answersLogoWhite

0


Best Answer

I have noticed that this problem only occurs with the headlights on. I am almost 100% sure that the problem is with the placement of the cabin temperature sensor placement (it is located between the two hot/cold blend knobs on the unit.

My theory is; when the lights are on, the incandescent bulb produces a high amount of heat that gets trapped inside of the control head. if you physically touch the temperature sensor, you will notice it gets very hot. Im sure that this would make the unit "think" it is hot inside the car and adjust the temperature to cool it off, while in actuallity, it is freezing inside the car.

I have tested it (somewhat). I held an ice cold beverage in my hand until my hand was ice cold, then i touched the sensor. It must've noticed the temperature change in the sensor itself, and suddenly, the heat kicked back on. Unfortunately, it didn't last very long.

Now, this is just my hyposthesis, however i think i will disassemble the control head and replace the incandescent bulb with LED's (which produce little to no heat at all). Hopefully this will solve the problem (I'll post back if it works!)

User Avatar

Wiki User

โˆ™ 2008-06-06 12:35:08
This answer is:
๐Ÿ™
0
๐Ÿคจ
0
๐Ÿ˜ฎ
0
User Avatar
Study guides
๐Ÿ““
See all Study Guides
โœ๏ธ
Create a Study Guide

Add your answer:

Earn +20 pts
Q: Why would your 2000 Jeep Grand Cherokee Ltd heater auto temp control suddenly blow cold air after 30-45 minutes of operating normally?
Write your answer...
Submit
Related questions

When operating normally from the primary control panel if the primary generator shuts down?

backup generator


How can an operating system to control a network?

control


Where is the heater control valve located on a 2002 Jeep Grand Cherokee?

There isn't one. If your heater is not operating properly you most likely have a broken blend door inside the dash.


Where are the Copy Cut and Paste commands located in windows?

If you mean windows the operating system, it depends on the program, but normally the key combinations are control-c for copy, control-v for paste, and I forget the one for cut. If you mean windows as in windows on a screen, normally in the toolbars if available and/or in menus. Both of these are normally towards the top of the screen.


Can air conditioner clutch engaging incorrectly stop a jeep Cherokee to die suddenly?

more than likely your idle air control motor(IAC motor)is not responding properly causing the engine to stall


Define how operating system is a control program?

operating system is a control program as it allow multiple task to performed on same window.


The airspace normally extends from the surface up to approximately 2500 feet AGL and surrounds those airports with an operating control tower that does not provide radar service is?

Class D


Where is the engine control module located on a 1993 Jeep Grand Cherokee?

The 1993 Jeep Grand Cherokee engine control module is located on the firewall in the engine compartment. The engine control module will be on the passenger side of the firewall.


What is a power skid?

In the context of operating a motor vehicle, a power skid is what results when a driver presses down too hard and suddenly on the accelerator. A simple skid is when someone losses control over the direction in which their car is moving.


What is the heart of operating system and control and control the moist critical processes?

kernal


Why is the Operating System important?

to control the system


What does an operating system control?

The hardware of a computer.


Does an operating system control a computer?

Yes


How does the operating system control hardware?

cos


What is control programs in operating system?

anilklumar


What is the black vacuum hose on your Jeep Cherokee coming from the ac control?

That is the vacuum supply for the HVAC control.


Are heart muscles under your control?

No, they are involuntary muscles, and will keep operating with out our control.


What is the name of the operating systemthat was used to control the first apple computer?

Based on the Unix Operating System.


What operating systems used to control and coordinate computers that are linked together?

NOS (Network Operating System)


How does an operating system take control over a computer system?

The operating system is always in control of a computer system. When the hardware loads the software -- boots up -- the software is the operating system. The operating system manages all program access to all hardware in the computer system.


Does the throttle control sensor have anything to do with the cruise control on a 2000 grand Cherokee?

Yes, it can cause the cruise to surge.


1995 grand Cherokee tcm?

TCM Transmission Control Module


2000 jeep Cherokee sport heater control valve diagram?

You can obtain a 2000 Jeep Cherokee heater control valve diagram from most Jeep or Chrysler dealerships. The heater control fell diagram can also be found at most auto-parts stores.


What if my traction control system in my highlander stays on and beeps?

It is a warning that the skid control system is not operating, or not operating properly, and may become dangerous in slippery weather if the brakes are sharply applied.


Which is normally in control sympathetic or parasympathetic?

parasympathetic