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falconfan
Dodge Dakota
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12/21/2004
06:43:31
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 Subject: help please !!! heater hose routing
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Message:
1987 3.9L, i bypassed my heater core years ago. just changed out the heater core but can't remember how the hoses are routed.
is the htr.control valve in the hose that goes from water pump to htr.core?
which hose goes to the top of core and which to the bottom?
tried to look at the pics in repair book but can't make it out clear enough.
poor truck has 242,000 miles on it :(
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spt
Dodge Dakota
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12/21/2004
08:24:20
| RE: help please !!! heater hose routing
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Message:
The bottom hose(bottom of core) is where the coolent goes in and the top is where the water goes out(back to the system). This is done so the hot coolent sits longer in the core and produces more heat. I am not sure on the htr.control valve, I would suggest putting on the input line, so when it is shut off the coolent will just bypass.
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falconfan
Dodge Dakota
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12/21/2004
16:37:05
| RE: help please !!! heater hose routing
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Message:
SPT, thanks very much. i found a used car lot today with an '89 dakota and they let me look under the hood. the hose from the water pump goes to the bottom and the hose from the top of the core goes to the intake manifold and it is the one that has the control valve. appreciate your help !!! falconfan.
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spt
Dodge Dakota
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12/21/2004
22:24:29
| RE: help please !!! heater hose routing
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Message:
Glad you got it fiqured out. I went through the same thing with my 88 Dak but I do not have a htr.control valve on mine.
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