strange little problem with my 2002 1.2 Punto Go...
Everything is fine on shorter trips, but on a longer journey after about 30 minutes (25 miles) suddenly the temperature gauge drops to zero and the amber engine light comes on.
After stopping for a while, the temp. gauge will work again but the engine light stays on for the rest of the day. Next morning, engine light will be out, temp. gauge will be working - until I drive for half an hour when it starts all over again.
There doesn't seem to be any air in the cooling system, and all the pipes are hot, could it be the thermostat not closing? but why would it work for 30 minutes and only then stick open?
Not sure if it could be related, but I previously noticed that on this car the temperature gauge has always read a bit low - it never really goes over halfway even when stuck in traffic.
Everything is fine on shorter trips, but on a longer journey after about 30 minutes (25 miles) suddenly the temperature gauge drops to zero and the amber engine light comes on.
After stopping for a while, the temp. gauge will work again but the engine light stays on for the rest of the day. Next morning, engine light will be out, temp. gauge will be working - until I drive for half an hour when it starts all over again.
There doesn't seem to be any air in the cooling system, and all the pipes are hot, could it be the thermostat not closing? but why would it work for 30 minutes and only then stick open?
Not sure if it could be related, but I previously noticed that on this car the temperature gauge has always read a bit low - it never really goes over halfway even when stuck in traffic.