Coolant leak mysteriously stops?

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Cadillac CTS First Generation Forum - 2003 - 2007 Discussion, Coolant leak mysteriously stops? in Cadillac CTS Coupe, Sport Sedan and Sport Wagon Forums; ...
  1. #1
    feinspa is offline Cadillac Owners Member
    Automobile(s): 2006 CTS base 3.6
    Join Date
    Nov 2009

    Coolant leak mysteriously stops?

    Was lifting the front pass side of the car to swap rotors and I noticed coolant leaking form under the car. My car has never leaked before. It leaked for maybe 10 minutes than stopped. I started the car back up and I slipped under with a light and it appears to be coming from above the water pump area but it’s so tough to see in there; it’s hard to be sure.

    Anyways, I dropped the car and pulled it back out of the driveway and onto the street and the coolant just stopped leaking. I drove around for 10 minutes with the AC on to get it good and hot and nothing. WTF?

    Has anyone ever heard of or seen this before? Could lifting up one side of the car stress something enough to make it leak? I think not. I’d imagine it would leak all the time. Any ideas?

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  3. #2
    CTSM is offline Cadillac Owners Enthusiast
    Automobile(s): CTS 08' 3.6 DI Performance | 07' Lux 3.6 Volant-Borla-Vsways
    Join Date
    Mar 2012

    Re: Coolant leak mysteriously stops?

    I had a similar issue coolant was leaking slowly but not sure from where. So when I replaced my radiator (to prevent trans lines issues) I replaced the radiator, hoses, water pump, water pump gasket and belts. When I took a look at the gasket it was pretty worn out at 82k miles. Of course coolant loss went away after that. My hunch is if you have high mileage on your pump and gasket is to start there, it's either this or that.

  4. #3
    arogers260's Avatar
    arogers260 is offline Cadillac Owners Enthusiast
    Automobile(s): 2003 CTS Luxury/Sport package
    Join Date
    Mar 2012
    Oil cooler cover is another common place to leak coolant from when the silicone seal fails. But from where your describing your leak its pry not your culprit.

  5. #4
    Leects07's Avatar
    Leects07 is offline Cadillac Owners Member
    Automobile(s): 07 cts sport/luxury pkg
    Join Date
    Jun 2013

    Re: Coolant leak mysteriously stops?

    Had a drip under my water pump leaked just a bit and when it was warmer outside leaked a little more ..
    I removed everything to get to it and check it out to find the water pump bolts were loose not falling out loose but I snugged them up a bit more stopped my leak

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