SOURCE: 2002 jeep grand cherokee heater doesn't blow hot
If ythe heater core is not bad then I would replace the thermostat, this will stop the warm coolant running up to your engine go to the heater core.
SOURCE: PROBLEM WITH MY HEATER/AIR CONDITIONING BLOWING
Remove the glove box, you will see the relays, sounds like a bad ground.
SOURCE: need to replace ac blend door motor inside dashby
the bummer is removing instrument panel. big job.
A/C Electronic Blend Door Actuator
Removal
Item
Part Number
Description
1
18471
Heater Air Plenum Chamber
2
42141-S8
Screw (4 Req'd)
3
—
A/C Electronic Blend Door Actuator
4
—
A/C Air Temperature Control Door Shaft (Part of 18471)
5
19D842
A/C Air Temperature Control Door
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SOURCE: water leak on fwd passenger side after every rain storm
If your car has a sunroof, there are drains from the front corners of the sunroof, and they drain down the sides of the windshield pillars, and then empty out on the ground.
What I would do is open the surnroof, and pour water into the front corners, and then oobserve where the water drains out. If you have a difference in water drainage between the left and the right sides, I would think that you may have loose sunroof drain. They commonly come loose at the sunroof corners. This will allow the water to pass down the windshield pillar, and onto the floor.
Also, I would check the condensate drain tube for blockage. Pull back the carpet, under the glove box, and fins a black hose that pokes thru the firewall. Pull it out, and see if it is blocked internally. If this tube is clogged, water will build up in the heater box, as the black tube is the drain for the heater box.
One of the two above solutions will cure your problem. I see both quite often.
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SOURCE: heater blows cold air. I have replaced thermostat,
Not an expert by any means, but i know my ranger.. I had a small leak at the top of my radiator that still cooled the engine but didnt have enough pressure to get to the heater. The heater hoses travel up over the engine and just were not gettin anything to my heater core. That or make sure the heater control valve is operating.
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