Toyota 3c low acceleration and lack power - 1994 Toyota Previa

first tell what chokes mean. (it means 2 things so I ask)
2006 never got a full tune up on the engine in 16 years./?
uphills. power loss = chokes sure.but
for example, engine misfires violently felt and heard.???
or no misfire but lacks power just like dragging 2000lb dead weight.
we call that bogging, like walking in swap or bog.
bad spark loves to fail up hills (no new spark parts) due to higher combustion pressures.
bogging is caused by low fuel pressure, the filters is packed up
or air filter never changed out. again tune up parts.

the best ACT is get the car serviced in a real shop.
tell them it lacks power on hills , hot engine
the cold engine evidence told , hints at weak fuel pressure.
EFI FPR might be bad, fuel pressure Regulator, and more to find more takes tools you do not have,.

Question edited for clarity, name of maker.
Question moved to Toyota category.

Did you clean all the carbon build up from the inside of the Throttle Body.. It sounds like it is sticking. Also check the Air Filter.

https://www.google.com/search?q=Runx+160+lack+of+acceleration

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check oil pressure with a gage if okay then change the oil pressure switch. lack of power could be low fuel supply, poor TPS, exhaust partially plugged.

Your truck is in limp mode because your fuel mixture sensor is bad, I think that toyota has put this part back under warranty because of so many problems

check catalatic converter and engine timmeing

run the fault codes
indicates an idle control sensor or other throttle / accelerator sensors

sounds like fuel starvation or could be turbo if fitted

First thing I would check would be the fuel pump pressure,then go from there,but sounds like the fuel pump.

why their is a back pressure in water system what is the cause,when you accelerate ,the accelerator.he water comes out on the radiator filling valve?

did you have Diagram for 3TC-TE.now