Heater core flow? - Dakota Durango Forum
Gen III Dakotas 1997-2004 Dakota-Specific Questions

 
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post #1 of 5 Old 03-07-2017, 12:06 PM Thread Starter
Motohead1
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Heater core flow?

I have a 2001 Dakota quad that I just did an engine swap on and trying to find out why my heat is not working. The truck sat for a several months with no coolant in it. I just covered the heater core pipes with a looped hose to keep the curious bugs out.

I am going to back flush the core but I caint remember what connector is the inlet? or if it matters as Im not sure there is a check valve or heater core cutoff valve as I do not see one.

Any help would be appreciated.

Thanks.
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post #2 of 5 Old 03-07-2017, 02:46 PM
Dodgeballs
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Quote:
Originally Posted by Motohead1 View Post
I have a 2001 Dakota quad that I just did an engine swap on and trying to find out why my heat is not working. The truck sat for a several months with no coolant in it. I just covered the heater core pipes with a looped hose to keep the curious bugs out.

I am going to back flush the core but I caint remember what connector is the inlet? or if it matters as Im not sure there is a check valve or heater core cutoff valve as I do not see one.

Any help would be appreciated.

Thanks.
There is no valve. You flush and back-flush...both directions. Just disconnect the hoses from the engine side and hold a hose nozzle up against them. Keep water pressure medium, not too high. As far as which is the inlet, the top connection is usually the inlet. Also, you need to bleed out all the air. Run the motor till the thermostat opens with front wheels up on ramps and radiator cap off.

2003 Dakota SLT
Quad Cab 4.7L Auto 2WD
270K
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post #3 of 5 Old 03-07-2017, 03:46 PM Thread Starter
Motohead1
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Thanks thats a great help. My hoses are little different as I swapped in a diesel. Hopefully this flush will work and putting it up on ramps should help get the air into the upper radiator hose.
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post #4 of 5 Old 03-07-2017, 05:49 PM
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Quote:
Originally Posted by Motohead1 View Post
Thanks thats a great help. My hoses are little different as I swapped in a diesel. Hopefully this flush will work and putting it up on ramps should help get the air into the upper radiator hose.
You can also mix some radiator flush with water, pour into heater core via hose, then let it sit for an hour or two capped off... then flush. Don't use full strength as it may etch the metal.

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post #5 of 5 Old 03-20-2017, 12:48 AM Thread Starter
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Looks like my core is fine just need to fix my divertor doors with a relearn apparently?
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