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Heater not working properly, no place for heater hoses to go in the firewall?

Tiny
DAVID MOON
  • MEMBER
  • 1996 DODGE DAKOTA
  • 3.6L
  • V6
  • 2WD
  • MANUAL
  • 215,000 MILES
There's no place for heater hoses to go in the firewall! How can I get heat in my truck?
Tuesday, October 25th, 2022 AT 2:10 PM

6 Replies

Tiny
DAVID MOON
  • MEMBER
  • 4 POSTS
Found them! On the driver's side of the firewall. Never looked at that! Guess I can flush it out and see if it works. Maybe. Is there anything else I need to check?
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Tuesday, October 25th, 2022 AT 4:23 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Dave, before you flush it do the following to confirm the heater core is the issue.

First, confirm the coolant is full in the radiator (engine cold). If it is and in the reservoir, start the engine and turn the heat on high. Allow the engine to reach operating temp. Once it does, turn the engine off. Feel both heater core hoses to see if both are hot. The return will be a little cooler but should still be hot.

If that is the case, we need to focus on the blend air door. If one is hot and the other is cool, then I would recommend the flush. Make sure to backflush it as well.

Here is a link you may find of interest and helpful:

https://www.2carpros.com/articles/car-heater-not-working

Let me know what you find or if you have other questions.

Take care,

Joe

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Tuesday, October 25th, 2022 AT 7:18 PM
Tiny
DAVID MOON
  • MEMBER
  • 4 POSTS
Thanks for the reply. I am flushing the heater core now and have a new thermostat for it also. I'll check for heat in the hoses as you said and let you know what happens. Thanks again.
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Thursday, October 27th, 2022 AT 1:26 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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Hi,

No problem whatsoever. Let me know what you find or if I can help in any way.

Take care,

Joe
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Thursday, October 27th, 2022 AT 5:01 PM
Tiny
DAVID MOON
  • MEMBER
  • 4 POSTS
Heater core was stopped up. Cleaned it and flushed it out and good to go! Thank you for everything.
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Saturday, October 29th, 2022 AT 4:30 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Hi,

Thank you for the update. I'm glad to hear you got it taken care of. Winter is getting closer. LOL

Regardless, please feel free to come back anytime in the future. You are always welcome here.

Take care,

Joe
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Sunday, October 30th, 2022 AT 7:43 PM

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