I can't tell much from what you've described but it sure sounds like either a fuel filter or a failing fuel pump.
Nissan Altima
The Nissan blower motor can be found in the engine compartment on the firewall. The blower motor will be on the passenger side of the firewall.
yes the trans is the same in all 91-94 for the 1.6L motor
Medium grade
I can not find where is located the position of sensor crank of 1999 nissan sentra 2.0 ( in what point is located in the motor)
98 Nissan sentra only came with ga16de and sr20de, any ve motor would be considered a swap seeing that its a motor made strictly only in japan
I replaced the motor in my 1993 G20 with a motor from a Nissan Sentra from Japan.
They are generally found close to the blower motor.
On the back of the motor if it has a carb.
to the right of the gas peddal
10W-30
The starter motor on a 2001 Sentra SE 2.0L is at the back of the engine bolted to the transmission just above the driveshaft.