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Heater core hose routing diagram needed

Tiny
KYLE LANC
  • MEMBER
  • 1997 DODGE VAN
  • 225,000 MILES
Trying to find out which hose goes on which pipe. Everything I find has heater core nipples top and bottom on my van its left and right so not sure which is inlet and outlet.
Sunday, April 28th, 2019 AT 10:22 AM

8 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
Welcome to 2CarPros.

Not a problem. If you look at the attached picture, it shows coolant flow through the heater core. The left side is supply and right is the return.

Let me know if this helps.

Take care,
Joe
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Sunday, April 28th, 2019 AT 8:43 PM
Tiny
KYLE LANC
  • MEMBER
  • 8 POSTS
I have a 97 dodge van 2500 and it keeps getting hot. I have put a new fan clutch a new heater core a new thermostat. It’s not losing water I can see water circulating in radiator and there is no water in oil or oil in water. I’m at a lose as to what is causing it and what else to someone please help. This is a photo of temp gauge at about 70 mph on interstate
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Tuesday, April 30th, 2019 AT 4:42 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
Welcome back:

Since you replaced all of that, I have to ask if you flushed the cooling system, both the radiator and engine block? Is the belt turning the water pump tights? How hot does it get when driving in town or stop and go traffic? Also, check to make sure there is nothing preventing full air flow through the radiator such as dirt. If the cooling fins on the radiator seem plugged, spray them clean with water.

If you haven't flushed the cooling system, there could be a partial blockage in the radiator or block. I would suggest doing it. Here is a link that shows how it is done.

https://www.2carpros.com/articles/coolant-flush-and-refill-all-cars

Let me know.

Joe
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Tuesday, April 30th, 2019 AT 7:23 PM
Tiny
KYLE LANC
  • MEMBER
  • 8 POSTS
No I haven’t flushed it since I replaced almost everything and it gets hotter when driving at higher speeds when driving around town it doesn’t get to hot
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Tuesday, April 30th, 2019 AT 8:24 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
Try flushing the system. Follow the link I added. Honestly, since it is worse at highway speeds, something is most likely restricting flow. Also, make sure nothing is blocking air from going through the radiator.

Let me know if I can help.

Take care,
Joe
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Wednesday, May 1st, 2019 AT 6:18 PM
Tiny
KYLE LANC
  • MEMBER
  • 8 POSTS
Nothing blocking airflow at all checked and blew out radiator and ac coils just to make sure. Gonna tru to find a different link that I don’t have to pay for
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Wednesday, May 1st, 2019 AT 6:28 PM
Tiny
KYLE LANC
  • MEMBER
  • 8 POSTS
Thank you by the way I appreciate it
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Wednesday, May 1st, 2019 AT 6:29 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,700 POSTS
Kyle, you are very welcome. Let me know the results.

Take care,
Joe
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Wednesday, May 1st, 2019 AT 6:52 PM

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