Wiktionary(0.00 / 0 votes)Rate this definition: 1  smudge(Noun) A blemish; a smear. 2  smudge(Noun) Dense smoke, such as that used for fumigation. 3  smudge(Verb) To obscure by blurring; to smear. 4  smudge(Verb) To soil or smear with dirt. 5  smudge.
This smell might mean that your coolant is leaking from somewhere like a radiator or heater hose. This kind of a problem means it's a good idea to take your car into a professional. If you smell maple syrup outside the car, this might mean that you have a leaking radiator cap or that the radiator itself has a leak.
Follow the upper radiator hose to the thermostat housing and the temperature sensor is right there on top and the coolant temperature for the gauge inside the car is right bel â¦ ow the housing. Answer     Located on the bottom left side of the radiator, next to the lower hose.   Answer     There are several sensors on the 1.5 liter. The eng â¦ ine coolant temperature sensor you're referring to (I think) is located in the intake manifold, at the left hand side of the head.