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Old 02-13-2014, 08:01 PM   #1
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Lost coolant no leak anywhere

I have a 96 mustang gts/248a and I have to put coolant in every few weeks and no leak of any kind anywhere also car runs amazing no sign of any problems and no weird smells! Just my low coolant light telling me coolant is low and it's always rightClick image for larger version

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Old 02-13-2014, 08:32 PM   #2
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Originally Posted by skorch85 View Post
I have a 96 mustang gts/248a and I have to put coolant in every few weeks and no leak of any kind anywhere also car runs amazing no sign of any problems and no weird smells! Just my low coolant light telling me coolant is low and it's always rightAttachment 147798
Might be a real low leak in your water pump. The reason you may not see anything is that unless your driving on the highway, there isn't sufficient pressure for the leak. Once you hit the highway, the pressure builds up and you lose fluid. This didn't happen to my Mustang but it did on my daily driver. Drove me nuts, around town it was fine, on the highway and it lost fluid.

Might not be the same for your car but it's something to toss around.

Good Luck!
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Old 02-13-2014, 09:25 PM   #3
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Maybe a head gasket leak, it could be slowly leaking into the engine. If you don't see any leaks, it could very well be the culprit. Double check all hoses, clamps and water pump to make sure. If the problem persists take it in to the doctor.
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Old 02-15-2014, 08:50 AM   #4
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So I found the leak with the sun shining in garage! It's leaking where the radiator hose connects to the intake manifold but the leak seams to be coming under the manifold not where the hose connects but just under it! Click image for larger version

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ID:	147910would that mean I need a new intake manifold
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Old 02-15-2014, 09:14 AM   #5
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Hard to see exactly in the picture, but is your thermostat housing gasket leaking onto the manifold?
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Old 02-15-2014, 09:24 AM   #6
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It don't seem like it's coming from thermostat but a couple inches directly under it at bottom of intake crossover and if that is bad how hard is it to put new one on and can I put pi intake on without pi heads
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Old 02-15-2014, 09:29 AM   #7
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It don't seem like it's coming from thermostat but a couple inches directly under it at bottom of intake crossover and if that is bad how hard is it to put new one on and can I put pi intake on without pi heads

Ok. Just wondering because that would be a quick and easy thing to do. Sometimes people even need to replace the housing. I know someone who has a '67 Mustang who needed to replace their thermostat housing.
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Old 02-15-2014, 09:39 AM   #8
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I will try that first but I have a feeling it's more the that
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Old 02-15-2014, 09:40 AM   #9
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Ok. Let us know.
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Old 02-15-2014, 09:20 PM   #10
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Can input pi intake on non pi heads and how easy is it
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Old 02-15-2014, 09:45 PM   #11
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Can input pi intake on non pi heads and how easy is it
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Old 02-15-2014, 11:37 PM   #12
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Welcome to the wonderful world of plastic intakes. The plastic intakes are notorious for warping and leaking under where the metal crossover attaches to the plastic. I'm replacing mine right now because of this very problem, just waiting on a new intake to arrive from LRS.

No fixing this...



And yes, a PI intake swap on a NPI motor is a very common performance mod for the 96-98 cars. Google will give you all the info you need on the swap. My 98 has a 99 PI motor already so mine is just a yank and replace. You have to do a few extra things for the NPI motor but its nothing you can't do in an evening with a good set of tools.
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