Cinquecento/Seicento Temperature Gauge Fitment

There are variations on how the cooling and monitoring is performed and also what sensors and potential sensor locations there are in the Cento range. By following this guide, the installation does not interfere with any other system, and is therefore generic across the model range.

To start you need you car quite level and be able to get under the front of the car. Jack it up on a slight slope to achieve this, make sure the car is secure and safe, as you will be working under it.



Once its jacked up, locate the lower radiator hose clamp, grab the hose clamp tightly, and give it a good twist and wiggle to break it, you will replace it with a jubilee clip once done.



Slacken/remove the header cap and bleed screws (varies between model), and then remove the lower radiator hose, with a bucket waiting underneath.

Heres the empty system, and filthy water that came out (only 5 year old car, and didn't look too bad when in the header tank)!





Now flush a hosepipe through the header tank till water runs clear through the radiator, back flush it through the header tank, this gets all the gunk and dirt out.

At this point you may want to do a full flush, if so remove the coil packs, thermostat (where the large pipe connects to the side of the engine) and then flush through the engine as well. This is particularly important if changing colour or coolant type. Refit a new gasket, and seal with gasket seal.

The hose adapter is fitted in line with the main engine coolant outlet, remove the hose and cut a section out to accommodate the adapter.





Fit the adapter between both hose sections, secure with clamps and screw in the sender wrapped in PTFE tape. Refit the adapted section back to the thermostat and radiator inlet, secured with new jubilee clips!





Now make sure all your pipes are secure and bleed screws are open. Fill the coolant header tank with mixed coolant until it runs from the bleed screws and then refit them and the header cap.

NB. After a run and cool down you may need to bleed air from the bleed screws and refill with a bit more coolant.