Check engine light came on and code is showing p2004 saying the intake manifold runner control stuck open bank 1. Explanation ECM has commanded the IMRC closed but detects it open. Probable cause short circuit condition, damaged IMRC actuator or solenoid, blocked vacuum hoses. The car is running great, and RPM's are normal.
Code p 2004 has two references
intake manifold air control actuator , bank 1 --actuator stuck open====causes ---wiring---intake manifold air control actuator ---mechanical fault
second reference is
intake manifold air control solenoid , bank 1 --solenoid stuck open===causes ---wiring--intake manifold air control solenoid ---mechanical fault
probably means the same as what you have but in a more easy to understand method
--2012
SOURCE: Car Idles Hot Temp
I don't know how the above could have any effect on temperature. Is the vehicle full of coolant? In my opinion you have two different issues
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