truck starts and runs great til it warms up why would it do this?

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i just replaced the tps iat map and engine coolant sensors on it and did a complete tune up including oil oil filter plugs plug wires air filter thermostat and belt my truck starts and runs great until it warms up then it coughs and spudders and wants to to die and wont idle i have put the code reader tool on it and it comes back with no codes