How to fix AC and heater in 1999 Jeep Grand Cherokee?
Clarify it by editing! The 1999-2004 Jeep Grand Cherokee has a common failure where the blower fan wire adapter overheats and melts. Use this guide to fix and repair this connector and get your AC and Heater working again! No parts specified. Place the car in park, activate the parking brake, and leave the car running.
Where is the blower motor on a Jeep Grand Cherokee?
The blower motor is located under the dash on the passenger side of the vehicle. For easier access to the wiring push the seat back, and place your tools on the floor of the car .
What to do if your Jeep Grand Cherokee fan does not turn on?
If the fan does not turn on, the damage may not be fixable without purchasing new parts. For your safety do not grasp any wires you can not see. Do not attempt to grasp any wires that are not covered in insulation and/or electrical tape. Turn off the ignition on the vehicle and proceed with the following steps.
How to remove AC adapter from Jeep Grand Cherokee?
There are two screws holding the adapter in place. Using a Phillips head screwdriver, remove both screws in order to remove and gain access to the adapter. The two screws are identical. Be careful not to lose them. Be sure the car is completely off before unscrewing anything.
Clarify it by editing! The 1999-2004 Jeep Grand Cherokee has a common failure where the blower fan wire adapter overheats and melts. Use this guide to fix and repair this connector and get your AC and Heater working again! No parts specified. Place the car in park, activate the parking brake, and leave the car running.
Where is the blower motor adapter on a Jeep Grand Cherokee?
The blower motor adapter is a bundle of three wires located on the left side. While the vehicle’s ignition is on, push and pull gently on the wire connection. If the blower motor turns on, you have identified the problem and following this guide will help you fix it
If the fan does not turn on, the damage may not be fixable without purchasing new parts. For your safety do not grasp any wires you can not see. Do not attempt to grasp any wires that are not covered in insulation and/or electrical tape. Turn off the ignition on the vehicle and proceed with the following steps.
There are two screws holding the adapter in place. Using a Phillips head screwdriver, remove both screws in order to remove and gain access to the adapter. The two screws are identical. Be careful not to lose them. Be sure the car is completely off before unscrewing anything.
Why does the a / C quit blowing on my 1999 Jeep Grand Cherokee?
The A/C (and heater) quit blowing on my Dad’s 1999 Jeep Grand Cherokee a while back so I took a look at it. The fresh air/recirculate blend air door seems to have broken up in the air duct causing it to suck up against the blower intake and stop all the air flow.
Why does my Jeep Grand Cherokee have no heat?
How to Fix a No Heat Problem on a Jeep Grand Cherokee. Your Jeep heater is blowing cold air and you’re not sure why. Two possibilities exist. One is a stuck thermostat. The other possibility is a bad heater core. Replacing the thermostat is fairly easy. The heater core is another story.
Why is my Jeep heater blowing cold air?
Your Jeep heater is blowing cold air and you’re not sure why. Two possibilities exist. One is a stuck thermostat. The other possibility is a bad heater core. Replacing the thermostat is fairly easy.
The A/C (and heater) quit blowing on my Dad’s 1999 Jeep Grand Cherokee a while back so I took a look at it. The fresh air/recirculate blend air door seems to have broken up in the air duct causing it to suck up against the blower intake and stop all the air flow.
Why does my 99 Jeep Grand Cherokee have no heat?
My 99 jeep grand cherokee has no heat, the air blows out but blows out cold air. It actually blows out whatever the temperature outside is. If it is hot outside I get hot air if it is cold I get cold air. Please help, no one can tell me what is wrong with it helpful? First feel the heater core hoses with the vehicle hot. They should be hot.
How to fix the AC on a Jeep Grand Cherokee?
Remove the refrigerant using an AC machine. Remove the heater hoses and ac lines at the firewall. The spring lock ac line connectors can be disconnected easily with a spring lock tool. Remove the 10 mm bolt near the heater hoses in engine compartment that goes through the firewall to the evaporator case. 2.
How to fix no air flow Jeep Grand Cherokee?
The proper fix would be to disassemble to dash and then the blower and duct assembly out from under the dash in order to replace the broken parts however this simple fix will get the air working again quickly and cheaply. The only thing is you will loose the control to allow in 100% fresh air. Loading…
Where are the wires on a Jeep Grand Cherokee?
Push the seat back, and place your tools on the floor of the car. There are a few wires hanging below the passenger side dash. The blower motor adapter is a bundle of three wires located on the left side. While the car is on push and pull gently on the wire connection. If the fan turns on you have identified the problem and we will fix it.
The blower motor is located under the dash on the passenger side of the vehicle. For easier access to the wiring push the seat back, and place your tools on the floor of the car .
