if anyone can help please reply: Iam having an overheating problem on my 2000 ford focus ztec black top. While driving the temp goes all the way to the red area on the temp guage. I changed the thermostat housig but cant seem to find the coolant temp sensor. Others are saying this car dose not have a temp sensor,that it has a cylinder head sensor which is the same as the temp sensor. Does anyone know if this could be the problem and where this sensor could be located. I cant seem to solve this problem. I also check for proper circulation and it seems to be fine,added bran new coolant,maybe its the water pump,some oneplz help me. thanks neil.

 

The temperature sensor is between the middle two spark plugs (if it is the same as the 1.6 focus). Sounds to me like it could be a water pump issue.

 

It's only between the plugs if it's an SE, if it's a blacktop (By that you are saying it's a 1.8 or 2.0?) it's on the right side of the head, they are both NTC sensors and measure the temperature of the metal directly thus if you do decide to change there is no need to drain the coolant, in theory if it is thatI should think your fans will be on (As it uses the same info) as well as the all important input to the ECU for fuelling requirements.

An easy test is to disconnect the sensor and turn the ignition on, this should run the fans as it indicates a fault has been logged, once reconnected the fans should not run.

Are there any signs that it is actually overheating?

PS this thread really needs moving to either Technical Q&A or the Focus room.

Martin

 

moved by me for better response to your query.
Thanks