2012 leaking coolant. Help! - Mustang Evolution

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Old 05-05-2015, 11:10 AM   #1
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2012 leaking coolant. Help!

Found my car dripping coolant today. Hard to tell exactly where it's coming from. If yall could look at the pics and tell me what you think. It was a pain to get my phone in there to get pics.





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Old 05-05-2015, 11:14 AM   #2
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How is your coolant level? If you can reach, maybe check and make sure those bolts are tight. Doesnt seem to be a major leak so I guess it could be worse. Any warranty left on your car?

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Old 05-05-2015, 11:16 AM   #3
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I've seen a handful of threads with bad water pumps
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Old 05-05-2015, 11:17 AM   #4
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That leak looks like it is right below the water pump. It is known to fail pretty regularly. At least it is easy to get at.
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Old 05-05-2015, 11:17 AM   #5
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Water pumps go out on these cars often. It's water pump. Easy fix
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Old 05-05-2015, 11:40 AM   #6
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Well it certainly looks like the source could be the water pump. You should however, try to confirm by getting a closer look at the shaft area.
Shortly after you shut it off may be the best time to see it flowing a bit. Even if you have to remove the pulley.
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Old 05-05-2015, 03:34 PM   #7
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Can't see the pics at work, but be sure to rule out the cheap/easy stuff, like a leaky hose to the degas bottle that might be dripping down.
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Old 05-05-2015, 06:19 PM   #8
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It appears to be coming from somewhere within that recessed area. I can't get my head in there to get a good look at exactly where it's coming from. Would this be covered under the drivetrain warranty? I'm at almost 34000 miles and well over 3 years. Coolant tank level looks ok. This had to just recently start cause before today, I haven't noticed any puddles.

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Old 05-05-2015, 11:05 PM   #9
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It appears to be coming from somewhere within that recessed area. I can't get my head in there to get a good look at exactly where it's coming from. Would this be covered under the drivetrain warranty? I'm at almost 34000 miles and well over 3 years. Coolant tank level looks ok. This had to just recently start cause before today, I haven't noticed any puddles.

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It should be covered under drivetrain warranty, unless your dealer pulls the same B.S. my local dealer did when I had a cooling system issue. They blamed the failure on the $11 overflow hose that goes from the degas bottle to the thermostat, and since they claimed that was the "causal part", they wouldn't cover the water pump failure under the drivetrain warranty, because the overflow hose is not a part of the drivetrain by their definition. Quoted me $571 for parts and labor for the water pump, thermostat gasket, and hose. The "stealership". Don't let them pull that crap on you. And no, they did not get my money.

If you end up diagnosing that it is the water pump and want to DIY it, I have a brand new water pump still in its original packaging that I'll sell to you. I bought it because I thought it was bad when the dealership told me that, but it turns out all that was wrong was that my coolant was low. I topped it off and burped the system, and have driven 2,000 miles now and the coolant level has not gone down a bit.
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Old 05-06-2015, 05:12 AM   #10
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I'm wondering if they'll cover mine because I have modded my car (intake, exhaust and tune). I'm thinking they'll try to blame the mods even though it's a known issue.

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Old 05-06-2015, 05:44 AM   #11
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The "tune" is what they may use against you. A CAI or exhaust will not effect the water pump, but the tune may be used against you.

Does not cost anything to take the car in under warranty and find out....
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Old 05-06-2015, 06:24 AM   #12
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Does not cost anything to take the car in under warranty and find out....
Unless they damage the car while it's in their possession, like they did to mine. No more stealership for me if I can avoid it.
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Old 05-06-2015, 06:56 AM   #13
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The "tune" is what they may use against you. A CAI or exhaust will not effect the water pump, but the tune may be used against you.

Does not cost anything to take the car in under warranty and find out....
Yeah, that's my worry. I couldn't find a TSB for the pump, so my guess is they'll try to get out of it.

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Old 05-06-2015, 08:32 AM   #14
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I looked today after I got home from my girl's house. Takes me about 40 minutes of driving. Everything looked rather dry. I looked after being home for about an hour and a half. When I noticed this yesterday, I had the front end jacked up to install my fog lights. Maybe the front being up allows the coolant to weep out more? I have no idea.
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Old 05-06-2015, 09:41 AM   #15
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Found a TSB!

Coolant Pump Leakage Due to Air Entering the System – 2011-2014 Ford MustangVitaly's Mobile Auto Diagnostics, LLC - Vitaly's Mobile Auto Diagnostics, LLC
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Old 05-06-2015, 10:56 AM   #16
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That's the same one they pulled for mine. Note that it says it's not covered under ESP because the causal part is the overflow hose. Take it in asap before you hit 36K.
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Old 05-06-2015, 12:30 PM   #17
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That's the same one they pulled for mine. Note that it says it's not covered under ESP because the causal part is the overflow hose. Take it in asap before you hit 36K.
Called them today and the service guy said if the hose does not have the check valve, then they will replace the hose and the pump. I'm taking it in Friday morning.

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Old 05-07-2015, 07:11 AM   #18
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Stopped by the dealer this morning to make sure this repair would be covered and it is indeed covered under the drivetrain warranty. Fyi, the base part number that he used to check coverage is the pump part number, 8501 I believe.

