the issues when I got it new mass flow sensor 100$ new tires all way around 400$ new co2 sensor 60 new cam sensor30$ New plugs and wires 50$ 157k miles I love my car all lights and everything work I just am sick of putting money into it I found.d a car o want to buy so need to sell this one to have the rest I need to get it