is the broken heat sensor the cause of the car to over heat?

Answer 1

no..a sensor is just a sensor..if it's broken,it may show as your car is overheating,but it's not.
If your car is really over heating,check for leaks in your radiator or change you thermostat.

Answer 2

Car Heat Sensor

Answer 3

A heat sensor can be one of three things on a vehicle
1. Temperature sender unit - this is the sensor that transmits a signal due to varying resistance to the actual gauge on the dash which then gives you and estimate of the temperature of the coolant in the engine

2. Temperature sender unit - radiator, this is the switch which again by varying the internal resistance supplies a votlage to the coolant fan so that when it reaches a specific temperature this fan is swithced on to drag air through the radiator to lower the temperature of the coolant.

3 Temerature sensor - engine management - this sensor monitirs the coolant temp so that the engine managment system can calculate ther throttla valve openine and also the injector opening pulse signal to allow variations on the fuel/air mixture to allow a rich mixture for cold starting and then gradually weaken the mixture off when the engine is warmed up
So to summerise yes a sensor can cause your vehicle to overheat if it is the one that controls the fan, it is possible to test this sensor but been so cheap (£4-10) a technician will sooner replace it.
If your vehicle is overheating check (when cold) that the coolant leve is as it should be and do a visual inspection for any coolant leaks, this can be seen as discolouration around hose joints etc if you cant see this you need to take your vehicle to have a cooling system pressure test where a pump is used to smiulate the operating pressure of the system this can show a leak from pipes radiator core pulgs etc also ask them to test the system pressure cap when they are doing this test it could something as simple as that. Dont expect it to be a worst case scenario of head gaskets, engines etc before you have had these tests completed

Answer 4

This Site Might Help You.

RE:
is the broken heat sensor the cause of the car to over heat?

Answer 5

Most likely yes. A broken heat sensor will not allow the proper amount of cooling water to flow into the engine.

You should replace it ASAP before blowing the cylinder head gasket.

Alternatively check the cooling water level on your car. (dont try this when the engine is hot)

Answer 6

There are many different reasons for overheating. Inadequate cooling is the first thing to check. Thermostat not functioning, obstruction on the radiator. Obstruction in the radiator. Low level of coolant or no coolant. Antifreeze has failed.

Engine problems are the next possibility. Oil has failed or is too low, worn or damaged moving parts inside the engine, cracked block, cracked or leaking manifold.

I could go on all day with a list of possibilities. Take the car to a repair shop and have a qualified mechanic check it out. Have the vehicle towed so you do not destroy the engine.

Answer 7

depends if the heat sensor that is broken is used to operate the thermo cut in for the fans, but without knowing which sensor on which car its hard to say

Answer 8

Thermostat stuck shut, fan not working, broken fan belt. If the heat sensor isn`t working maybe the coolant needs topping up.

Answer 9

There may be two heat sensors on your car one for the gage and one for the fan if your car has electric fan if the one for the fan is broke it will not come on and your car Will overheat

Answer 10

Also could be the temp sensor go get the car put on a diagnostic computer