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Old 08-24-2015, 07:56 PM   #1
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Coolant leak

okay so I've been driving my Stang everyday now that I sold my DD.
Noticed coolant leaking on Saturday, it was forsure coolant, fishy smell and orange. Coming from passenger side front of engine, then drips onto that plastic piece that you remove when hangin oil. 90% sure it's the water pump. Very slow leak though, it barely leaks onto the garage floor.

So once I realized the leak I added more coolant because it was way low when the engine was cold.
After I refilled it, the leak stopped.
And I already got an appointment to get the pump replaced along wit the hoses w/ check valves.

Any idea why it woul stop leaking? Not as hot the past few days when it wasn't leaking. And I even drove it over 100 miles today.
It never acted funny or overheated. Just low coolant and a slow leak.

I will post pics when I get home.
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Old 08-24-2015, 08:04 PM   #2
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Have a read here: 2012 leaking coolant. Help!.

It could be the water pump crapping because the degas bottle hose doesn't have a checkvalve and is letting air into the system.
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Old 08-24-2015, 10:21 PM   #3
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Yeah lol I read that whole thing. I'm almost positive it's the water pump.

Is it on the passenger side of the motor in the front?
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Old 08-24-2015, 11:32 PM   #4
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Quote:
Originally Posted by LavaRedSixxer View Post
Yeah lol I read that whole thing. I'm almost positive it's the water pump.

Is it on the passenger side of the motor in the front?
Yes, should be under or next to the belt tensioner (don't remember exactly).
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Old 08-24-2015, 11:53 PM   #5
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I had the exact thing happen to me about a month ago, the dealership determined it was the water pump, I got it replaced under warranty. My car had ~36,000 miles on it.


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Old 08-25-2015, 12:04 AM   #6
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Quote:
Originally Posted by Marc3.71994 View Post
I had the exact thing happen to me about a month ago, the dealership determined it was the water pump, I got it replaced under warranty. My car had ~36,000 miles on it.


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Ouch. Did they replace the hose to one with a check valve?

Here is a pic
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Old 08-25-2015, 02:38 PM   #7
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Quote:
Originally Posted by LavaRedSixxer View Post
okay so I've been driving my Stang everyday now that I sold my DD.
Noticed coolant leaking on Saturday, it was forsure coolant, fishy smell and orange. Coming from passenger side front of engine, then drips onto that plastic piece that you remove when hangin oil. 90% sure it's the water pump. Very slow leak though, it barely leaks onto the garage floor.

So once I realized the leak I added more coolant because it was way low when the engine was cold.
After I refilled it, the leak stopped.
And I already got an appointment to get the pump replaced along wit the hoses w/ check valves.

Any idea why it woul stop leaking? Not as hot the past few days when it wasn't leaking. And I even drove it over 100 miles today.
It never acted funny or overheated. Just low coolant and a slow leak.

I will post pics when I get home.
Not a Mustang but I had the same problem as you. Couldn't figure out where all the coolant was going. Service tech asked a few questions and the answer is?

Gasket for the water pump was leaking but only when I went past 50 miles an hour. Not enough pressure for driving around town for any leak. Got on the interstate and boom low coolant light comes on.
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Old 08-26-2015, 02:12 PM   #8
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Thats too weird.
Getting it fixed tomorrow, but that makes sense.

If only Ford just had the check valve to begin with lol
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Old 09-03-2015, 08:12 AM   #9
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Mine did the same thing I could of sworn up and down it came from the water pump but it stopped I took it to a mechanic and he pressure checked the system and found a leak in my coolant reservoir it was a hairline leak causing my coolant to drip out, but I replaced my hose too and haven't had problems over 3k miles later


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Old 09-03-2015, 08:18 AM   #10
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Quote:
Originally Posted by Marc3.71994 View Post
I had the exact thing happen to me about a month ago, the dealership determined it was the water pump, I got it replaced under warranty. My car had ~36,000 miles on it.


Marc
Exact same thing happened to me at 30,000 mi. Took it to citrus ford there off the CA 60. Came with a 2 year warranty
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Old 09-05-2015, 02:56 PM   #11
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Mine is fixed now, and no leaks since.

I'm thinking of getting one of those coolant tanks off AM.
Moroso Mustang Aluminum Coolant Expansion Tank 63783 (11-14 GT, V6) - Free Shipping

Is it hard to install??
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Old 09-14-2015, 09:10 AM   #12
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Quote:
Originally Posted by LavaRedSixxer View Post
Mine is fixed now, and no leaks since.

I'm thinking of getting one of those coolant tanks off AM.
Moroso Mustang Aluminum Coolant Expansion Tank 63783 (11-14 GT, V6) - Free Shipping

Is it hard to install??
Doesn't look too hard. You'd probably have to drain your coolant system enough so there's none left in the overflow tank and then just disconnect your coolant lines. I was thinking about getting one too but decided to go procharger and it comes with a different tank
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Old 09-14-2015, 09:27 AM   #13
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The water pump is closer to the driver's side than the passenger side, so there is a possibility that your issue is not the typical TSB issue, and a small leak elsewhere. Nonetheless, cool that your dealer is changing the pump out. If it fixes it, it fixes it, if not, then back to the drawing board.
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Old 09-14-2015, 10:10 AM   #14
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Havent had any problems since replacing it
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Old 09-14-2015, 12:59 PM   #15
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Actually now I see what you are talking about now.

It was leaking in a different spot (i can still see the residue marks from before), then traveling by a belt to the passenger side of the motor (where I have the pic)
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Old 09-14-2015, 03:13 PM   #16
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Did they replace the degas hose with one that has a backflow valve? Otherwise the pump will just fail again prematurely. It's the little hose that runs from the tank to the engine near the thermostat.
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Old 09-14-2015, 04:23 PM   #17
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I bet they did because it says it right on the TSB, but iguanaman is right that it is best to be sure. The new hose has markings on it that point toward the engine. You should see the text "ENG" written on one side of it. The old hose has no such markings.
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Old 09-14-2015, 05:57 PM   #18
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I got the same parts as another member on here, he had the order sheet with the part numbers used, and yes the new hoses have check valves if thats what you are talking about.

Not the same crap ones as stock
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Old 09-14-2015, 07:44 PM   #19
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Quote:
Originally Posted by LavaRedSixxer View Post
I got the same parts as another member on here, he had the order sheet with the part numbers used, and yes the new hoses have check valves if thats what you are talking about.

Not the same crap ones as stock
Ah well if you bought the parts yourself then you know you got the right stuff. You should be fine.
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Old 09-14-2015, 09:01 PM   #20
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I gave the parts guy at the dealership the part numbers.

They did it based of the tsb or whatever. so the seals and everything needed.

Here is a pic of the parts the person on here used.
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Old 09-14-2015, 11:25 PM   #21
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You are all set, that is the right hose. But I like that you got your parts on warranty and then installed them yourself. Do all dealerships allow that? That beats waiting there until they get someone to install it for you. I don't leave my car when it is being serviced.
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Old 09-14-2015, 11:28 PM   #22
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No I had a dealership do it and had to pay for parts (i'm not under warranty)

This pic is someone else's. I saved it on my computer so I could order the same parts
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