Car starts but as soon as you put your foot on accelerator it clonks out.

The pedal position sensor is placed by the acceleration pedal under the dashboard if it is left hand driven where your left foot accelerates and if it is right hand driven where your right foot accelerates.

1. Transmission fluid level
2. Engine idling rpm
3. Accelerator pedal position (APP) sensor
4. Line pressure test AT-66, "Line Pressure Test"
5. Line pressure solenoid valve
6. Control valve assembly
7. Transmission control cable, if any.
8. Short circuit in wiring harness.

It's not a malfunction- this particular auto's idle rpm speed is low and it simply lacks the power to hold on the gradient of the slope- until of course you step on the accelerator pedal.

There is a very brief lag time from the moment your foot comes off the brake pedal to the time it reaches the accelerator pedal; such that by the time the torque converter is able to "perceive and respond' to your brake pedal to accelerator pedal movements, the car will- by the vary nature of gravitational force move in the direction it is being pulled until a force of equal or greater resistance is applied to either hold it in position or move it in the opposite direction.

By its very definition, a torque converter is a type of fluid coupling that is used to transfer rotating power (the engine) to a rotating driven load (the drive train)- that is the transmission, drive shaft, axle gears, and wheels that the tires are mounted on. [The transverse engine set-up is different than an in-line engine design, but the operating principles are basically the same]..

Automatic transmissions work on the same principle of a water wheel. As the current force of the water drops into the vanes of the wheel, it is converting that water force or pressure into useful forms of power as the wheel spins.

If the current flow of the water is so slow that the paddles of the water wheel are unable to detect any force, the wheel does not move- therefore no power-torque output.

Likewise, if the engine is idling too slow for the vanes in the torque converter to detect any push the transmission into power-torque output, then the car is going to freely go into the gravitational direction of the slope.

Have the oil pressure checked with a special test tool, you may have a defective oil pressure sending unit. If the pressure is low then you have other more serious problems and the truck should not be driven until the oil pressure issue is resolved, low pressure will destroy the engine if left unrepaired.

You have a belt slipping check belt tentioners a all pulleys then replace any that are stuck and the belt. That should fix the problem

A new fuel filter and maybe a complete tune-up would be a good place to start. Please rate this answer, thanks.

Will the car move at all. If you put it in gear and let your foot off brake , does it move untill you touch gas , or does it jam up as soon as wheels start to turn. I am suspecting problem with diff.
Doubtfull about trans filter.

it could be map sens 2 o2 sens best baet scannr codes

My gas petal used to stick on the jeep so i spray up in there on the petal to stop it from sticking ore the brake light woud stay on becuse petal got stuck try some WD40 just dont sray on your petal ok might work

braking shoes might have been rusted that is why you hear clonk clonk clonk