Could be as simple as a dirty/plugged fuel filter.
i please the engine is not running good and if you accelerate the engine is not accelerate and the code is p0171
If the vehicle has an electric fuel pump, then no, it runs no matter if the engine is running or not, but it will only run for a few seconds unless the engine is started. However if the pump is mechanical then the engine must be running for the pump to work.
because it is going uphill and the engine has to work harder?
The fuel pump pressure may vary by vehicle. However, on average the fuel pump pressure with the engine running should be between 4-6 psig.
Generally the check engine light will come on when the car is need of a tune up. It may run fine, however, the vehicle should still be inspected.
By running the engine on the vehicle or by connecting the battery to a 12 volt battery charger.
It can vary from vehicle to vehicle, but on most automatics the answer is yes.
The engine is overloaded in case it of generator set or any other load and in case of a car the vehicle is not engage in lower gear as per load and engine rpm.
A vehicles fluids must be maintained to keep the vehicle running well. The engine oil capacity for this vehicle is 1.0 Liter.
The alternator - it provides a charge to the battery while the engine is running.
Had a Jeep in the shop here with that problem last week and it turned out to be low fuel pressure. Try running a fuel pressure test. The Jeep would idle ok but when you tried to accelerate the engine would stall.
Depends. An older Diesel is likely to keep running. A modern, with a full set of electronic engine diagnostic might not.