My toyota gaia has an engine check light on what is the problem

sounds like there could be several reasons why your Toyota Gaia with the 1AZ engine is experiencing acceleration issues. It could be related to fuel delivery, ignition, air intake, or even mechanical issues. Have you had a mechanic diagnose the problem yet?

Your MPV was made for the Japanese home market. We are in North America.

There could be hundreds of things wrong with it to cause that. The only way to diagnose is for an auto electrician to connect a profession grade scan tool computer and check for diagnostic trouble codes (DTCs). The most likely answer is that the catalytic converter is blocked and causing too much back pressure.

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If your Toyota Gaia with 1AZ engine starts but has no power, it could be due to several reasons. Here are some steps you can take to diagnose and resolve the issue:

1. Check the air filter - A dirty air filter can restrict airflow to the engine, causing a lack of power. Replace the air filter if it is dirty.
2. Check the spark plugs - Worn or fouled spark plugs can cause poor engine performance. Replace the spark plugs if necessary.
3. Check the fuel system - If the fuel system is clogged or not working properly, it can cause a lack of power. Have the fuel system inspected and cleaned if necessary.
4. Check the vacuum system - A vacuum leak can cause a loss of engine power. Have the vacuum system inspected and repaired if necessary.
5. Check the throttle body - If the throttle body is dirty or clogged, it can cause a lack of power. Clean or replace the throttle body as needed.
6. Check the exhaust system - A clogged or restricted exhaust system can cause a lack of power. Have the exhaust system inspected and repaired if necessary.
7. Check the transmission - A slipping or faulty transmission can cause a loss of power. Have the transmission inspected and repaired if necessary.

Change the transmissions filter inside the the tranny

no car stated (Gaia what? er Toyota )
2.0Liter told later
no transmission type, AUTO IT IS. NOT STICKSHIFT.

I guess dragging means delayed shift in the automatic>?

why not ask your autoshop this,.>?>?> as 99% do.

if any automatic fails to up shift the speed is low
speed low cause the speedometer to read low.
not upshifting can be cause by 2 things, weak engine or bad transmission.
you will never learn or discover why only your shop will. BUT I did answer below. and can expand each line by 100 fold if need be.
and more if the year car was told or what transmission model is there, some cars had 2 choice or more back then.

check if the water pump is working, both top and bottom rad hose's should be hot if is running ok. if one cold then probably the water pump not working, or possibly the thermostat

Engine control system fault in the brake system
To clear it fix the braking system
Repair or replace harness and connector
Or replace ecm

Could be a tank sender unit problem.

To your direct question - I am sorry, I have no information on this model. You may be able to download it from here, although I got no response

http://www.filestube.com/search.html?q=toyota+gaia+manual