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No pressure in the cooling system water pump is noisy and leaking

Tiny
RH309WV
  • MEMBER
  • 1995 DODGE CARAVAN
  • 3.0L
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 125,000 MILES
No pressure in the cooling system. I know the water pump is going bad because it is making a rattling noise and beginning to leak. Would this be the cause of no pressure in the system?
Wednesday, December 21st, 2016 AT 7:42 PM

3 Replies

Tiny
STEVE W.
  • MECHANIC
  • 13,003 POSTS
The pressure cap is responsible for holding pressure in the system, however a leaking pump will not let it.

On that engine it is really not a good idea to let the pump leak, tends to damage the timing belt.

I would drain the coolant, run a flush through it (no reason to run the flush on the new pump) Then change the pump and timing belt (has to come off to get to the pump) Change the thermostat and the pressure cap. Top up with fresh coolant and enjoy a rattle free ride.
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Wednesday, December 21st, 2016 AT 11:05 PM
Tiny
RH309WV
  • MEMBER
  • 6 POSTS
Thank you. That is what I was thinking, but I was not sure. I appreciate your response and help.
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Thursday, December 22nd, 2016 AT 6:53 AM
Tiny
STEVE W.
  • MECHANIC
  • 13,003 POSTS
You are welcome, Please use 2CarPros for any automotive questions.
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Thursday, December 22nd, 2016 AT 8:15 PM

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