1991 Toyota Pickup Q&A

1991 Toyota Pickup Question: i have a idling problem it will go up and down from 15oo to 2000 and doesnt stop

i tried replacing the o2 censor and that didnt work. it will also shut off after being run for a long time and when i try to start it it seems like its flooding have any sugjestions? -
Answer 1
maybe you have a vacuum leak -
Comment 1
i already had all the hoses checked -