As a continuation of the look into the effect of removing the seal at the back of the engine compartment, the temperature sensor is moved to a different location.
Test Procedure / Results:
The temperature sensor is moved to the fuel line that runs to the high-pressure fuel pump.
A routine drive is then made.
The air temperature at this location is similar to the temperature over the APR valve cover breather.
Next, the temperature sensor is located over the throttle body.
Another drive is recorded.
The average air temperature at this location is substantially lower than the other two locations.
The air temperature within the engine compartment when the vehicle is operating varies significantly by location.
Air temperature readings at locations separated by approximately 12 inches differed by 75 degrees Fahrenheit or more depending upon operating speed.