High RPM Coolant Leak

[88-GT]

Over the past few months I have noticed that I am slowly losing coolant but couldn't find out where from, never puddles where I park, or even smell coolant.

I had my car on the dyno for a run and after the run the operator pointed out a few small puddles of coolant directly under the water pump. Next I was installing and testing the shift light I just bought in my garage, obvuiously requiring revs in the ~5000 range, and sure enough have a few puddles of coolant on the ground in the same spot.

Is this a sign that my water pump is most likely on its last leg or maybe something else? The system seems to hold pressure just fine over night, etc.

Thanks in advance for any possible help.

 

[ebk06]

Sounds like a waterpump going bad. When mine went out I was driving and hit 5K and a bunch of white smoke came from under the car (radiator fluid). Made it my destination with no overheating stopped looked under the hood and no sign of a leak. About 30 minutes later I went back the the car and it had a steady drip coming from the weep hole. However no fluid leaked when i was driving. I replaced the pump and everything ben fine since........the shaft had play in it when i took it off FWIW.

 

[Wallzy]

It also could be the head gasket with the beginning of a leak...under high load it may be pushing gas into your cooling system causing havoc that can not be seen under idle or low load.