Hi All

I own fiat punto 1995 SX 75.
My problem is that the car is not reaching the normal working temperature.
The engine is always cold. I suspect that previously owner removed the water thermostat :bang:. I don't know where to look for him in the cooling system and how he look like, that's why i'm asking from u punto owners for a drawing or pictures of the cooling system and for the location of the thermostat.

Greetings L.A

I had the same thing on my 55, turned out to be the thermostat. The 75 is pretty much the same engine block as the 55 so the 'stat should be in the same place... If you follow the top hose of the radiator back to the engine block, the thermostat is the thing that the hose attaches to the thermostat and housing are one unit so you just unbolt the whole thing and replace it.

:yeahthat:

how can i check if the thermostat working properly without disassemble/replace him?

unfortunaly you cant really check it it unles you take it out. the only signs that its gone are that engine is staying to cold like yours (thermostat stuck open) or boiling up (thermostat stuck shut).

Lethal_Acid said:

how can i check if the thermostat working properly without disassemble/replace him?

Click to expand...

If your engine doesn't get up to temperature then the thermostat is the only thing that its likely to be (other than a faulty temperature gauge or sender, but thats very unlikely).

You could try starting your engine and letting it run for a while whilst keeping an eye on the temp gauge. If the temp gauge eventually rises to the middle point (might take up to 15 minutes if the engine is just idling) then the fault is with your thermostat.
The theory here is that when the car is moving, air is being forced through the radiator and it keeps the water cool. The thermostat is supposed to shut off the flow to the radiator when the engine is at or below the correct temperature. If you run the engine with the car standing still then there's no airflow through the radiator (until the temperature is high enough for the fan to start up - usually when the gauge reads a little above halfway up) and it should warm up after a few minutes even with a stuck-open thermostat.