97 LTD, hard to start when is warm

Hi,
My 97 LTD don't start itself when the motor is warm, I need to accelerate because the acceleration feels low. Somebody can tell me what to do?

Can you explain a bit better and a bit clearer? its hard to understand what your asking

The 4 runner works correctly but after one hour of use feels that the acceleration of the motor is low and if I turn off the motor and turn on again, the car can't start on because seems that it doesn't receive fuel and I need to push the accelerator pedal.
I hope this can be clearer.
Thanks

How many miles since your last tune up?

Around 5,000 miles from the last tune up.

Have you changed your fuel filter lately? What about your check engine light, is it on?

Yes, I alredy change the fuel filter, and the check engine light is off.

Well what I would try is after the engine is warm I would pull one of the plugs and have someone crank it over, look to see what kind of spark you are getting. If your getting a good spark then I would check your fuel pressure. If its good then I would check your tempeture sensor. Just process of elimination. Hope this helps.

many of these types of problems are usually related to the idle air control valve