So when my car is hot it seems to not wanna start right away. like it will turn on 1997 Oldsmobile Regency

over then just stall out any ideas on how to fix this issue maybe a o2 sensor or tps sensor? Also my heat only comes out of the top and bottom but wont come out of the middle. ive looked for broken vacuum lines and found nothing. Any ideas would be very helpful.

Asked by for the 1997 Oldsmobile Regency