No heat in my 1995 Jeep Cherokee
Hello I have no heat in my 1995 Jeep Cherokee. I have already replaced thermostat new water pump, flushed and back flushed heater core it had good and clear water running out. I got rid of my heater control valve and just ran my heater hoses directly to the heater core. I am at a loss on this issue with no heat. I have also flushed out radiator and all has plenty of coolant. I just don't know what could be the problem I've done almost everything i can think of.
My car has 146320 miles.
My car has an automatic transmission.
Experienced mechanics share their insights in answering this question :
Hello – to resolve your "no heat" issue, first check that the engine is running at design temperature (center of the gauge), or 190-205 degrees Farenheit. If engine is up to temp, grab the heater hoses (carefully) inside the passenger compartment. If they’re hot, then there is likely an air blend door problem inside the air box under the dash preventing hot air from reaching the vents. If the hoses are not hot, there is a coolant flow problem in the heater core. For assistance with this problem, I would recommend a heater inspection by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.
How to Identify and Fix Common car Problems ?
Our sources include academic articles, blog posts, and personal essays from experienced mechanics :
The most common reasons a Jeep Cherokee heater isn`t working are a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor. Search our network of RepairPal Certified shops near you to speak with a technician about your issue. Oops!
If the engine temperature is warmer then normal but still have no heat. This may be caused by a stuck closed thermostat or other restriction in the cooling system. If this is the case the thermostat will have to be replaced. This can lead to engine damage if left alone.
Driving with a malfunctioning heater control valve can present major issues. Since it is a part of your vehicle`s climate control system, it may cause problems in keeping your windows clear which can affect your visibility.
Some heater control valves will be located in the engine compartment at or near the passenger side firewall. Others are located behind the dashboard near the passenger footwell. Refer to the factory service manual for your vehicle to determine the exact location.
If your coolant level is a-okay, but your car heater is blowing cold air and your engine is overheating, then you have a clog in your cooling system. Conversely, if your engine temperatures are unrealistically low after a drive, your thermostat is likely the culprit.
Common Car Heater Problems
The heater switching system might be faulty. The cabin air filter might be choked, restricting the airflow through the heater core. The thermostat valve might not be working right. The heater core might be clogged.
Check the temperature of the valve`s outlet hose (between the valve and the heater core)—it should feel nearly as hot as the valve`s inlet hose. If the outlet hose is noticeably cooler than the inlet hose, the valve is likely stuck closed, preventing coolant from circulating through the heater core.
A faulty heater control valve may not be able to properly control coolant flow to the heater, which may result in problems with operating the heater. The heater may produce hot air, but only at certain times, such as at idle, and the hot air may come and go.
Temperature regulators and temperature control valves (sometimes referred to as TCV) are designed to control the temperature of a process by controlling thermal fluid pressure or flow in compressors, tank jackets, heating coils, or other heating elements.
If you turn on the system and don`t feel any warmth, it`s possible that the heater core is not functioning properly. Other signs of a failing system include a coolant leak, a sweet, syrupy smell inside the cabin, foggy windows, and an overheating engine.
Faulty Wiring or Blown Fuses
Similar to your broken HVAC controls, your car`s wiring could be broken or have a short in it. This would mean the heater isn`t triggered when the driver commands it to function.
Look for broken parts, split hoses, and leaks. Obstructions and leaks are common issues that cause low heat delivery to the cabin of your Jeep. Repair or replace any broken or damaged parts. Do a simple coolant level check of your reservoir and radiator when your Jeep is completely cooled.
Faulty heater cores can lead to overheating, and driving with one can be risky. Overheating can cause engine damage, so it`s important to be careful if you`re driving with a car that has a faulty heater core.
The most common reasons a Jeep Cherokee is overheating are a coolant leak (water pump, radiator, hose etc.), the radiator fan, or a failed thermostat.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
No heat in my 1995 Jeep Cherokee
ANSWER : Hello – to resolve your "no heat" issue, first check that the engine is running at design temperature (center of the gauge), or 190-205 degrees Farenheit. If engine is up to temp, grab the heater hoses (carefully) inside the passenger compartment. If they’re hot, then there is likely an air blend door problem inside the air box under the dash preventing hot air from reaching the vents. If the hoses are not hot, there is a coolant flow problem in the heater core. For assistance with this problem, I would recommend a heater inspection by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.
Read Full Q/A … : No heat in my 1995 Jeep Cherokee
A/C and heat are not working properly. Car blows heat in summer and cool air in winter.
