How does the blend door work on a Jeep Cherokee?
– The Cherokee is built with a Blend Door to control the heater and AC function. The blend door controls air flow through either the AC evaporator or the heater coil, or any combination in between. The doors are controlled by a stepper motor.
What should I do if my blend door fails?
The standard fix for the blend door failure is to remove the heater box and replace the plastic door. If the instructions with other fixes start out with “remove the heater box”, be ready for considerable work.
Why is my Jeep JGC blend door not working?
What I discovered was this is a very common problem with my model of JGC (1999-2004). I love my Jeep, but the person that designed this blend door actuator system needs to find new work. The design is inherently weak, and relies on a calibration phase that puts intense pressure on the weakest points in the system.
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.
Is there a blend door fix for the Jeep Grand Cherokee?
Both fixes are rock solid and will outlast your GC. Blend Door Installation We have three different blend door kits for the GC. The video shows the process for the installation through the glove box for the standard HeaterTreater and the Dual Control Heatertreater.
How to turn a blend door on and off?
Insert actuator shaft into A/C air temperature control door and secure A/C electronic blend door actuator to A/C evaporator housing with four retaining screws. Install electrical connector to bracket on A/C electronic blend door actuator. Install instrument panel insulator and console panel if equipped. Connect battery ground cable.
How does a dual control heatertreater fix a blend door?
Dual Control HeaterTreater – Replaces both blend doors and retains dual control functionality. The fix is done through the glove box and doesn’t require removal of the dash or plenum box. A second motor is added on the front side of the box to control the back (passenger) door.
How to manually turn a blend door actuator?
Install electrical connector to bracket on A/C electronic blend door actuator. Install instrument panel insulator and console panel if equipped. Connect battery ground cable. Thanks for instruction.
How to regulate between heat and AC in Jeep Cherokee?
You can grasp the axle with your fingers and feel the extents of movement of the door by turning the knob. You should be able to manually regulate between heat and AC by turning the axle. The door should hit a hard stop point when you turn it to heat or AC and not have any play beyond that point.
How to fix a door failure on a Jeep Cherokee?
Push the new door onto the connector and slide the connector pin all the way into the installed door. Install the second door, sliding the connector pin into the far side of the second door.
– The Cherokee is built with a Blend Door to control the heater and AC function. The blend door controls air flow through either the AC evaporator or the heater coil, or any combination in between. The doors are controlled by a stepper motor.
How to fix a Jeep Cherokee heat and AC?
The pictures show the hardware provided for the fix. All work is done from the foot area of the passenger side of the Jeep, with a Dremel cut in the bottom of the heater box…no removal of the dash panel or evacuating the AC system and draining the radiator.
When does the Jeep Grand Cherokee a / C switch to defrost?
When climbing a hill or under heavy acceleration wile AC is blowing it will switch to the defrost. We’ve had this Jeep a little over a year 1. AC would switch to defrost upon high acceleration then resume & return to vents. Two months ago it went to defrost & didnt resume to vent.
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.
The pictures show the hardware provided for the fix. All work is done from the foot area of the passenger side of the Jeep, with a Dremel cut in the bottom of the heater box…no removal of the dash panel or evacuating the AC system and draining the radiator.
How long does it take to replace blend door?
The work could easily be done by any local independent garage. Product returns are accepted within two weeks for a full refund (minus shipping). The standard fix for the blend door failure is to remove the heater box and replace the plastic door.
What does a broken blend door feel like?
If the axle is broken or feel disconnected from the door, this is a definitive indication of a broken blend door. It’s hard to explain exactly what it feels like, but you should be able to switch from AC to heat and feel a solid stop at the max AC and heat positions.
The work could easily be done by any local independent garage. Product returns are accepted within two weeks for a full refund (minus shipping). The standard fix for the blend door failure is to remove the heater box and replace the plastic door.
If the axle is broken or feel disconnected from the door, this is a definitive indication of a broken blend door. It’s hard to explain exactly what it feels like, but you should be able to switch from AC to heat and feel a solid stop at the max AC and heat positions.
What are the fail codes on a Jeep Grand Cherokee?
20, 52 – Re-circ door travel too large (check our re-circ door listing) 54 and 56 are the most common fail codes and indicate a broken blend door. The system may still be marginally functional, but it will totally break soon. If any of the codes are present, the Heater Treater is the solution.
How to fix second door on Jeep Cherokee?
Install the second door, sliding the connector pin into the far side of the second door. Align and snap in the near connector. Reinstall the near actuator and test.
What I discovered was this is a very common problem with my model of JGC (1999-2004). I love my Jeep, but the person that designed this blend door actuator system needs to find new work. The design is inherently weak, and relies on a calibration phase that puts intense pressure on the weakest points in the system.
20, 52 – Re-circ door travel too large (check our re-circ door listing) 54 and 56 are the most common fail codes and indicate a broken blend door. The system may still be marginally functional, but it will totally break soon. If any of the codes are present, the Heater Treater is the solution.
Install the second door, sliding the connector pin into the far side of the second door. Align and snap in the near connector. Reinstall the near actuator and test.
Is there a heater on my 1999 Jeep Grand Cherokee?
1999 Grand Cherokee that had no heat on the passenger side. The man we bought it from mentioned it was a $150 fix. He told us about your product and we searched you out on the net. It works great! * Chrysler Group LLC has neither licensed nor endorsed JGCParts to sell goods and services for Jeep® vehicles.
How do you install a Grand Cherokee door?
Install the cutout plastic housing back into place and seal with provided foam tape. Install drive motor and screws (or clip). Close glove box and reinstall rubber stop tabs. Lifetime warranty against defects or failure of our product.
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.
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.
Why is my Jeep Grand Cherokee heater not working?
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