[nickx271x]

Hey my corolla runs fine when cold but when it gets hot it begins to lose power intill it gets to a high rpm. no idea what it could be, any suggestions?

 

[kaitaiya]

check to see if your fans are turning on, and your cooling system is working properly(thermostat, correct antifreeze to water ratio etc). i'm assuming you have a 4afe not a carbed car. sounds like the car is seeing the overheating condition and adjusting to save the motor.

 

[gold94corolla]

I found this to be normal for my rolla, that it was just slower when hot outside, but way quicker when slow. That's why I developed the cold air intake for the summer.

 

[REN69]

^quicker when "cold" you mean? lol

I'd say maybe something to do with the catalytic converter