Push the seat back, and place your tools on the floor of the car. There are a few wires hanging below the passenger side dash. The blower motor adapter is a bundle of three wires located on the left side. While the car is on push and pull gently on the wire connection. If the fan turns on you have identified the problem and we will fix it.
Why is the air blower on my Jeep not working?
I will start the Jeep and the air blows fine, then without rhyme or reason it completely stops (there is no specific duration between work/failure). Depending on the length of the trip, it may come back on again. I replaced the blower motor resistor and I thought that fixed the problem, but unfortunately it did not.
Why does my Jeep Grand Cherokee Fan quit working?
In this one we take a stab at permanently fixing a common issue with the 1999-2004 Jeep Grand Cherokee. The electric cooling fan will quit working, and your jeep will overheat, due to a failure in the electronic fan control relay. This is a heat related failure and I add a large heat sink and relocate the relay to try and avoid further issues.
Why is my defrost switch not working on my Jeep Grand Cherokee?
Check valves are netorious for failing or leaking. I was able to “stall” the problem by “cleaning” the check valce with wd40 but it is only a short term fix and will only work if the check valve is dirty and not broken.
How much does a Jeep Grand Cherokee AC cost?
This system is operated by engine vacuum and should be inspected for any vacuum leaks if this problem develops. There is also a revised vacuum check valve available to address this concern. The average cost for a Jeep Grand Cherokee AC Diagnosis is between $53 -$67.
Why does my HVAC switch to defrost when I accelerate?
The AC/heater (HVAC) system may unexpectedly switch to the defrost mode when accelerating. This system is operated by engine vacuum and should be inspected for any vacuum leaks if this problem develops.
How long does it take to fix a jeep heater?
If you take the Jeep to a mechanic, expect to spend between four to five hundred dollars to get the heater core replaced. You can, however, decide to fix it yourself. The thermostat takes approximately one hour. For the heater core be prepared to spend at least six hours on this repair job.
How to fix a Jeep Grand Cherokee heater blend door?
Our JGCParts Heater blend door kits will fix your heater or we’ll buy it back. 2004 Jeep® Grand Cherokee®. you receive when you turn the temperature knob on the dash. If you turn the knob for hot air, they move up. If you turn the knob for cool air, they move down. them to fall down in the cold air position.
Why does my 2003 Jeep Grand Cherokee overheat?
i have a 2003 ,overheated. solution: change the fan motor. faulty fan motors due to faulty windings from factory. LISTEN TO THIS IMPORTANT MESSAGE!!!!!!!!!!!!!!!!!! For anyone having overheating problems with their Jeep Grand Cherokees take these necessary steps before taking your vehicle to a dealership………. 1.
How to turn on heat in Jeep Grand Cherokee?
Check for a broken limit pin on the axle and check that you can turn it ~50 degrees of movement between the two stop points. Start the GC and turn on the AC. You should be able to manually switch between heat and AC by turning the axle with your fingers.
What causes dual zone AC on Jeep Grand Cherokee?
Jeep Grand Cherokees with dual climate control (for the AC / Heater system) that have incorrect air temperature blowing on either the passenger or driver’s side is usually one of two things. One of the blend door actuators (motors), or the the dual zone blend door assembly could have a broken door.
Where is the air blower on a Jeep Grand Cherokee?
1. Blows hot on drivers side with AC on. 2. Blows hot on passengers side with AC on. 3. Blows cold on drivers side with heat on. 4. Blows cold on passengers side with heat on. 5. Hear blower but no air blows through any vents. 6. Airflow is present but it is not blowing cold.
Why is there no air in my Jeep Grand Cherokee?
Found broken vacuum hose under battery platform going into reservoir, replaced that (my cruise control started working). Cleared check valve in vacuum line near firewall, got a bit of air blowing but still not enough. Finally after reading your idea here, pulled the blower motor to check direction of flow.
In this one we take a stab at permanently fixing a common issue with the 1999-2004 Jeep Grand Cherokee. The electric cooling fan will quit working, and your jeep will overheat, due to a failure in the electronic fan control relay. This is a heat related failure and I add a large heat sink and relocate the relay to try and avoid further issues.
Why does my Jeep Jeep blower keep failing?
Most of the time the problem is a melted connector on the blower motor controller, but you changed that one already and would have seen the melted connector. When it fails again, i would try and wiggle a bit with the wiring on the controller and the blower motor itself. Could be a bad contact or an internally broken wire.
What to do if your Jeep Grand Cherokee heater is not working?
If the blower fan turns on and you don’t have any leaks under the dash of your Grand Cherokee, check the radiator’s coolant level and top it off if it is low. Blower Fan. The blower fan is responsible for moving the heat from the heater core to the vents. If it is not working then your heater settings will not work.
