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  1. #1
    Senior Member Three Rings KLX's Avatar
    Join Date
    Jan 28 2018
    AZ Member #
    413118
    Location
    Shaw AFB SC

    O-Ring for front coolant temp sensor...rant.

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    I am pretty sure I found the leak the temp sensor is operating but I got the pinkish stuff around the clip, any idea the correct P/N or size for the O-Ring...thanks. Never mind found it...Went to Orelly's grabbed 4 for 4 bucks, now with that being said, that clip!!!! ( more on that in a second) Yes removing the cap for a second helped, pulling out the sensor did dump some coolant out ( more that I expected) the O-ring had to be dug out, I figured it was not installed until I looked down in there, popped it out put in the replacement and pressed down on the sensor while trying to get my giant hams down in there to put on the clip, I tied some floss to the clip so if ( and it did ) fall into the engine bay, I could fish it out. After fishing it out ( while worrying how I am going to get to work if I cant get this damn clip out)....just take your time and use a good source of light to press it back into place with out breaking it...ok rant over I took her out for a late night spin, got the engine to temp and checked for leaks none to report...whew....time for a bath and a shot...peace.
    Last edited by KLX; 04-04-2019 at 09:04 PM.
    2021 S5 Premmie SB 034 intake & springs/034 Stage 1
    2018 S5 Prestige SB Sold
    2015 S4 B8.5 APR Stg2 DP Sold

    @businessklazz on Instagram

  2. #2
    Senior Member Three Rings KLX's Avatar
    Join Date
    Jan 28 2018
    AZ Member #
    413118
    Location
    Shaw AFB SC

    UPDATE, the second leak was the connection between the thermostat housing and the coolant pipe, both were replaced under warrenty.
    Last edited by KLX; 04-25-2019 at 05:17 PM.
    2021 S5 Premmie SB 034 intake & springs/034 Stage 1
    2018 S5 Prestige SB Sold
    2015 S4 B8.5 APR Stg2 DP Sold

    @businessklazz on Instagram

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