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  1. #1
    Veteran Member Four Rings Nollywood's Avatar
    Join Date
    Nov 03 2011
    AZ Member #
    83391
    My Garage
    B6 Avant 420-R, Toyota Runx 1.4 16V
    Location
    Manitoba, Canada.

    Highest Temperature Your Engine Has Reached (Overheated) And Survived.

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    Hey guys!

    Iím just putting this out here, so we can have a rough idea how hot our engines can get, without destruction. Iíll start with mine. Feel free to give a mini write up as Iíve done, how you came to be running your motor that hot. Please maintain the same format below, for clarity:

    Model: B6 A4 Avant Quattro 6MT.
    Model year: 2003.
    Engine: 3.0 V6.
    Max coolant temperature reached: 133.5 degrees C.
    Duration: 16 - 28 minutes.
    Stationary / moving: Mixture of stationary and speeds up to 46mph.
    Coolant temperature after cruising at 40mph+ for 10 minutes: 116 degrees C.
    HVAC mode: Air con off, heater set to Hi, fan speed at max.
    Reason: Fan control module failure.
    Temperature logged via: VCDS.
    Ambient temperature: 16 - 34 degrees C.

    My FCM died, and for the past 2 weeks, I have been running the car without the fans, trying to maintain speeds above 50mph to provide cooling, and having my heater on max temp / max fan speed to draw some of the heat out of the coolant via the heater core.

    I havenít always been moving though, getting caught up in rush-hour traffic multiple times. FCM replaced, and engine runs great, with no adverse effects from the high temps reached.
    His:
    B7 420-R Avant - RS6 4.2 BiTurbo, (BCY). B7/8.5 Hybrid "RS4" OEM Widebody Coming Soon.

    Waiting To Purchase 2012 B7 Seat Exeo ST Sport Tech.

    Hers:
    2002 Toyota Runx, 1.4L DOHC 16V Auto.

  2. #2
    Veteran Member Four Rings blitz2190's Avatar
    Join Date
    Jul 31 2014
    AZ Member #
    269656
    My Garage
    2004 A4 1.8T Quattro, 2.7T swap Stage 3 APR 6 speed
    Location
    NH

    Quote Originally Posted by Nollywood View Post
    Hey guys!

    Iím just putting this out here, so we can have a rough idea how hot our engines can get, without destruction. Iíll start with mine. Feel free to give a mini write up as Iíve done, how you came to be running your motor that hot. Please maintain the same format below, for clarity:

    Model: B6 A4 Avant Quattro 6MT.
    Model year: 2003.
    Engine: 3.0 V6.
    Max coolant temperature reached: 133.5 degrees C.
    Duration: 16 - 28 minutes.
    Stationary / moving: Mixture of stationary and speeds up to 46mph.
    Coolant temperature after cruising at 40mph+ for 10 minutes: 116 degrees C.
    HVAC mode: Air con off, heater set to Hi, fan speed at max.
    Reason: Fan control module failure.
    Temperature logged via: VCDS.
    Ambient temperature: 16 - 34 degrees C.

    My FCM died, and for the past 2 weeks, I have been running the car without the fans, trying to maintain speeds above 50mph to provide cooling, and having my heater on max temp / max fan speed to draw some of the heat out of the coolant via the heater core.

    I havenít always been moving though, getting caught up in rush-hour traffic multiple times. FCM replaced, and engine runs great, with no adverse effects from the high temps reached.
    no adverse effects that you know about, but at that temp things can begin to warp, especially aluminum heads, and can lead to headgasket failures down the road, best to not chance it and replace the fcm or at the minimum run line with a switch to turn them on manually.
    Never argue with an idiot, they'll bring you down to their level and beat you with experience.
    2.7T Swap Wiring Guide (Psst this is a link)
    New Build In progress built 2.7 STK 2004 B6 A4- Thread and pic to come



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