I will start the Jeep and the air blows fine, then without rhyme or reason it completely stops (there is no specific duration between work/failure). Depending on the length of the trip, it may come back on again. I replaced the blower motor resistor and I thought that fixed the problem, but unfortunately it did not.
Is the a / C heater on my 2004 GC failing?
My 2004 GC’s a/c – heater blower is failing intermittently. I will start the Jeep and the air blows fine, then without rhyme or reason it completely stops (there is no specific duration between work/failure).
What makes a Jeep Grand Cherokee air conditioner work?
The only thing that the air conditioning system has in common with the heater is that they both use the climate controls and the blower motor. It is entirely possible for your Grand Cherokee’s heater to work just fine even when the air conditioner is not blowing cold at all.
Why is my Jeep Grand Cherokee heater not working?
While there are a variety of reasons your Jeep Grand Cherokee heater is not working, the most common 3 are a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor.
What should I do if my Grand Cherokee AC is not working?
Start by inspecting the condition of the cabin air filter on your Grand Cherokee. Instead of changing it directly, it is often recommended to first clean the pollen filter. This can be done, for example, with a vacuum cleaner or a compressed air system, removing at least a large part of the visible dirt particles.
The blower motor adapter is a bundle of three wires located on the left side. While the vehicle’s ignition is on, push and pull gently on the wire connection. If the blower motor turns on, you have identified the problem and following this guide will help you fix it
What to do if your Jeep Grand Cherokee AC unit overheats?
The 1999-2004 Jeep Grand Cherokee has a common failure where the blower fan wire adapter overheats and melts. Use this guide to fix and repair this connector and get your AC and Heater working again! No parts specified. Place the car in park, activate the parking brake, and leave the car running.
What to do if your Grand Cherokee has no heat?
Install new heater core and reattach with screwdriver. Reassemble everything in reverse order of how it was removed. If your problem is lack of heat or A/C control, check the blend door, which is a common problem in the Grand Cherokee. Reuse of your coolant is acceptable if the coolant is still clean and not old.
Can a 1998 Jeep Grand Cherokee be changed?
Changing the heater core in a 1998 Jeep Grand Cherokee yourself can save you quite a bit of money. The act of changing the heater core itself can be done fairly quickly, but what has to be done to get to that point is what takes most of the time in this project.
How do you install a new Cherokee heater?
Grease them with a gasket sealer to ensure a tight connection with the new heater hoses. Slide the clamps over the new Cherokee heater hoses, and screw the hoses onto the fittings. Check both ends of the hose to make sure you have a firm, snug connection. Use pliers to tighten the fittings if necessary.
If your Jeep® Grand Cherokee® heater only blows cold on one side all of a sudden, or seemed to just quit producing heat one day – you most likely suffer from blend door failure. on where you have the temperature setting knobs positioned. These little plastic flap doors hide behind your glove
What kind of heater does a 1999 Jeep Grand Cherokee use?
JGCParts Heater Dual Zone blend doors for all 1999 – 2004 Jeep® Grand Cherokee®. The easiest, cheapest way to fix and restore heat to your Jeep. 1999 – 2004 Grand Cherokee®. The sure way to fix and restore heat to your Jeep®. Make the smart choice.
Is there a dual zone heater treater for Jeep Grand Cherokee Limited?
Heater Treater’s Dual Zone Blend Door fix is for Grand Cherokee Limited’s with dual zone temperature controls. You can read the fail codes on the system by following this procedure:
Check for a broken limit pin on the axle and check that you can turn it ~50 degrees of movement between the two stop points. Start the GC and turn on the AC. You should be able to manually switch between heat and AC by turning the axle with your fingers.
https://www.youtube.com/watch?v=zNZ2Py4D_f4
Why is my Jeep Cherokee heater not working?
What are common reasons my Jeep Cherokee has heater problems? While there are a variety of reasons your Jeep Cherokee heater is not working, the most common 3 are a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor.
How can I Fix my Jeep Grand Cherokee heater treater?
Heater Treater’s Dual Zone Blend Door fix is for Grand Cherokee Limited’s with dual zone temperature controls. You can read the fail codes on the system by following this procedure: Turn the ignition switch on and turn on the AC system. You should see a temp display for the two sides.
How does the Jeep Cherokee a / C heater motor work?
A Jeep Cherokee A/C blower motor is a vital part of your Jeep’s HVAC system. The blower motor resistor controls the speed of your fan (blower motor). When the fan works at high speed, but not in some lower speeds, this is frequently a result of a faulty resistor.
Why does my Jeep Grand Cherokee have no air flow?
The fresh air/recirculate blend air door seems to have broken up in the air duct causing it to suck up against the blower intake and stop all the air flow.