Recently my car began to lose coolant, and the light would come on. I would add water, but that would only temporarily fix the problem. About three days ago my car superheated (buried the needle in the red) and adding water did nothing. I replaced my thermostat (they come with new housings as well) and this fixed the overheating. However, my coolant is still leaking.
I have checked all the hoses, and none of them show serious signs of wear. I have tightened my clamps, everything. I notice that some coolant appears on the block (right where the top part of the thermostat connects to it), so I removed the housing and put a gel gasket on it (Ultra Black). However, I am still noticing a puddling in this area. To make matters worse, my coolant is burning on my engine, so everytime I drive it, smoke pores out of the area. I'm not entirely sure where the smoke is coming from, i'm assuming it is coming from the puddle and another area lower down (too much smoke to get a clear view, plus A/C blocks my view).
I can't figure out where the leak is, and i'm wondering if anyone has had this problem. I could probably find the problem if I went through every possibility (water pump, heating coil, etc.) but I feel that it is just a small leak causing my problem, and I don't have time to go through everything.
I suspected the heating coil, as my passenger side floor board is getting wet, but I do not smell anti-freeze in my car when I drive or use the heater), I am assuming that the rainy weather has opened a leak in my moon roof (had this problem before).
If anyone could offer a suggestion, I would greatly appreciate it!
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Check the coolant at the radiator and the overflow. Add 50/50 mix of water and antifreeze if it is low. If that only temporarily fixes the problem, it means that there is a leak somewhere. Most likely the water pump will have to be replaced, but it could be a leaky radiator, radiator hose, or heater core hose. If the radiator is full of coolant, make sure the fan belt is on, and is tight, or that the electric fan comes on if it has an electric driven fan. If all of these items check out good, replace the thermostat.
Clogged radiator and leaking radiator are two different problems.
Either one, warm the car up first. Just turn it on and let idle until it comes to normal operating temperature. Once there, turn the car off and pop the hood. Carefully, touch across the radiator from one side to the other. If the radiator is clogged, one side will be cool to the touch. If one side is just cooler than the other, that is normal.
For leaks, just look around the radiator and its hoses for coolant leaks. Then look around the engine. Specifically the head(s), hoses, and freeze plugs. If no coolant is seen in those areas and your still losing coolant, you may have a blown headgasket and leaking coolant internal to the engine.
do not use water. During freezing nights, the water could freeze. when water freezes, it expands. when it expands it can crack your engine block. Do you see anything leaking under the car when its running? Does your car constantly blow smoke out the exhaust?
Wow! The first thing you need to do is fill the coolant up again and take it to a shop that you trust,have them pressurize the coolant system to find the leak,then repair it. But my fears are that who ever check it for you last saw a head gasket leaking and didn't want to fix it so said nothing,Also if your seeing white smoke behind you that is an engine burning antifreeze.
STOP DRIVING!!!!.... if you have no coolant in the system you can ruin your engine.... if there is coolant inside the cabin then it is your heater core that is leaking.... it is difficult ot change on some vehicles becuase it is in the dash but still possible for the backyard mechanic.... you should be able to find one for about $100 but there is alot of labour involved...
The water pump is right above that area. Very common area for leaks on the s-series cars. Oh btw the gasket for the thermostat is just the o-ring in the housing, your new thermostat should have included one.
Most probably an air pocket in ur coolant system, just let it run without the cap on the coolant bowl until no bubbles come out. As for ur oil light and buzzing, it's most probably the low oil level sensors tripping out, which is normal for a VW.
There are two oil sensors, one on the front of the engine near the distributor and one on the right hand side of motor when ur facing the motor. The are both the same size and have only 1 wire on em.
If i remember one has a white connector and one has a black connector. Costs about 20 bucks for the pair.