99.99% of the time this is the common blend door failure. You can go to 100% by reading the HVAC dianostic codes. With the HVAC system on, hold down the AC and re-circ buttons simultaneously while turning the drivers side temp knob one click clockwise. Codes will flash on the temp LCD display. If you see 54 and/or 56 you have found the problem. More information and pictures is available on heatertreater.net.
This is the classic symptom for blend door failure on the Grand Cherokee. Check heatertreater.net for diagnostic information and an inexpensive fix.
The blend air door has broken inside the dash. Very big job, the dash and ac box have to be removed and dissassembled. We see this alot at the dealer where I work.
The heater blend doors have failed. It is likely that the drivers side has failed shut whilst the other side is stuck partly open.
A broken blend air door is the most likely cause on a Jeep Grand Cherokee.
heater hoses might have been disconected
625
625 @ zero Fahrenheit
900-1200
A broken blend air door is the most likely cause on a Jeep Grand Cherokee.
get a new car. or better a new air con stupid
It is probably your thermostat. That will make cold air come in. It's probably stuck open. The part is only about $4.00 at Auto zone.
Hi, first thing to do is get it properly charged. Sounds low on freon. That's where to start..............Mike
make sure both knobs are all the way up on red for heat...
There is a differential vane in the AC ductwork that regulates the flow of hot and cold air into the two halves (driver/passenger) of the system. Failure of this mechanism is one of the more notorious problems with the LS.
The blower motor is beginning to fail. Bearings, bushings, or brushes are probably worn.
One of the temp blend door actuators has failed.
can you please clarify what you mean, do you mean that the front heater blows cold but the rear blows hot or do you mean that when the heating is on cold it blows hot? many thanks paul
When the Cold Wind Blows - 2012 is rated/received certificates of: Singapore:PG
a/c blows warm air when idles cold when running
ruud furnace only blows cold air, no heat