My car is overheating and blows blue smoke when I go over 80 kms up hill. My coolant fan isn't working either. how much would it cost to fix it or is it even worth fixing?
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A blown head gasket or intake gasket does not always put coolant into the oil or produce smoke.. If the gasket blew between an oil vein and coolant vein then there is a possibility that your actually pushing the oil into the coolant side.. When the car is cool... look at your antifreeze and see if it has the oil slick look to it.. That being said it could be a head gasket or it could be in the intake as well..
Before you tackle the head gaskets I would check a couple other things first:
If you just replaced the thermostat and the water pump, that means that you've recently added coolant to the cooling system. I would check for air bubbles in the system by 'burping' it. In order to burb the system you need to open it up either at the radiator cap or at the bleeder valve. On a lot of cars you can find the bleeder valve by following the upper radiator hose to the thermostat. Slightly open the bleeder and squeeze the upper hose a few times to try and work out any air bubbles. You can also run the engine with the bleeder open or the cap off to try and circulate the coolant and allow any air to escape. Air bubbles in the system can cause overheating.
Another thing you can check are your fans. Run your car for a while at idle to allow it to heat up. When it gets to the point where it starting to overheat check your cooling fans to see if they're running. If they're not, chances are that the coolant temperature sensor has gone bad which is fairly inexpensive and easy to fix.
If it does end up being the head gaskets then yes, that would cost a lot of money to repair. Let's hope that's not it.
check coolant level, make sure car have half antifreeze and half water,if coolant level okay, car overheating when starting up driving is faulty thermostat and radiator cap.if car over heat while sitting in long line of traffic.your coolant temperature sensor could be faulty, or coolant fan fuse blowed or relay failed.hot wire cooling fan if it works, problem is the wiring or pcm, if every thing working okay.check engine oil if look like milk shake or you have a lot white heavy smoke coming out the exhaust, you have a blowed head gasket.
It depends on what color the smoke is. Ascending up a hill puts a heavy load on the engine, which may exhibit blow by if your piston rings are worn which is not noticed at other times. If the smoke is blue it is oil, if it is white it is coolant, black means rich condition. In either white/blue condition you want to have a mechanic look at it to perform a compression check on all cylinders.
If you have seen the signs of leakage around the water pump thn its worth replacing it being that far already.
Its better too, to flush the radiator.
Usually if the seal blows thts the end of the pump even if it looks ok!
fluid coming out of the vents indicates a faulty heater core, but this does not explain the overheating problem. The blown heater core may only be the result. Check the coolant level.Check for coolant leaks primarily at the water pump. Check the thermostat by insuring both hoses to and from the radiator warm up. Check for foamy oil or white smoke from the exhaust indicating a blown head gasket or cracked head. Check to ensure your cooling fan is working.
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