Car is stalling and not accelerating properly

SOURCE: car stalls after shifting into drive

ya need to have the code pulled,but sounds like a bad throttle position sensor

SOURCE: 2000 Toyota Sienna Stalls while driving

yes i would say to check the parts yourself and save some money the fuel filter should be located at the rear firewall of the engine there is a hose going into it and one coming out on the new one there is generally an arrow to show fuel direction spark plugs you will find easy enough ignition coil is on the side of the body it is a round thing with usually four wires going into it and a heavy wire coming out from the top check it after the car has been run for a while if it gets hot that could well be your problem also there is a resistor under neath it same with that the vacuum hoses are small (thin) rubber hoses check to see if they are cracked on the ends if they are then replace them the air sensor is probably on the end of the air intake the large metal/plastic scoop hope this helps regards Jim

SOURCE: Car stalls when accelerating

I would replace that tank (asap), so there can be a cap back on it.
With the cap off, the fuel system can't build up any pressure to hold the gas in the lines.

SOURCE: 99 Toyota Corolla multiple misfire problem

This is what you need to do, change the plug wires, because if there is a bad wire you would definitely experiences sputter or a stutter, so do the plug wires and at the same time do the spark plugs, this should take care of your problem. if not let me know and i will give you the next step

Testimonial: "So far the car is working fine after I replaced the spark plugs and wires! Thanks so much!"

SOURCE: My 1995 Previa check engine light goes on and off

My Previa was doing the exact same thing and it turned out to be a LOT of carbon deposits in the connecting passage between the throttle body and EGR valve. It just needed cleaning. That little passageway tends to get clogged on Previas a lot.