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Old 05-07-2015, 08:09 AM   #19
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Stopped by the dealer this morning to make sure this repair would be covered and it is indeed covered under the drivetrain warranty. Fyi, the base part number that he used to check coverage is the pump part number, 8501 I believe.

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You have a better dealer than me. That base part number is what makes all the difference.
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Old 05-07-2015, 08:32 AM   #20
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You have a better dealer than me. That base part number is what makes all the difference.
He even let me see his pc monitor when he checked. What a relief!

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Old 05-08-2015, 08:23 PM   #21
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The dealer took care of it under warranty. Left the tune in and had no issue. Thank goodness!

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Old 05-08-2015, 09:09 PM   #22
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^ So, was it the pump?
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Old 05-08-2015, 10:09 PM   #23
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^ So, was it the pump?
The hose going from the thermostat housing to the degass bottle (overflow tank) causes air to get into the system. This causes the pump to fail. The fix is installing a new hose with a check valve and replacing the pump.

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Old 05-08-2015, 11:17 PM   #24
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So all of us without check valves in that hose will have their water pumps fail? I checked mine and there is none. I am thinking about replacing the hose BEFORE the pump fails. It's $50 shipped but it is cheaper than a pump AND a hose. Did you get a part number on that hose so I can double check it?
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Old 05-09-2015, 12:26 AM   #25
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^ Good thinking.
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Old 05-09-2015, 05:30 AM   #26
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So all of us without check valves in that hose will have their water pumps fail? I checked mine and there is none. I am thinking about replacing the hose BEFORE the pump fails. It's $50 shipped but it is cheaper than a pump AND a hose. Did you get a part number on that hose so I can double check it?
Here are the parts the dealer used.



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Old 05-09-2015, 05:38 AM   #27
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ER3Z-8276-A | OVERFLOW HOSE | OEM Ford Parts

if you google that p/n it takes you to hose...idk about if it has check valve.

Ponnie, can you do a visual? glad your dealer hooked you up!

thx guys (this forum rocks)

I'm thinking as are others of a preemptive strike.
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Old 05-09-2015, 07:02 AM   #28
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Here is the new hose on my car. I circled the check valve. It just looks like a type of hose clamp.



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Old 05-09-2015, 10:27 AM   #29
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ER3Z-8276-A | OVERFLOW HOSE | OEM Ford Parts

if you google that p/n it takes you to hose...idk about if it has check valve.

Ponnie, can you do a visual? glad your dealer hooked you up!

thx guys (this forum rocks)

I'm thinking as are others of a preemptive strike.
Strangely that is not the hose that runs to the thermostat housing and has the backflow valve.
According to the diagram it is part #BR3Z8075B and looks like this...


I have no idea why the part numbers are mixed up but that has to be the most expensive foot long hose in history. List is $73?

BR3Z-8075-B*RESERVOIR HOSE for 2012 Ford Mustang
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Old 05-09-2015, 12:48 PM   #30
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Strangely that is not the hose that runs to the thermostat housing and has the backflow valve.
According to the diagram it is part #BR3Z8075B and looks like this...


I have no idea why the part numbers are mixed up but that has to be the most expensive foot long hose in history. List is $73?

BR3Z-8075-B*RESERVOIR HOSE for 2012 Ford Mustang
You have the wrong part number according to what was replaced on my car.

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Old 05-09-2015, 01:39 PM   #31
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I know it is a different part number but here is a another pic of the part they call BR3Z8075B.
It looks identical to the picture you posted. I have no idea why the numbers are different. To confuse us I guess. Notice the backflow valve in the pic.

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Old 05-09-2015, 03:24 PM   #32
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So which one is the real part and its number? Lol, I'm getting this replaced before anything happens


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Old 05-09-2015, 03:31 PM   #33
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I know it is a different part number but here is a another pic of the part they call BR3Z8075B.
It looks identical to the picture you posted. I have no idea why the numbers are different. To confuse us I guess. Notice the backflow valve in the pic.

Probably lol. All I can say is look at the dealer work order picture that I posted. That shows the exact part numbers that were put on my car for this issue.





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So which one is the real part and its number? Lol, I'm getting this replaced before anything happens


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Old 05-10-2015, 02:07 AM   #34
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I know it is a different part number but here is a another pic of the part they call BR3Z8075B.
It looks identical to the picture you posted. I have no idea why the numbers are different. To confuse us I guess. Notice the backflow valve in the pic.

That's definitely not the part on the OP's car, though. Notice the braided sleeve in your pic that's not in the OP's pic.

I should check to see if my car has the "upgraded" hose...don't need a water pump crapout!
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Old 05-10-2015, 06:11 AM   #35
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That's definitely not the part on the OP's car, though. Notice the braided sleeve in your pic that's not in the OP's pic.

I should check to see if my car has the "upgraded" hose...don't need a water pump crapout!
Definitely check what's on your car! You don't wanna have this worry. I was freaking out a bit when I found the leak. My dealer could easily have turned me away from covering this repair. Thank goodness they didn't!

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