Question about 2002 Audi A4

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Coolant leaking on a4 2002 1.8t

Hi, my audi has started to leak coolant, it is coming from the backof the engie block towards the top of engine, it isnt the water pump or radiator, i cnt see if its the pipes or theengine block itself

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If the coolant is droping on top of the trans, then it is the coolant flange located at the back of the engine then it is the coolant flange,like the person above mentioned. I had happen to my A4. The part is like $20 i believe if you get it yourself, plus new coolant, VW kind. Get the flange and a new o-ring do not try to re-use. There is a DIY for it if you google it : http://www.audizine.com/forum/showthread.php?t=84054. I chose to take it to a shop it was 2-3 hours labor. Just make sure they know what they are doing. The spot is a pain in the ***, and if you have big hands don't even think about it. Well worth the pay to a shop!

Posted on Jun 16, 2009

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There is a coolant flange made of black plastic. It will usually warp with age and the o-ring will leak coolant in that area. Very hard to see, but there are several hoses that connect onto the flange that could leak also. Usually has only 2 bolts holding it on.

Posted on May 26, 2009

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Is it going toward back fire wall if so that the heater hoses.or the pipes leaking.

Posted on May 14, 2009

  • Jimmyaf Mar 19, 2011

    Absolutely the coolant flange, The part is an absolute disaster to change due to the access between the firewall and engine block. Keep track of which bolt go where and make sure the heat shield on the exhaust manifold is cool before you poke your arm down there to reach around the block. Set aside a good chunk of time for this too, my brother and I changed it without a walkthrough and it was a good six hours.

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