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  1. #1
    Active Member Two Rings
    Join Date
    Jul 17 2008
    AZ Member #
    30983
    Location
    d

    Engine Coolant Temperature Sensor location

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    I can't find this fucking thing to save my life... I looked at the guide which shows the general locations, but still cant find it.. anyone can help me with a specific description? thanks

  2. #2
    Veteran Member Four Rings djwimbo's Avatar
    Join Date
    Feb 15 2008
    AZ Member #
    25294
    My Garage
    325is 5sp
    Location
    616/MI

    Re: Engine Coolant Temperature Sensor location

    1.8T is on the back of the cylinder head. There's a plastic 90* flange back there with the coolant temp sensor on top.

    2.8L: remove the intake snorkel from the intake elbow to the MAF. Look straight down, there's some wires in the way, but you should be able to see it.
    7A head, AAN intake mani, 034MS T3 Turbo mani: FOR SALE $600 + shipping

  3. #3
    Senior Member Three Rings
    Join Date
    Dec 04 2007
    AZ Member #
    23079
    Location
    New York, NY

    Re: Engine Coolant Temperature Sensor location

    Quote Originally Posted by djwimbo View Post
    1.8T is on the back of the cylinder head. There's a plastic 90* flange back there with the coolant temp sensor on top.

    2.8L: remove the intake snorkel from the intake elbow to the MAF. Look straight down, there's some wires in the way, but you should be able to see it.
    its such a bitch to remove that snorkel piece im going to change mine out tomorrow. I'll take some pics and create a DIY. Hopefully fedex delivers it.

    btw I have a 99 2.8q

  4. #4
    Active Member Two Rings
    Join Date
    Jul 17 2008
    AZ Member #
    30983
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    d

    Re: Engine Coolant Temperature Sensor location

    I forgot to mention I have a 1.8t.. thanks for the replies, and I knew that it was below the elbow but I still couldn't actually see it! more specific plz lol

  5. #5
    Veteran Member Four Rings djwimbo's Avatar
    Join Date
    Feb 15 2008
    AZ Member #
    25294
    My Garage
    325is 5sp
    Location
    616/MI

    Re: Engine Coolant Temperature Sensor location

    I stole these pics from Fred2kA4. Let me know if you want them down for any reason.

    It's green, or the replacement one should be. On the back of the head, in a black coolant flange.


    It's at the very top of the picture. Again, it's green
    7A head, AAN intake mani, 034MS T3 Turbo mani: FOR SALE $600 + shipping

  6. #6
    Veteran Member Four Rings pipe7284's Avatar
    Join Date
    Sep 14 2006
    AZ Member #
    11300
    My Garage
    `07 Audi A4 S-Line 6MT Quattro | '01 Audi S4 AVANT 6spd
    Location
    Lansing, MI

    Re: Engine Coolant Temperature Sensor location

    stand in front of your car, stick your hands towards the back of the head. there will be a black plastic flange, on the bottom of the flange there is a rubber hose connected to it, and on top it will be holding the sensor with a clamp, pull the clamp and then remove the sensor.
    '07 Audi A4 2.0T 6MT APR Stg2 Wife`s DD
    '01 Audi S4 6spd Black AVANT EPL stg III Frankenturbo F21s / 034 RS4 inlets / BOSCH EV4 52# injectors / EPL 85mm maf housing / 034 street density trans and motor mounts / SSCA downpipes / Vibrant catback exhaust / H&R Ultra Low Coilovers / 18" VMR V708 / JHM Short shifter / JHM stg 3 clutch / PODI Boost gauge /

    IN THE MARKET FOR SMICs

  7. #7
    Veteran Member Four Rings Nebone's Avatar
    Join Date
    Sep 15 2006
    AZ Member #
    11498
    My Garage
    B5.5, B6 & B7 A4
    Location
    Cumberland, RI
    Items for Sale

    Re: Engine Coolant Temperature Sensor location

    DIY are already made for both. It's so easy but on the 2001 1.8T and 2.8 its a knuckle buster.

    2.8 DIY and 1.8T
    Dolphin Grey 2005.5 Audi A4 2.0T Avant 6MT
    Goodwood Green Pearl 2002 Audi A4 1.8T Sedan Tip
    Santorin Blue Pearl 2001.5 Audi A4 1.8T Sedan 5MT

  8. #8
    Veteran Member Four Rings djwimbo's Avatar
    Join Date
    Feb 15 2008
    AZ Member #
    25294
    My Garage
    325is 5sp
    Location
    616/MI

    Re: Engine Coolant Temperature Sensor location

    the 2.8 you don't need to remove the TB inlet pipe. The flex tube should be removed and you can sneak your hand around to get to the CTS.
    7A head, AAN intake mani, 034MS T3 Turbo mani: FOR SALE $600 + shipping

  9. #9
    Active Member Two Rings
    Join Date
    Jul 17 2008
    AZ Member #
    30983
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    d

    Re: Engine Coolant Temperature Sensor location

    thank you gentlemen

  10. #10
    Veteran Member Three Rings generik777's Avatar
    Join Date
    May 12 2007
    AZ Member #
    17957
    My Garage
    1998.5 A4 2.8 Quattro Tip
    Location
    MN

    Re: Engine Coolant Temperature Sensor location

    Quote Originally Posted by djwimbo View Post
    the 2.8 you don't need to remove the TB inlet pipe. The flex tube should be removed and you can sneak your hand around to get to the CTS.
    Correct. And let me add, It really sucks ass to get at. My hand was all scraped up afterward. Not much space back their at all.

  11. #11
    Veteran Member Four Rings djwimbo's Avatar
    Join Date
    Feb 15 2008
    AZ Member #
    25294
    My Garage
    325is 5sp
    Location
    616/MI

    Re: Engine Coolant Temperature Sensor location

    Quote Originally Posted by generik777 View Post
    Correct. And let me add, It really sucks ass to get at. My hand was all scraped up afterward. Not much space back their at all.
    Change both front O2 sensors and both EGT sensors on a 2.7T in under 2hrs and then we'll talk about space limitations.... I hate working on 2.7T's, but God do I love driving them[/rant]
    7A head, AAN intake mani, 034MS T3 Turbo mani: FOR SALE $600 + shipping

  12. #12
    Veteran Member Three Rings generik777's Avatar
    Join Date
    May 12 2007
    AZ Member #
    17957
    My Garage
    1998.5 A4 2.8 Quattro Tip
    Location
    MN

    Re: Engine Coolant Temperature Sensor location

    Quote Originally Posted by djwimbo View Post
    Change both front O2 sensors and both EGT sensors on a 2.7T in under 2hrs and then we'll talk about space limitations.... I hate working on 2.7T's, but God do I love driving them[/rant]
    No thanx, I'll Leave that up to you



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