hey can any1 help my punto engine is overheating its a 1.1 before i go get a new head gasket i wanted to know if any1 has experianced theses problems not ur normal 1s lol heaters still work with thermostat out colling fan dose not seam to work but have checked the switches so bridged it with a wire n the fan works could it be the radiator thermostat?
Technical cooling fan not kicking in
- Thread starter bigjohnmc
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Technical cooling fan not kicking in
davy_b
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Just to confirm, you are saying the that the Fan works when you radiator thermonstat and you are getting internal hot air OK. It could certainly be a faulty thermostat, or maybe an air lock inthe system.
The fan has a thermo swicth that controls the fan.. (it's the big brass screw in the back of the radiator case, with electric plug leading to it) but before you change it make sure that there's no air in the radiator.
There's a bleed screw under the o/s headlamp. Top up the header tank and then unscrew the bleed screw a bit until water comes out. Don't take it out completely or you'll never get it back in (no space for hands, though you can unbolt the carbon canister thing, to give more space).
Once the rad' is bled, there should be nothing to stop the fan thermo-switch from reacting to the temperature of the coolant (rather than air) in the radiator. Take the beast for a gentle run to warm it up, then let it idle until the fan comes on, or until the temp. gauge reaches 3/4. If if doesn't come on then, the chances are the thermo-switch isn't tripping the fan on when it should.
I think you have air in the rad' though.. if it overheats when you're just driving along. If it only overheats when you're stuck in traffic (i.e. the fan just doesn't cut in) then that's better, as that could be just the switch (or maybe the thermostat on the block jammed shut).
If you keep getting air in the rad, it could be the head gasket.
Ralf S.
There's a bleed screw under the o/s headlamp. Top up the header tank and then unscrew the bleed screw a bit until water comes out. Don't take it out completely or you'll never get it back in (no space for hands, though you can unbolt the carbon canister thing, to give more space).
Once the rad' is bled, there should be nothing to stop the fan thermo-switch from reacting to the temperature of the coolant (rather than air) in the radiator. Take the beast for a gentle run to warm it up, then let it idle until the fan comes on, or until the temp. gauge reaches 3/4. If if doesn't come on then, the chances are the thermo-switch isn't tripping the fan on when it should.
I think you have air in the rad' though.. if it overheats when you're just driving along. If it only overheats when you're stuck in traffic (i.e. the fan just doesn't cut in) then that's better, as that could be just the switch (or maybe the thermostat on the block jammed shut).
If you keep getting air in the rad, it could be the head gasket.
Ralf S.
thanks for the input just put a new thermostat in it still the same will put a new radiator themosta on it 2morrow cheers
cheersm8 the car has been bled properly ive had to do it a few times b4 never had any problems (there not as bad as my landrover freelander b"£$%$d ksieries engins) i think it my well be the thermo switch thats faulty its a second hand engine ive put in it dosent5 loose any water and the main thermostat is brand new think it may be the head gasket tho unfortunatly if it is ill just replace it tomomorrow tho will keep u posted
