Question about 1996 Saturn SL

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Replaced Radiator Now Trans is Leaking?

I just replaced the radiator and now the transmision is leaking?

I checked all the cooler lines and can not find where it is coming out from, but it has drained out all the trans. fluid. Please help!!


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  • juliema3 Dec 07, 2008

    I washed under the hood and refilled the trans. and drove the car...even red lined its not leaking, but I am scared to drive it long distance in fear it might break down.....I could not locate where it was leaking from?

  • juliema3 Dec 07, 2008

    No...however I had to take out the old tranny cooler to put in the radiator.

    Question: If the tranny dip stick was not all the was in....could it have leaked out there?

    Thanks for all you help!!

  • juliema3 Dec 07, 2008

    Service light is also lit up?

  • Nathan Rankin
    Nathan Rankin May 11, 2010

    did the new radiator that you install have the tranny cooler built in or no??

  • yadayada
    yadayada May 11, 2010

    Have you crawled under the car? Where is the fluid dropping to the ground? frt or center of car?



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Did you run the engine while the trans cooler lines where loose or disconnected? no it will not come out the fill pipe unless the trans is severely overheated. How much did you add to the trans, it holds about 2-1/2 gallons, it will show empty at a little over 1-1/2 pints on the dip stick. Only check trans levels with a hot transmission, if you fill it to the line cold you have overfilled the trans, this can cause damage to the trans clutch pack from air bubbles.

Posted on Dec 07, 2008

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If you have a seperate tranny cooler, sounds like you lost most of your coolant in the switch of the old radiator !! I dont think you could loose that much from the top of the dipstick depends on the locations of the dipstick!! If the dipstick goes straight into the tranny and no dipstick then that is possible!! unlikely but possible!! I would watch the car for a while and keep a close check on your fluid level!

Posted on Dec 07, 2008

  • Nathan Rankin
    Nathan Rankin Dec 07, 2008

    sounds like you have jus blew some carbon onto your O2 sensor from running it to the red line!! jus keep a close watch on your fluid levels and make sure you are checkin your levels while the motor is warm and in netural



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