ANSWER : Common causes of no cabin heat include malfunctioning blend door(s) (part of the in-dash ventilation network), a faulty or stuck heater control valve, a plugged heater core, stuck open engine cooling thermostat, collapsed hoses, and low coolant level. The cost to resolve the problem depends on which of the foregoing faults is the cause. If you desire a diagnostic to determine exactly why there is no cabin heat, please request a non functioning cabin heater diagnostic and the responding mechanic will come right to your location and get this resolved for you promptly.
With regard to your air conditioning system, if merely re-charging the system restored normal operation but the a/c ceased to function after a month or so, that scenario typically suggests a leak. Some leaks are really cheap to repair, like if a couple o-rings need to be replaced in system piping but if the leak is at the compressor shaft seal, that repair is more costly. It is not expensive to find the leak and diagnose the system and once the leak is found the mechanic can let you know of the exact cost to repair the leak and re-charge the system. If you desire that service please request an a/c system diagnostic – suspected refrigerant leak and the responding certified mechanic will get this taken care of for you. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you
Read Full Q/A … : No heat in my 1995 Jeep Cherokee
Vehicle at running temp, turn on heat, no heat – stomp on gas, there is heat – ??? 2004 Jeep Liberty
ANSWER : Hello – regarding your lack of heater function unless the engine is revved up a bit, you have a coolant flow issue. This could be caused by a worn water pump (engine might be running warmer than normal?), a partially blocked heater control valve (adjustment problem or failed heater control switch), or clogged cooling system that simply has poor flow. I would recommend an inspection of the heater & cooling system by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.
Read Full Q/A … : No heat in my 1995 Jeep Cherokee
I have a 2000 jeep grand Cherokee limited 4.7L V8. I was gone for a month in a half tried starting my jeep up yesterday and nothin
ANSWER : It may be normal engine electrical drain on the battery if the vehicle sat for a month or more. Once the battery is recharged fully then you can see if it will idle again. Just jumping off and only running a few minutes may not charge the battery enough to let it idle on its own. You should use a battery charger to recharge battery and retest it to see if it still stalls. You may have a bad battery and need to relearn the idle. If it still stalls then the idle control valve may be stuck closed and need to be replaced.
Read Full Q/A … : No heat in my 1995 Jeep Cherokee
2000 Jeep Cherokee overheated and won’t start
ANSWER : Hi there. If the vehicle overheated, and you noticed a lot of coolant on the ground, it’s quite possible that either the radiator broke, a coolant hose broke or the radiator cap was damaged. When this happens, a lot of coolant spills on your hot motor (which is the odor you are smelling). This can also cause damage to critical electrical parts that help the engine start and run. It’s probably a good idea to have a professional mechanic come to your location and complete a car is hard to start inspection, so they can determine what is damaged and needs to be repaired to resolve your problems. Without knowing what is damaged, it’s hard to provide an estimate for repairs.
Read Full Q/A … : No heat in my 1995 Jeep Cherokee
Heat not working on passenger side. Jeep Grand Cherokee
ANSWER : Hi there – these events are most likely not at all related. The lack of heat on the passenger side only is an issue with the controls or actuators for the heater "air blend doors". These are the air-routing mechanisms inside the heater box in the passenger compartment. The failure of the rear blinker light may only be a burned out bulb. I recommend a heater inspection and a turn signal inspection performed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.
Read Full Q/A … : No heat in my 1995 Jeep Cherokee
Heat inside car stays warm for minute then blows cold until I turn heat off for a minute and try again.
ANSWER : Hi there. The engine always at operating temperature leads me to believe, the thermostat is not the cause, for no heat inside the vehicle. There are several possibilities for no heat inside, the heater control valve is malfunctioning, the heater core is restricted, the temperature blend door actuator is malfunctioning. Replacing components without diagnoses, can be expensive and time consuming without resolution. I recommend having your vehicle’s inoperative heater be diagnosed and repaired by a certified technician, such as one from YourMechanic.
Read Full Q/A … : No heat in my 1995 Jeep Cherokee
Jeep is having a hard time starting. 2004 Jeep Grand Cherokee
ANSWER : Hi there – your symptoms suggest a fuel supply issue, quite likely a fuel pressure check valve or fuel pressure regulator issue. Either of these can allow fuel pressure in the injection system to leak down while the vehicle sits. This makes the fuel pump work harder when the vehicle is next started, taking longer to get fuel pressure up to specs. I recommend a hard starting inspection performed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, and give you an accurate assessment of damage and cost estimate for repairs.
Read Full Q/A … : No heat in my 1995 Jeep Cherokee
