Is it possible to add a 3rd party temp sensor to a car's existing cooling system by connecting it to the thermostat housing? ?
I want to remove my car's mechanical fan and replace it with an electronic fan that will sit between the engine block and radiator. I was thinking of connecting the new thermo fan to the existing wiring, but that socket is being used by another fan that sits in front of the condenser and behind the front bumper. I was thinking maybe modifying the existing piping to the thermostat housing by placing a 3rd party temp sensor and then a pass through adapter to the existing piping. By doing so, I will improve MPG while improving throttle response by replacing the mechanical fan with an electronic fan. .
The vehicle is a 98 E46 323i BMW.
Anonymous2021-03-31T15:51:26Z
Everything you said is meaningless horseshit. Just go away and stay off.
The electric fan temp sensors are usually mounted on the brace or hardware that holds the fan in place behind the radiator. This measures the coolant temperature in the radiator and not the temperature of the coolant coming out of the engine block by the thermostat. If you did it your way, the fans would run non stop once the thermostat opened and run until the engine cooled off after parking it.
You are definitely not knowing more than BMW Research & Development guys when they designed this car(you definitely do not have the $ capital they have plus the numerous cars they have at their disposal. You have 1 car. . You want to mess with their system? Meaning you got to take to them to fix it right again. Beemer owners usually have lots of cash...because they is so costly. . Beemers are pigs on fuel. For more power you get lower MPG. Fan has nothing to do with the throttle response.
It is cheaper if you were doing it on "Buddies car" If it blows up or drives like a tank, it is not YOUR car. So you shrug your shoulders and leave...and go visit that Blonde chick.
I wouldn't modify a BMW. You're lucky the damn thing is running as it is. An electric radiator fan is not going to increase your MPG and I seriously doubt you'll have any better throttle response. Put a cat back exhaust system on the car. That will give you 25 more HP and maybe an extra mile per gallon.
just fix the mechanical fan you will get bugger all gains you aren't smarter than the BMW engineers the designed the car. the electrical system wont have a spare 40 amps to run the fan . if the engine is hot when you turn it off and the fan continues to spin its rooted.