2007 V6 Possible Coolant Leak - Ford Mustang Forum

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post #1 of 7 (permalink) Old 06-21-2013 Thread Starter
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2007 V6 Possible Coolant Leak

I noticed on my 2007 V6 that my antifreeze coolant was almost gone so I filled it up and a week later its down to empty again, there is no signs of a leak so i cant figure it out. can anyone help before i spend $$$$ to a mechanic. thanks

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post #2 of 7 (permalink) Old 06-21-2013
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Is it smoking? Running weird? Overheating? No signs of coolant on the ground? Check the oil for signs of coolant in it.

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post #3 of 7 (permalink) Old 06-21-2013 Thread Starter
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Thats whats weird about it, its not smoking or overheating. I dont see any leaks on the floor. In regards for checking the oil would i check using the dipstick?

thank you for your help.
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post #4 of 7 (permalink) Old 06-22-2013
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Pull the dipstick, look for a milky color to the oil. If so, likely culprit is a blown head gasket. If so, don't drive it, major engine damage can ensue.
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post #5 of 7 (permalink) Old 06-22-2013
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I had this issue, turned out my "rad cap" seal was cracked. Car wouldn't over heat or show signs of leaking coolant other than i was missing coolant all the time (especially in warm weather).
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post #6 of 7 (permalink) Old 06-22-2013
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Likely it is a cracked thermostat housing. Take a look at it and see if it is wet on the backside toward the engine; the coolant usually ends up in the valley below the intake manifold with maybe some dripping down the water pump and being mistaken for a water pump leak. They typically crack the seam on the back.

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post #7 of 7 (permalink) Old 06-25-2013
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Yeah, check the thermostat housing, they have a very high failure rate. To find it, find the air filter box, the follow the large black tube up to where it connects to the silver throttle-body on the engine. the thermostat housing is located just underneath the throttle body. If its wet, I would figure its the culprit.

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