problems with 2000 nissan maxima

the fuel econmy on my cars is not that great any suggestions.

Is your "check engine" light on? Sounds like a couple of different problems. How many miles? Has the transmission fluid ever been changed? Is it full?

If the service history is like described, 200kmiles, youre lucky if it starts...

- Change Filter(s) & plugs, mentioned A/T oil.

- Bad Throttle Pos Sensor TPS affects tranny & cold engine, possibly like described.

- IACV idle adj valve becomes dirty 'after 80kmiles', needs cleanup.

- Bad Mass AirFlow sensor MAF?

- After those, run self diag w a tester. For info follow link(s) below...

no check engine light. changed the transmission fluid was changed at 58,913 miles. The car currently had 63,173 miles. Also the OVERDRIVE comes up almost evert time i drive.

The car does run and is dependable but i know it has problems with the engine ect. i am willing to fix all problems. its a great car. aslo if u can recomend any auto shops that would be a great help. i went to my nissan dealer but they dont really help me out as much.

When you say "Also the OVERDRIVE comes up" what exactly do you mean? Does it start to flash?

Run diagnostics for Engine & Tranny. What error codes comes out?

Some say autozone does this free on some areas... But if u seriously want to be ont top of your vehicles service in the future, purchase a tester.

i have to change the cv boots in the front on boths sides. i can do it my self just woundering if i need a wheel aliment after ?

No, but the fact that you had to ask makes me think you might want to have someone else do them.

...if i need a wheel aliment after ? Toe in alignment is easy DIY task, see