Hey guys, I have the infamous aux water pump leak. I lose about a cup of fluid every 1,000 miles. I was wondering where the leaktypically occurs. Does the pump itself have a crack or is it usually a bad hose. I can see the crusty coolant on the front if I look under the intake manifold and I can smell antifreeze burning when I shut the car off.

 

From what iv read i believe it is the seals inside the AUX pump that go. The main reasons being the location (extremely high heat) and the fact that it dosnt run very frequently on a stock car. If it is a leak inside the pump your going to end up replacing it. When you do you might think about switching to a lower temp coolant sensor which will run in more often.

http://forums.audiworld.com/s4/msgs/1585786.phtml

 

I already have the low temp sensor that runs the unit for 10 minutes after shutdown and any time the temp reaches 94 Celcius (I think). Thanks for the reply, I guess I'll replace it.

 

It could be a hose connection to the pump not the pump itself. I dont really know any to find out without starting to take stuff apart haha

 

well i have a 98 a4v6 and my car did the same thing. i dont know how much i spent on antifreeze for my car. it ended up being a cracked waterpump. i had to replace my water pump, timing belt, serpentine belt , and thermostat meter at a local volkswagen dealer for 1300

 

I just replaced mine last week, parts of the pump break off and get stuck in the lines, i had to fish out broken pieces of plastic out of the lines when i changed it.

 

Good info, I just ordered the pump, both hoses, high performance gaskets, and iridium plugs from ECS Tuning. Looks like a fun Saturday coming up. Do you guys need a DIY with pictures? I haven't been able to find one?

 

That link i posted is a DIY with pictures. By all means make one though if you want

 

Ummmm Aux water pump???? are you tellin me we have more than one pump?????

 

i think another DIY would be great, def i include pics though. I need to do this one of these days.