Engine may overheat

[kriegheim]

Engine : C20NE

The engine getting warmer and warmer when its standing still. It goes around 100-103 degres, and the fan is not kicking in. I dont know when it should kick inn, but i think around 95 degres?

I checked the fuse ( it is 4 or 24 or 26 ) a 10 amp fuse.

Now, i thinking about the thermosensor, but i have two. One is blue, and the other is brown. Which of theese are the thermoswitch?

Can i jump the connector with a fuse or a wire to check if the fan is working?

[planetc]

Engine : C20NE

The engine getting warmer and warmer when its standing still. It goes around 100-103 degres, and the fan is not kicking in. I dont know when it should kick inn, but i think around 95 degres?

I checked the fuse ( it is 4 or 24 or 26 ) a 10 amp fuse.

Now, i thinking about the thermosensor, but i have two. One is blue, and the other is brown. Which of theese are the thermoswitch?

Can i jump the connector with a fuse or a wire to check if the fan is working?

should kick in at approx 102 degrees. You can bridge the fan switch to test the circuit, it's the bottom one in that picture

[kriegheim]

Engine : C20NE

The engine getting warmer and warmer when its standing still. It goes around 100-103 degres, and the fan is not kicking in. I dont know when it should kick inn, but i think around 95 degres?

I checked the fuse ( it is 4 or 24 or 26 ) a 10 amp fuse.

Now, i thinking about the thermosensor, but i have two. One is blue, and the other is brown. Which of theese are the thermoswitch?

Can i jump the connector with a fuse or a wire to check if the fan is working?

should kick in at approx 102 degrees. You can bridge the fan switch to test the circuit, it's the bottom one in that picture

When you say bridge the swith, you mean jump the connector for the switch with a wire?

Off topic, the top switch, was is it for?

[planetc]

Engine : C20NE

The engine getting warmer and warmer when its standing still. It goes around 100-103 degres, and the fan is not kicking in. I dont know when it should kick inn, but i think around 95 degres?

I checked the fuse ( it is 4 or 24 or 26 ) a 10 amp fuse.

Now, i thinking about the thermosensor, but i have two. One is blue, and the other is brown. Which of theese are the thermoswitch?

Can i jump the connector with a fuse or a wire to check if the fan is working?

should kick in at approx 102 degrees. You can bridge the fan switch to test the circuit, it's the bottom one in that picture

When you say bridge the swith, you mean jump the connector for the switch with a wire?

Off topic, the top switch, was is it for?

yes, bridge with a wire. tbh I can't remember what the other switch is for, possibly AC, but someone else will prob chime in

[kriegheim]

Done deal.

Bridged it, and the fan is blowing. Got a 3 pin connector, this means that this is a to speed fan, or i am wrong?

[planetc]

Yes, two speed. I would be a little braver and let the gauge go up a little more before you junk the switch, as I said the fan should kick in at about 102, but if the gauge is slightly low you won't have got hot enough.

[kriegheim]

Yes, two speed. I would be a little braver and let the gauge go up a little more before you junk the switch, as I said the fan should kick in at about 102, but if the gauge is slightly low you won't have got hot enough.

The switch is 30£ in norway.

When it is a two speed fan, it should start lower than 102? The red mark is at 105 i think?

[planetc]

Good point, yes I think you are correct, speed one is around 98 from memory. If it is that close to the red then a new switch is the best option.

[kriegheim]

New switch obtained.

But how much antifreeze do the radiator contain? I think it will pour out when i take off the old one. The antifreeze was changed only a year ago, so i need a pan and to contain it. think i am going to re use the antifreeze.

[planetc]

New switch obtained.

But how much antifreeze do the radiator contain? I think it will pour out when i take off the old one. The antifreeze was changed only a year ago, so i need a pan and to contain it. think i am going to re use the antifreeze.

If you reuse then no need to worry too much. In my workshop days we used to put approximately 1.5 to 2 litres in when refilling. I guess that you have much colder temperatures in Norway than we do in the UK though? Best action would be to buy an antifreeze tester that measures the freezing point of the coolant for you.

[kriegheim]

New switch obtained.

But how much antifreeze do the radiator contain? I think it will pour out when i take off the old one. The antifreeze was changed only a year ago, so i need a pan and to contain it. think i am going to re use the antifreeze.

