start and will not keep up

[kevnor]

guys i have a 2001 rav4 1az engine it starts up but just shut down asme time i change the brain change the gas pump same problem can u help.

[typesix]

Could be temp sensor out of range and sending incorrect signal to computer. Cold start system may not be working and not making the engine fast idle. See if engine will keep running after start by giving just a little gas.