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Coolant leak on back of water pump housing

Tiny
QJACKSON
  • MEMBER
  • 2004 CHRYSLER TOWN AND COUNTRY
  • 3.8L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 190,000 MILES
I have a coolant leak coming from the housing for the water pump. On the passenger side of the vehicle is the water pump. Behind it facing the driver side there is a hole that is leaking out any coolant I add to the radiator. What is this supposed to be plugged with? What part does it need? Hose? Plug?
Does anyone have a diagram of the housing part?
I could only feel my way around to locate it. I put my phone camera through that area to get a better look.
See picture for hole.
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Saturday, June 27th, 2020 AT 9:49 PM

2 Replies

Tiny
94 TRANSAM
  • MECHANIC
  • 680 POSTS
That is a vent hole to equalize the pressure inside the pump. You cannot plug it. If you have coolant leaking from it that means the rear seal is blown and you need a new water pump.

The post below from ASE is possible. I would make sure you count 5 bolts on the water pump. If you have 4 then one fell out.

Remove and replace instructions below.

Rich
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Saturday, July 11th, 2020 AT 12:03 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good afternoon,

The picture did not show. Can you resend the picture?

I attached a picture for you of where the pump mounts and the housing. Can you point or tell me where the hole is located? It may be missing a bolt as a lot of the bolts go directly into a coolant passage.

https://www.2carpros.com/articles/car-is-leaking-coolant

https://www.2carpros.com/articles/radiator-pressure-test

Roy
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Saturday, July 11th, 2020 AT 12:07 PM

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