The usual symptom is an inability to effectively control the temperature in your car. Note that this symptom can also be caused by a bad temp control knob, and this is a common failure on Ford trucks. Please check carefully before considering the blend door fix.
The problems with the Cherokee and Wrangler are different than our other kits. First, be sure your Jeep has electronic control and isn’t the “old fashioned” cable link to a slide lever. If there is a little actuator motor on the bottom of the box next to the transmission tunnel, our kit is correct.
The door on these models is a flexible plastic instead of the usual hard plastic with foam sealing. The door has a tiny stop nub inside the box that breaks quickly and the door can move past the stop point and even wedge in the air flow opening. You’re usually OK until the flexible door “wears out” and bends when the motor forces it to the correct stop point. Once the door gets too much flexibility from the constant bending, it twists the axle too far when the computer attempts to calibrate the system and the HVAC controls get “confused” and won’t move the door correctly between hot and cold. The problem isn’t that the door physically breaks like other models, but that it becomes too flexible over time and the computer is expecting a hard stop which doesn’t occur. The fail symptom can be a lack of control over temperature is the door is stuck or just very flakey behavior from a computer that doesn’t “know” whether the door is fully open or closed.
If you remove the actuator motor and turn the blend door axle you can manually switch between heat and AC, but once the door begins to move too far from a broken stop point and an overly flexible door, the computer can’t properly modulate the door.
Our kit replaces the plastic door with steel that won’t flex and will properly stop on the frame of the door openings. This allows the computer control system to properly calibrate and operate correctly again. It’s a fairly simple repair to a very annoying problem.
Our goal is to make sure that every installation is successful. To date we have achieved 100% success and have no intention of letting up. Heater Treater will solve the problems with the blend door and is over-engineered to outlast your Jeep.
“This Has Been The Best Internet Purchase We Have Ever Made”
“I ordered Heater Treater for my ’02 Jeep Grand Cherokee with a little doubt in my mind. Once we got the part the instructions seemed a bit more complicated than we expected. When we were ready to attack the project we watched the videos…… WOW. With the video you almost don’t need the instructions at all. Worked just like you said it would!!
This has been the best internet purchase we have ever made. We will be telling everyone we know about your product. Easy installation with exceptional results!!!! Definitely worth the price, saved us at least $1500. Thanks!”
- Lauriel
The Best $120 I’ve Spent All Year”
“All,
Not only was the Blend Door Fix super easy to install, but it is rock solid, and it works a treat. Definately the best $120 I’ve spent all year!
I was dreading another Winter without a heater so much that I was actually thinking about selling the Jeep and buying a new car….so at the very least you’ve saved me $1000+ for a repair by a mechanic, but you’ve quite possibly saved me about $500 in car payments per month for the next 60 months!”
Many thanks!
Damien
“My Wife Thinks I’m A Hero”
“Thanks for an excellent product. The installation is as easy as your website says it is. It took 1.5 hours from start to finish. If I had to do another, I could do it in about an hour. I used a dremel with a flexible extension and a cutting drill bit, not the cutting wheel. I drilled out the pattern first and then cut. The directions are well thought out and I wouldn’t change a thing.
I called a Jeep dealer a month ago; they gave me a price over $2k.
This is my wife’s car and she thinks I’m a hero for getting her heat because it’s getting cold in NJ now.
Thanks again.
Steve
“Ford Wanted To Charge Me $1600. No Way…”
“I ordered your product for my daughter’s F-150, followed the installation procedures and got the A/C working great. Ford wanted to charge me $1600, no way I was going to spend that money, all Ford had to do is design the system with an access panel to replace the blend door in case of a failure.
You have a great solution, it works great, it took me a couple of hours to finish, half of that time was spent removing that silly diverter vent, once that was out everything went very smooth………..It felt so great.
Thank you so much.”
Roland
“Your Directions Are Flawless”
Thank you for sending me the unit so fast. I successfully put it in my Jeep today. Your directions are flawless. They are easy to follow and very detailed, you really put a lot of thought into them. I found the pictures very helpful.
My neighbors came over and were very impressed with your product. They were also impressed with the way I was able to install it myself and save the money and hassle of having to have someone else do it.
If you ever need another testimonial I would love to give one for you.
You have created a great product. I can see someone making a business of installing your product for a lesser cost for those who are not mechanically inclined to do the installation themselves.
Thank you for all of your help. I truely appreciate it.
I can now keep warm because of you.
Thank you and happy holidays :)”
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