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Posted on Jan 02, 2017
SOURCE: coolant leak on 99 Ford Taurus
I to have the same problem with the coolant leak in my 99 Ford Taurus. We have tried putting coolant in about 3 or 4 times only to have it leak out. The last thing we tried was to have some dye installed to try and find the leak with no success. My leak was not discovered until it was too late. The transmission cooling part of the radiator got a leak. It allowed coolant to get into the transmission. I was pulling away from a stop light and blew the sun gear apart in the tranny. In short, check tranny fluid. If it is milky, change the tranny fluid and get a new radiator before it's too late. Wound up costing me $2000 for a tranny. Good luck.
Posted on Oct 11, 2008
waterpump houseing/shaft seal is on the way out hence the water/coolant, running along the block. when hot the seal does so, when cold and depressurising seal doesnt.
Posted on Jan 25, 2009
when you say left side are we talking passanger side or drivers side if drivers side which is my guess most likely your waterpump seal is leaking
Posted on Mar 22, 2009
That hose is the drain hose for the air conditioner evaporator. If it is leaking coolant, there's a good chance that your heater core is leaking, as it is in the same 'box' that the air conditioner evaporator is in. You'll need to replace the heater core.
Posted on Apr 24, 2009
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heater core transfers heat from a 1994 Ford Ranger's engine to the
passenger compartment by running hot radiator coolant through a
serpentine of tubing. Air blows past the hot fins of the heater core
and into the truck cab.
The hoses running to and from the heater core must be removed from the engine compartment, but the core itself is accessed from inside the passenger compartment, on the driver's side next to the center console.
1. Turn off the engine, open the hood and remove the battery cable from the negative terminal. Make sure the engine is cool.
Attach a 3/8-inch interior diameter hose to the drain outlet on the
bottom rear corner of the radiator on the driver's side, and place
the bottom end in a resealable plastic container. Turn the drain
valve (located above the drain outlet) counterclockwise with a pair
of pliers. Drain the engine coolant into the resealable container,
then close the valve by turning it clockwise. Remove the hose from
Loosen the hose clamps on the radiator hoses where they attach to
the heater core on the firewall. Remove the hoses.
Unscrew the screws holding the underdash cover in place on the
driver's side of the passenger compartment. Remove the underdash
Unscrew the four screws on the cylindrical heater core access cover
and remove it. Remove the heater core by pulling it down and toward
the rear of the vehicle.
Replace the unit with a new heater core.
Reinstall the heater core access cover and screw in the retaining
screws. Replace the underdash cover and screw it into place.
Replace the radiator hoses on the heater core in the engine
compartment. Tighten the hose clamps. Add coolant until the level is
between the minimum and maximum marks on the reservoir.
Replace the battery cable and start the engine. Check the system for
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