Question about 1997 Dodge Grand Caravan

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There is a leak in the bypass hose spout behind the

There is a leak in the bypass hose spout behind the water pump housing. The spout that the hose connects to is cracked. How do I repair that?

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  • cruz_family Nov 18, 2009

    It's the 3.3L V6. On the water pump housing, you have the main hose (about 3" diameter) that connects to the thermostat housing/water outlet. Behind the water pump housing, the valve that connects the heater bypass hose (about 1" diameter) to the engine, below the thermostat housing/water outlet, has snapped off. There's still a piece of that valve in the water pump housing but I don't know if it's screwed in or not. Right now, it's corked, so the van has no heat and winter is right around the corner. Please help! Is that valve replaceable or do I need an entirely new water pump housing?

  • cruz_family Nov 18, 2009

    It's the 3.3L V6. On the water pump housing, you have the main hose (about 3" diameter) that connects to the thermostat housing/water outlet. Behind the water pump housing, the valve that connects the heater bypass hose (about 1" diameter) to the engine, below the thermostat housing/water outlet, has snapped off. There's still a piece of that valve in the water pump housing but I don't know if it's screwed in or not. Right now, it's corked, so the van has no heat and winter is right around the corner. Please help! Is that valve replaceable or do I need an entirely new water pump housing?

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I have a perminent better solution to this problem. The broken part is out there however, its on "back order". The fix that I have done is to remove the water pump and "punch" out the broken piece from above. Then use a 3/8" pipe thread tap and put threads in that hole. Go to your nearest auto parts house and purchase a "heater hose nipple". Then, with a deep well socket and a long extention, thread the nipple in. Install the hose and clamp it at both ends. You can tap that hole because its cast aluminum.

Posted on Dec 20, 2010

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Is it a 3.0L v6? if so, then you need to remove the intake manifold i believe..if not, then try to take out the throttle body first, then un bolt the bracket for the hose to the transmission, and pull the pipe out that way....install new o-ring, use a lube to install back into water pump..
if its a 3.3L then you will need to see where the other end of the hose goes and remove any bolts and the procedure should be the same...if not, then you may need to remove the timing cover...

Posted on Nov 18, 2009

  • mechanic144 Nov 18, 2009

    ok if that valve is still in the water pump then you may need to replace the water pump. As for the by pass pipe, you will need to locate one from an auto wreckers and replace it...good luck trying to find one new, if its not discontinued, it should be available new. then buy that one...if there are any pieces, in the water pump, then you will need to replace it as the pump impeller is not turning causing the over heating, and the no heat issue is because the cork in the pipe....good luck'

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