1999 Ford Taurus Radiator Fulid Leak

FIADRAMA

MEMBER
1999 FORD TAURUS
6 CYL
FWD
AUTOMATIC
175,000 MILES

I can run the car without using the air or heat and there is no leak. After I ran the car I parked it and left it running. Still no leak. I turned on the heater. It got hot, but still no leak, even after 5 minutes. I turned it over to the Max A/C and turned the temperature to Max Cool and the car started leaking again. Turning it back to Heat did not stop the leak. I let the car sit overnight and drove the car to work without the heater or A/C running and the car did not leak. Ion.

4 Replies

CARADIODOC

MECHANIC
33,871 POSTS

Is the leaking liquid clear or green and where is it landing on the ground?

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Wednesday, June 22nd, 2011 AT 6:38 PM

FIADRAMA

MEMBER
2 POSTS

Green

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Wednesday, June 22nd, 2011 AT 7:08 PM

CARADIODOC

MECHANIC
33,871 POSTS

There's two tests you can do to find the source of the leak. The easiest is just a normal pressure test. Many auto parts stores rent or borrow tools and they will have a pressure test kit. Pump the system up to 10 - 15 pounds, then search for dripping coolant.

For more elusive and slower leaks, you can add a small bottle of dye in the radiator, drive the car long enough to mix it up and for the leak to start, then search with a black light. The dark purple dye will show up as a bright yellow stain that you can follow to the source of the leak.

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Wednesday, June 22nd, 2011 AT 7:19 PM