New Aux Water pump, wrong plug
 

2000 A6 2.7t, 154,000 miles

I just got my intake manifold lifted up enough to remove my aux water pump and discovered that the plug on the new pump is completely different than the old pump. Both pumps have the same part numbers on the housings, so this is confusing and I don't know how I'd find the correct one unless I could see the plug first.

I need the car tomorrow, so I'm wondering if I can leave the pump out and bypass it with one long coolant hose between the front drivers end of the head and rear passenger end of the other head (leaving the pump out of the middle)?

Is the pump necessary if you cool down the car before shutting it down, as I always do?

Thanks,

Craig

You'll be fine without the pump for a day. It rarely comes on. Where did you get this new pump?

Why don't you use the plug on your old pump on the new pump? Just use one of those connector tools (usually everyone has one by now or you can get one mail order, ecstuning.com) and extract the contacts from the new pump connector and use the connector from your old pump.

Of course you can bypass the pump if you have to go somewhere soon and fix it later.

Audi is notorious for changing connectors....I tried to replace the foglight connectors on my 2K4.2 and the dealer gave me the connectors in the book...not the same. Had to bring in the old one and match the part number and special order.

Got it from Auto Parts Warehouse. It's a bosch and looks identical to the original except for that original plug which is much smaller, shallower and square as compared to the new one which is larger, deeper and is square on one side and round on the other.

I'm not sure a connector tool is going to help me here. This connector is integral to the pump. It would be easier to find the same connector female part and cut the connector on the wire harness & put the new female end on. I'm going to return the pump and get one from Blau Parts or somewhere that can make sure it's the same one I have from a photo. These massive online parts houses have no central warehouse so it's a crap shoot what you get.

http://img695.imageshack.us/img695/2898/img1400dw.jpg

http://img62.imageshack.us/img62/8928/img1401y.jpg

http://img855.imageshack.us/img855/555/img1404qr.jpg

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http://img217.imageshack.us/img217/4572/img1406o.jpg

In know this is not an optimal solution, but you CAN remove the female connectors from the original connector and just plug them onto the new pump. Just be careful of polarity or the pump will spin backwards. As far as removing the original connectors, I've never done it, so you'll have to figure out how they are installed. I would hate to have to lift the manifold twice just to use the car for a few days. Mine was a real bear to remove. But my pump input pipe just rotted off. Major anti-freeze leak.

I decided to wait until the new pump arrives and left the car parked.

Ordered the new pump from ECS on Sunday right after posting those photos thinking regular ground would have no problem getting to me by Thursday or Friday at latest. ECS didn't ship until late Tuesday and tracking now shows it arriving next Monday. There goes my weekend plans, and I'm stuck with another week of figuring out how to get to work :>( No time to fix it during the week.

Who knew I'd have to spend $35 for priority shipping to get something in less than a week.