Water Pump??

Discussion in '1996 - 2004 SN95 Mustang -General/Talk-' started by camarenar, Sep 28, 2013.

  1. Hi all,
    Newbie to diagnosing my own issues so any assistance would be helpful. Just had to add coolant to my 99 GT as it was half empty. Looked underneath and no leak until running and under pressure. It appears to stop once the car is shut off. From what I see it looks like the leak is running off the bottom center pulley, which I presume could mean the leak is originating from my water pump.

    Is there anyway to tell for sure without having to just replace it? Thanks for any help ya'll can provide.
  2. There is a weep hole on the bottom of the pump. You should be able to see it while the car is running from under the car. Yes...sounds like the water pump. Not too hard to fix if you have common hand tools.
  3. you can rent a pressure tester from your local auto parts store. once you put the cooling system under pressure, you should be able to see where the leak is coming from.