the first problem im having is the manumatic mode is not working
and the second problem im having is the car is having problem downshifting
and help would be gladly appreciated thanks

 

Your auto does not shift by hand? Check the magnetic/ellectric mechanism under the shift lever panel.
About downshifting, replacing fluid - the first thing you can do. Also there is such thing called kickdown switch, might be deffective.
Go to Autozone and get your fault codes. Also having a bentley (not factory) repair manual might help

 

i went to advance to check the code and they said it was the maf sensor so im going to try to replace that thanks

 

clean it first, check it's connections. it's quiet expensive.