Possible reasons:
Fuel supply problems:
* Clogged fuel filter
* Faulty fuel pump
* Fuel leaks from the fuel system
Air supply problems:
* Clogged air filter
* Faulty air flow sensor
* Air leaks in the intake manifold
Electronics problems:
* Faulty crankshaft position sensor
*Faulty camshaft position sensor
*Wiring or ECU problems
Transmission problems:
* Clutch slipping of an automatic transmission (AT)
* Faulty automatic transmission solenoid
*Low transmission fluid level
How to fix:
1. Check the fuel system: Replace the fuel filter, check the fuel pump and inspect the system for leaks.
2. Check the air supply system: Replace the air filter, check the air flow sensor and inspect the intake manifold for leaks.
3. Check Electronics: Scan the vehicle for trouble codes. Check the crankshaft and camshaft position sensors and wiring.
4. Check transmission: Check transmission fluid level. If the automatic transmission clutch is slipping or there are problems with the solenoids, the automatic transmission may need to be repaired.
Recommendations:
* Carry out regular vehicle maintenance, including replacing fuel and air filters.
* Use good quality fuel.
* Diagnose and repair any vehicle problems immediately to prevent further damage.
*If you cannot fix the problem yourself, contact a qualified mechanic.