i have a 99 3.8 with 145k miles car runs like new looks new and still smells new lol but the the other day i cleaned out my throttle body and it was gummed up bad i ate to see what the internals look like. whats the best way to clean up the insides with out takin the engine apart. and do u think i should flush the transmission.

 

Clean the engine with Seafoam. Suck it up through a vacuum line, following the instructions on the can. You can get it at Walmart or any auto parts store.