If you reuse then no need to worry too much. In my workshop days we used to put approximately 1.5 to 2 litres in when refilling. I guess that you have much colder temperatures in Norway than we do in the UK though? Best action would be to buy an antifreeze tester that measures the freezing point of the coolant for you.

Got it sorted out.

2-3 dl that went in a used washer fluid tank that i cut up. I was pretty fast when i changed it. Did the trick.

The old switch was all green, a hard green coating on it, so maybe that was the reason it didnt work. The fan now kicks in at 100 degrees, and is working fine.

Thanks for help

[planetc]

You are welcome.

[carlos_canter]

Glad you got it sorted,

Had problems with my fan not kicking in recently, changed the switch and then the fan seized up.

2.0 take 7.2 litres of coolant, if your in a cold climate or overly cautious (like me) its ok to do a 50% mix, 3.6 litres of water to 3.6 litres of anti-freeze.

[kriegheim]

Glad you got it sorted,

Had problems with my fan not kicking in recently, changed the switch and then the fan seized up.

2.0 take 7.2 litres of coolant, if your in a cold climate or overly cautious (like me) its ok to do a 50% mix, 3.6 litres of water to 3.6 litres of anti-freeze.

The antifreeze were changed a year ago. Its pretty cold here, last winter it was around -30 degrees for 3 or 4 weeks. Good clothing needed

[kriegheim]

Well. Thinking i have a oil cooling problem now.

I switched off the ignition now, and let it sit for a couple of minutes, the needle did get up, not the whole way to the red, but over 100 degrees.

I started it, and the oil lamp went on an off, and blinking. Maybe bad oil pressure, that lead its to get hot? I see the exhaust manifold has turned white.

[kriegheim]

Nah, not an oil problem works fine.

Changed the temperature switch, and now it sits around 100 degrees on normal driving. Before i changed it it sat on 95.

The fan now kicks in excactly on the the start on the red, before it started a little bit earlier.

Well, The thermostat works fine, around 92-93 degrees the hose from the thermostat housing begins to warm up ( not before that ) and i take a minute or two before the other hose is warm.

I see that that there is no change in the expansion tank, it stays the same regardless of the engine is hot or not. If i squise any of the hoses ( when its cold ) there are coming in the expansion tank, took a couple off good squiezes and there came som air bubbles in the tank, but i thought the air should go away off it self? No need to ventilate the system?


Any tips or thoughts? The water pump was changed at 170 000 km, its now 196 000. This is the last type C20ne, maybe the wrong water pump was fitted? They have different toothing.

[planetc]

Sounds like the original temp sensor was more accurate, thermostat usually opens at approximately 92-94, fan at approximately 102. Gauges and sensors will vary. No need to bleed the system, fill it, run with the cap off until the thermostat opens and then replace the cap. It should then be good to go. If you fit the wrong pump they don't last long before the belt shreds, but it won't affect the function until it fails.

[kriegheim]

Sounds like the original temp sensor was more accurate, thermostat usually opens at approximately 92-94, fan at approximately 102. Gauges and sensors will vary. No need to bleed the system, fill it, run with the cap off until the thermostat opens and then replace the cap. It should then be good to go. If you fit the wrong pump they don't last long before the belt shreds, but it won't affect the function until it fails.

Ok.

The hose that goes all the way from the radiator to the expansion tank is just warm half the way. ( the small one, that goes along with the front ) When it gets to the air filter clamp, it goes cold. Shouldt it be warm all the way? If it cant return any water, then it will run hot?

Thinking i take it off, and flush it.

[kriegheim]

Nah, took the lid of, and let it run, but no change.

I saw that one of the hose that goes to the expansion tank is somewhat broken, if i wiggle it a bit,there is coming air and water out off it. Not much, couple of drops, but somethings off. Looks like the plastic pipe that goes out is broken off.

[planetc]

Sounds like the original temp sensor was more accurate, thermostat usually opens at approximately 92-94, fan at approximately 102. Gauges and sensors will vary. No need to bleed the system, fill it, run with the cap off until the thermostat opens and then replace the cap. It should then be good to go. If you fit the wrong pump they don't last long before the belt shreds, but it won't affect the function until it fails.

Ok.

The hose that goes all the way from the radiator to the expansion tank is just warm half the way. ( the small one, that goes along with the front ) When it gets to the air filter clamp, it goes cold. Shouldt it be warm all the way? If it cant return any water, then it will run hot?

Thinking i take it off, and flush it.

No harm checking it's clear, but not much goes through that one unless it is really hot.