Car stalls at light, coolant engine fans stopped running, leaks antifreeze and theres hair burning smell when it gets warm.

check level of coolant and check for leaks and unless you wiped clean your engine after doing repair most possible is coolant residue burning off engine

More likely is you have low coolant levels. If you can smell it, it means it is probably leak somewhere. Check your coolant level. If it is low, I would look under the car for antifreeze somewhere on the engine or engine compartment. Most likely you will just need to replace a loose hose or a hose with a hole in it. It should be an easy and cheap fix.

you should first FIX the leak. if not enough coolant, the sensor won't activate the radiator fan, thus overheating occurs.

The anti-freeze smells like it burning because it is coming in contact with your brake pads (will contaminate pads and reduce life and increase stopping distance, exhaust system (most likely cause of burning smell), or some other hot spot on the the engine.

You should resolve this as it will cause over heating as the system can not properly pressurize and reduced coolant level.

it could easily be burning the antifreeze through a bad head gasket. if when warmed up the upper hose is quite stiff indicating the system is under pressureand you shut it off,even waiting until the radiator fan comes on and then right away turning of the key,wait and see iff anything runs out.the water pump would have to be looked at from below while the leak is ocuuring= reason must mechanics suffer a lot of burns. or with a sall extendable saft mirror. you could also loose antifreeze from a heater core leak but that would give a lot of steam on your windshield inside in the cold weather,or the carpet would be wet inside the car

blown head gasket. Your coolant is leaking into the combustion chambers and you are burning it. If you can still drive it you might want to try putting in K&W block sealer. Follow the directions carefully and this may prolong the inevetable. Need your heads inspected and new head gasket.

IF it is a Head gasket leaking into a cylinder you wouldent see smoke you would see white steam coming out the exhaust tail pipe and you should get temp creeping up as the further you go and by wrights you should be getting a missing in that cylinder as you cannot {run on coolant but you can on diesel}, but if you find its the coolant getting either in through the seal under lip on liner or head gasket leaking in coolant but will get a lot worse before getting better as only needs a hair crack to cause your problem..

When the engine is cool, check the fluid level in the radiator. If low add 50/50 solution of water and antifreeze. Do not continue to drive your car until this is fixed or you could cause a lot of damage to the engine.

Hi!

I really feel you could be losing a small amount of coolant from the heater matrix/core.

It appears we have an Air lock scenario due to this and you will need to perform a system Bleed.
Park the vehicle on level ground, when cold remove coolant filler cap, start engine and leave to idle, turn heater on full and blower to max. When engine reaches operating temperature watch and listen near coolant filler, keep clear as gurgling and hopefully a boil over should occur. Top up with very warm coolant and wait as it may do it again.
Check for heat inside vehicle if warm replace coolant cap but keep an eye on temperature gauge as the ~Air lock may have moved on from heater matrix/core so proceedure needs to be carried out again from COLD.
Also with your temp gauge reading 1/2 this is normal, possibly the core is blocked or as already suggested leaking, a Radiator sealing additive might help BUT it may be the cause of your cold/warm air?
TOO MUCH SEALER blocking the Matrix/Core?
I hope all this helps!


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the heater core is leaking.