Question about 1999 Dodge Caravan

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1999 dodge caravan 3.0L is overheating. We have to drive with the heat full blast and when the heat stops blowing we have to pull over and add water! When you take the radiator cap off the water just pours out from where the water pump is! and the temp gage don't work on the inside on the dash!

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Stop that!

If you are driving to the point the heater stops blowing hot air, you are way beyond the point where it should be driven.
You will or already have blown the head gasket.

And do NOT take the radiator cap off a hot engine.
Not only is that extremely dangerous of being badly scalded, but most of the water is supposed to come shooting out!
The engine is supposed to be above the boiling point, and only pressure holds it in.

And you can't just pour water in.
First of all, the temperature change will be too quick and again you risk warping the head. But the system also has to be bleed to get rid of air blockages.

The first thing to do is find the leak.
It appears to be the waterpump from your description. It is only $40 or so. Just change it and the thermostat, immediately. Then fix the temp gauge. Take the temp sensor wire off and short it to ground. The gauge should max out. If it does, then replace the sensor. If it does not move, replace the gauge.
Labor for water pump is about another $100 or so. Another $20 for coolant. Do not run pure water, or else there will be too much corrosion.

Posted on Jul 28, 2010

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