My 2001 nissan sentra won't accelerate what you think the problem might be?

You just go to the link I attached I'm sure you will get the solution of your problem NISSAN SENTRA SERVICE REPAIR MANUAL 2000 2001 2002 2003 2004 2005 2006

This link may be helpful.
Bob

https://www.google.com/url?sa=t&source=web&rct=j&ei=jVO4VK_hEMvbsAT83YDgCA&url=http://www.autopartswarehouse.com/shop_years/nissan-sentra-speed-sensor-2001.html&ved=0CDcQFjAA&usg=AFQjCNHmI3zYnmpPLAMrWGUYw4Hq3dw2tQ&sig2=NZHLkkBawd1OUJEZgAwLQQ

Seems like a cylinder ring is worn ;Big job

your ECM/ computer may be shot. those model sentras had campaign, where the ECM box would be lined with foam to hold the computer tight, but the fumes from the glue that Nissan used to hold the foam down, would eat the computer internally and destroy it. Nissan had us pull those foams out and discard. if you still have the foams inthere, good chances are that the ECM is fried, causing issues. Question: did you use aftermarket air filter in the air box?? or Nissan filter?? Let me know. very important to use Nissan filter it this car.

check fuel filter and emissions controls for leaks when was the last tuneup?

replace ur crank/cam sensors. without a proper signal form those ur car will turn over forever without starting.

Have you looked for vacume leaks at the intake gasket and all vacume lines also chek and test throtle pos. Sensor and idle air control on the throtle body

ok the fuel pressure is very good , and you replace maf sensor too,
i think 2 probable throubles, one , the catalyc converter clogged , to check remove exhaust pipe section before catalyc and run engine, its very loudness, other is tps fault, tps is throttle position sensor, located on acceleration body

The brake servo seems to have an internal pressure leak , have it replace.

very first thing i would try is a full tune up. This means the fuel filter , air filter, plugs and wires and possibly the coils. If this still does not fix it then try doing an emissions clean on it. What this does is it cleans out the intire fuel system and is very simple to do. Depending on the transmission on whether its a standard or automatic could be a bad tranny.