Question about 1998 Ford Taurus

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Started running hot one day, and filled coolant. Couple of days later it ran hot and I decided to change the thermostat. Worked fine until later the next day. Coolant started coming out of the coolant resovoir after getting off the highway. If its a blockage, would it not run hot all the time?? Water pump seems fine. Only leakeage is from the resovoir.

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Check your oil and see if it looks like chocolate milk. If the engine is completely cool (like it's been sitting overnight), unthread your oil drainplug a little until fluid starts to come out. You might have coolant in it. If you don't have coolant in your oil, and are still having the problem, have your block tested. It's really easy to do yourself and you can rent the block tester at Autozone for $25.00 (you get it back once you return it) and the block test fluid for $8.99. Follow the directions. If the test fluid turns green or yellow you have combustion/emission gases in your coolant. If this is so, you can undo the spark plug wires on first one head then the other, this will tell you which cylinder is leaking. If you don't want to do this, take out each spark plug and look for coolant on the threads or white corrosion. This is all leading toward a blown head gasket.

Another problem with this car comes up in the cooling system. If you're still using the red coolant, this is really acidic for your cooling system and has been known to eat away the impeller blades of your water pump. You can check the seals by seeing if you have water coming out of your weep hole. If so, replace the water pump. You can also get your cooling system pressure flushed at a shop where they do a reverse flush and chemical flush. After this, switch to the green coolant which doesn't have the acidity of the red stuff.

Finally, there are also problems with electric scale in the heater core. You can put a wire that is grounded to the frame against your heater core (secure it with a hose clamp to the heater core), this will draw away the electro-magnetic field that leads to the break-down of your coolant. Let me know how things go.

Posted on Jun 28, 2009

  • Joseph Weisenberger
    Joseph Weisenberger Jun 28, 2009

    Use the green coolant, not the "For All Makes and Models", but don't change until you've gotten all the old coolant out of the entire cooling system-block and all.

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