Heat goes cold at idle (98 Dodge Dakota)

Tiny
DSCHNELL
  • MEMBER
  • 1998 DODGE DAKOTA
1998 Dodge Dakota Sport 4wd, 5.3 ltr V8, Auto, 120,000 miles

Heater works great when you are under way, however when you let off the gas or sit at idel it goes cold. Any ideas?
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Monday, January 15th, 2007 AT 2:08 PM

2 Replies

Tiny
MATHIASO
  • MEMBER
Normaly, a lack of heat is often the first sign that indicates an overcooling problem, but in this situation, Your heater works great when you are underway but stop working at idle.
However, I'm also award that a lack of heat in the passenger compartment isn't always an indication that the engine is running too cold.
In most vehicles the heater core is located in the higher position than the rest of the cooling-system components. Because of its placement, the heater core is one of the the first component to run out of coolant when there is leak in the system. Therefore, when a coolant leaks exists, it's common for the driver to notice a lack of heat in the passenger compartement.
* A quick check of the coolant level tells you what's causing the problems. If the coolant level is good, check your thermostat.
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Tuesday, January 16th, 2007 AT 12:19 PM
Tiny
RASMATAZ
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Remove the Stat and check whether your heat increases at idle-if so change the Stat.

W/O the stat you got more heated coolant going thru the heater core therefore it should inrease a little. BTDT
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Wednesday, January 17th, 2007 AT 3:42 AM

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