Technical Scicentro overheating

[Ernest]

Please can anybody advise where the cooling fan sensor is mounted on the
engine of a 2001 Fiat Seicento 1100? The fan does not appear to run and the car overheats. Have checked the 30A fuse is OK. Does the temperature sensor energise a relay to turn on the fan? I do not have a service manual.

Thanks in advance.

Regards

Ernest

 

[arc]

Hi

Does your car run Single Point Fuel Injection or Multi Point Fuel Injection?
An MPI has a big circular black airbox on top, where as the SPI has a grey plastic rectanglular airbox

This is a modded MPI:

http://homepages.nildram.co.uk/~delta666/images/Stanford Hall/pages/DSCN0597.html

You should be able to match up bits and pieces to check though. Namely, the fuel rail and the header tank bottle.

The SPI bay looks more like this:

http://homepages.nildram.co.uk/~delta666/images/Stanford Hall/pages/DSCN0596.html

Sorry the pictures arent the clearest for this kinda thing, but i dont have any others!

If it runs SPI, then the sensor is in the side of the radiator.

http://tackycheese.net/gallery/main.php?g2_view=core.ShowItem&g2_itemId=5725

It is the blue bit in that picture.

If your car is MPI, then the fan is controlled by a sensor else where. I beleive it is connected to the ECU, and the ECU handles the switching. Its a more complex system than the SPI and something im not familar with. sorry