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Check the fluid level in your radiator. A low level can cause this. If you have checked your fluid level and everything is still not OK, then I suggest you change your heater block, it may be blocked or damaged.
I agree it is probably the heater core. It is located behind the dash on the passenger side. This means it will be a fairly long process( removing the dash assembly, etc.). High labor cost at a shop for a $100 part. There are numerous guides online if you feel up to the task.( Google search: how to replace a heater core in a Jeep wrangler) probably a weekend project.
What else can I help you with?
Why don't you have any heater in your 1992 Jeep Wrangler?
Heater works fine in my Wrangler! Check the thermostat or the hoses or heater core might be plugged. The thermostat is easiest ^ cheapest to change so start there.
Your truck does not produce heat its warm at first then cools down you already replaced the thermostat?
Try flushing heater core Try flushing heater core
What can you check as to why 99 Oldsmobile Silhouette will not blow hot air for heater Changed and flushed collent and replaced thermostat already Switches seems fine?
How did you change the thermostat?
Why is the heater in your 1997 jeep wrangler blowing cold air?
it could be a couple of things you could have a bad thermostat or a bad heater core
1993 Wrangler new water pump new heater coil new radiator getting poor heat from heater?
Your heater core is plugged and you need a thermostat.
1993 jeep with no heat Works once in a while usually going up a hill already replaced the thermostat. What else should I try?
flush out heater hoses
My heater will blow but not hot ive replaced the thermostat?
Check into the temperature control valve--this is different than the thermostat.
What could be wrong with the heater in 2000 Dodge stratus that blows cool air you already replaced the thermostat?
Low coolant? Wrong thermostat temperature range? Heater core plugged,restricted or airbound? Water pump not circulating coolant? Temperature control cable not adjusted properly?
Your 2000 wrangler sport is running hot and have already flushed system replaced the radiator thermostat changed the oil and the air filter and my oil pressure gauge is going all the way to 80.?
I did a manual flush on the heater core with water from a hot water tank. I flushed a ton of crap out but did have to end up replacing the water pump.
How can I test a hot water heater thermostat to ensure it is functioning properly?
To test a hot water heater thermostat, you can use a multimeter to check for continuity in the thermostat. First, turn off the power to the water heater. Then, remove the access panel to expose the thermostat. Use the multimeter to test the thermostat's terminals for continuity. If there is no continuity, the thermostat may be faulty and needs to be replaced.
Where is the thermostat on a 1992 Lincoln Town Car?
The heater cor was replaced but it is still not getting warm
How do you calibrate the thermostat on the wall not on the heater itself for in wall forced air heaters?
If a thermostat is not working properly, you cannot calibrate it. It must be replaced.
