Question about Cars & Trucks
Is the problem the heater core or is there a problem with the connectors at the fire wall?
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Posted on Jan 02, 2017
Do you notice that the engine coolant temperature gauge stays on the lower part of the scale as well? If so, it's likely that your thermostat is stuck open - this prevents the coolant from staying in the block long enough to absorb heat that is used to heat the climate-controlled air. I'm not positive on the 3.0 in your car, but the 2.8 V6 in my Audi A4 requires tremendous disassembly in order to change the thermostat. I believe the 3.0 is the same - the labor involved is only slightly less than that required to do a timing belt change (which, if you change the thermostat, since you're already all the way in there, you may as well do the t-belt service as well so you don't have to pay for all that labor again any sooner than necessary).
Posted on Sep 30, 2008
SOURCE: 2000 Cherokee not warm
Aside from flushing the radiator and heater core andreplacing your hoses, did you happen to replace your thermostat. Sounds to me like that's your problem if everything else seems to be in order. If you change the thermostat and still have no heat, you might check your vacuum lines running to the back of your heater controls inside your dash. That's really the only other thing that I believe could be causing your lack of heat.
Hope this helps! Have a great day and try to stay warm!
Posted on Nov 23, 2008
This is definitely a heater core issue, but I might also suggest one of the many over the counter cures first before replacing it, the heater core is not a very expensive part but quite a chore to replace.
Posted on Dec 28, 2008
After replacing the thermostat, you must bleed the air from the cooling system.
To bleed air from the 2.2L and 2.5L engines, remove the plug or sensor on the top of the thermostat housing. Fill the radiator with coolant until the coolant comes out the hole. Since the plug is made out of steel and the thermostat housing is aluminum, it is a good idea to apply an anti-seizing compound or Teflon® tape on the plug threads prior to installation. Install the plug and continue to fill the radiator. This will vent all trapped air from the engine.
Any trapped air in the heating system will have to be displaced by coolant. Once the cooling system is filled, with the radiator cap off, turn of the heater at it's highest setting. Start the engine and allow it to reach operating temp. You should see a drop in the coolant level as the air in the heating system is displaced by coolant. Add coolant to the proper level and replace the radiator cap.
Keep a close eye on the coolant level for at least the next couple of weeks. The cooling system is a "closed" system. Any significant decrease in coolant level indicates a problem.
If you have any questions, let me know.
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Drive safe and be warm.
Posted on Feb 02, 2009
SOURCE: Heater Core Leaking
you could quick fix! but you will have no heat, 1st under the hood, look at the back of motor, follow all you're radiator hoses, take two hoses off the heater core stick a pipe that is big enough then clamp the pipe down. to both sides of hoses to the pipe you will eventually have to replace heater core!!
Posted on Mar 24, 2009
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