Coolant Disappearing? - Page 6 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1987-1991 Parley with regards to your 1987 to 1991 Bonneville, Olds 88 or Buick Le Sabre Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 01-04-2007, 02:49 PM   #51
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update on this.

yesterday when i was doing my trans deal, i was really concetrating on that, but did notice i was being dripped on by hot coolant and it was coming from the driver side of the radiator. I have yet to take a closer look, but this leads me to believe that my UIM is fine. So right now I have to run. I will go into detail later.
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Old 01-04-2007, 03:07 PM   #52
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Most likely the plastic endcap has developed a crack. This is one of the more common ways the radiator fails because the continual heat and cold cycling, expanding and contracting of the plastic...over time and pressure...will crack.

You notice a slight loss and dripping and have time to replace w/o breaking down entirely.
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Old 01-04-2007, 05:27 PM   #53
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well dang this radiator is only a year and 15k old!!!

i will check closer.
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