98 Expedition 5.4
There is a hose that comes off the return line pipe that runs from the heater core to the back of the water pump.
See where the yellow arrow is.
It goes into a the back of a 3 way fitting on the side of the throttle body
The hose that comes off the side of that fitting goes to the PCV system and the hose that comes off the front of that fitting goes to a nipple on the fitting at the front of the intake. What is this sensor?
I am not understanding how coolant is not getting sucked into the intake system, assuming that 3 way on the side of the throttle body is part of the intake system.
There is a hose that comes off the return line pipe that runs from the heater core to the back of the water pump.
See where the yellow arrow is.
It goes into a the back of a 3 way fitting on the side of the throttle body
The hose that comes off the side of that fitting goes to the PCV system and the hose that comes off the front of that fitting goes to a nipple on the fitting at the front of the intake. What is this sensor?
I am not understanding how coolant is not getting sucked into the intake system, assuming that 3 way on the side of the throttle body is part of the intake system.