Question about 1992 Volkswagen Jetta

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Coolant leak??? Hi, I was out driving my 1992 gas Jetta down the highway. After about 15 minutes of driving my coolant/water level light was flashing and the alarm came on. I pulled over and noticed there were fresh drip marks on the highway behind me leading up to my car. I opened the hood and checked the coolant tank. I couldn't see any coolant, so I grabbed some bottled water and started topping it up. It took 2 500 ml bottles to bring the level up to the max. I than restarted the car and continued driving. After another 15-20 minutes, the light and alarm came back on. Again I pulled over, and again had to put in 2 bottles of water. Now that I'm home, I'm pretty sure I know where it's leaking from. I'd like to go out and start draining the system and repairing the problem, but for the life of me I can't find out how much coolant I need to put back in once I've drained and fixed the leak. It's my only car so I'd like to pick up the coolant before I start any repairs. And I can't check my owners manual because it's gone missing. Your help would be greatly appreciated!!!

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  • ilive4dallas Sep 06, 2008

    I drive all day and about mid day the thermostat light blinks I see no leaks takes half a gal of water(if that) but still blinks drained and filled it hose to coolant as it doesnt have a plug, light went off how to prevent this?? I drive for a living, and need a cheap fix!

  • Anthony Velez Apr 05, 2012

    about 2 galons of 50/50

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Ur water pump is leaking, and its very hard to replace. If u look just below the alternator u'll notice a bracket. That bracket is about 7 or 8 inches long. It's actually the water pump. Loosen the alternator adjustment, remove the belt, remove alternator and then u shall see the water pump. There are 4 bolts (maybe 6, can't remember) and the top two are really hard to get to. Need a socket (about 12mm) that can pivot in all directions. In any case, i doubt u should attempt this.

Ur car will need roughly 7 litres, so 1 gallon pure anti freeze and slightly less than a gallon of water.

Another problem u may have is a blown head gasket with an external leaks. Not all leaks from blwon haed gaskets leak into the cylinders.
Obviously check where ur leak is coming from before removing parts. Could be radiator, hoses or the coolant bowl itself.

If ur car is smoking white from hte exhaust, then u know it's a head gasket,
Lemme know where ur leak is comin from for more accurate sloutions.
Good luck.

Posted on Sep 08, 2008

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It should hold a gallon and then add water to top it up

Posted on Aug 27, 2008

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No, you can't add too much coolant. Rather, it does not hurt anything if you do. Did you add it to the radiator, or to the overflow tank?

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If it overheats again, make note of when it happens: driving on the highway, or stop-and-go around town. Overheating on the highway usually indicates a clogged radiator, while in-town overheating usually indicates a bad cooling fan (you don't need the fan above about 30 MPH). A bad fan is usually the fan relay, but it can be the fan thermostat (different from the engine thermostat), or a bad fan motor.

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Hi Michael,

The motor shut off and the engine light came on, you won’t start right away and you wait a couple of days and start it again, sounds like your engine was over heated and because it is too hot and the engine frozen.

There are several kinds of engines, water cooling ,oil cooling and air cooling.

Over heated can cause many different problems for the cars, you should check step by step yourself.

Water cooling engine; if you know, you can help somebody.


1. Check the radiator see if you have enough coolant
2. Check the oil see if you have enough oil
3. check the water pump see if the water pump works fine
4. check the thermostat see it is function right.


Suppose your radiator has water or coolant, leave your radiator cap open, start your engine, let it is running 10 to 15 minutes and wait it is getting hot and see the water in your radiator, if the water moves, that means your cooling system works fine, otherwise either the thermostat frozen or the water pump was broken.

You mentioned when you re-start your car, sounds like a diesel engine, please check the where the noise from, if the noise from the water pump area, that means you need to change the water pump. When you change the water pump, change the thermostat at the same time, because when the engine over heated, the thermostat maybe damaged.

Oil cooling engine, check the oil pump. If the noise from the oil pump, you need change it.


Good luck,

Frank

Jun 05, 2008 | 1992 Volkswagen Jetta

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