You may be pressing the gas pedal too hard
throttle plate stuck? I'm not sure. When I'm driving, I take my foot off the gas and the car jerks and when I have to stop and I push on the brakes the car revs and jerks forward and occasionally stalls
transmission is slipping
If your vehical is a tracker and you just put the timing chains in, it was done wrong
Car going wrong way
Either your gears are not locking at the start or you are in park or neutral or emergency brake on.
whats wrong if my car wont shift to the next gear automaticly when its driving
Sounds like the clutch disc is destroyed.
you probly stilll got the car in park or the gauge is acting up or probly its the transmission
Transmission slipping? Try having fluid and filter changed If that doesn't help may require a rebuild
The engine revs and car doesn't move.
There are several reasons why your car may be overheating. Check the thermostat to be sure it isn't stuck. If the car revs up and down, the timing may need to be adjusted.
EXCESS GAS IS BUILDING UP IN THE EXHUAST SYSTEM. ARE YOU USEING LOW GEAR WHEN THIS HAPPENS??? BECAUSE IF YOU ARE THATS WHY.