On 10/08/2021 at 12:23, D.FYLAKTOS said:

 

Tar spray won't help?

That is worse as it will encapsulate any rust and make it propagate very fast 

 

 

Some guys use it.

 

No he is using oil based which is fine. 

Not tar based 

As far as the sika is concerned those products are for professionals and have to be applied properly 

Edited 10 September, 20213 yr by Thefeliciahacker

On 11/11/2009 at 11:11, TeflonTom said:

coolant temperature sensor.

common problem is coolant temperature sensor failing, sometimes manifests itself as making the car difficult to start when it's hot (especially on diesels), also may cause an erratic temperature guage. sensor can be removed by squeezing the spring clip to take off the plug, pull out a plastic retaining clip, then lever out the sensor with an old screwdriver or similar. you will loose some coolant in this process so be careful that you dont get scalded by hot coolant too. it is worth replacing the rubber o-ring at the same time and this is normally supplied with the sensor. essentially all it is pair of thermistors (resistor which is sensitive to heat) housed in the same unit, one part is for the temp guage, and the other is for the ecu

http://i86.photobucket.com/albums/k97/teflontom/coolantsensor.jpg

sensor location 1.6 petrol engine

http://i251.photobucket.com/albums/gg299/philje123/Nelly/P1000928.jpg

sensor location 1.3 spi engine... thanks to philje123 for this picture

http://i86.photobucket.com/albums/k97/teflontom/dieseltempsensor.jpg

sensor location 1.9 diesel engine... thanks to AndyIoW for this picture

pin-out (1.6 petrol)

1. goes to ecu (pin 42)

2. goes to dash loom for temperature guage in insrument cluster

3. earth for ecu sensor

4. earth for guage sensor

pin-out (1.9 diesel)

1. earth for ecu sensor

2. earth for guage

3. to ecu pin 3

4. to temperature guage

pin-out (1.3 spi and 1.3 mpi)

1. earth for ecu sensor

2. earth for guage sensor

3. to ecu (pin 53 on mpi, pin 42 via air temp sensor on spi)

4. to temp guage

if you have access to a multimeter, typically you should get around 300 ohms across the sensor when the engine is at normal operating temperature. and approx 4k ohms when cold...

if anybody has a pic of the location of the sensors on the others i'll add them on

Hi Tom.

Whats temperature sensor back inlet manifold and number wite on ecu ?

Have same resistance ohms that you describe  ?

Regards