so u think its cuz it needs a tune up or fuel injectors or can it be from the trannny

 

Why would you think it is from the transmission? Does it slip or generally screw up shifts?
Use a can of seafoam and change your plugs (NGK PZFR5F-11) if you are over 100k miles and have never changed them (the stock plugs for 2000-2002 are double platinum &last 100k miles)

 

no it dosnt slip but as soon as it reashes hundred it start to de acccelerate by its self it has about 102000 miles i got it frm a dealership and it was normal then

 

It decelerates on its own huh. Tell ya what...I think this is all in your head. I have about 14K more miles than you, an older car, a rebuilt tranny and have zero problems reaching 100mph.

Do a tune up like AccordLX said. You don't need fuel injectors.