1999 Jeep Grand Cherokee Logo
Posted on Feb 09, 2009
Answered by a Fixya Expert

Trustworthy Expert Solutions

At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.

View Our Top Experts

Heating system I have a 1999 jeep gran cherokee with dual climate control system but when i turn on the heater, it blows cold air towards the passenger side but the driver side get heat. Can anyone tells me what's the problem is?

Answer This Question

1 Answer

Anonymous

Level 2:

An expert who has achieved level 2 by getting 100 points
MVP:

An expert that got 5 achievements.
Governor:

An expert whose answer got voted for 20 times.
Scholar:

An expert who has written 20 answers of more than 400 characters.

  • Expert 104 Answers
  • Posted on Feb 09, 2009
Anonymous
Expert
Level 2:

An expert who has achieved level 2 by getting 100 points
MVP:

An expert that got 5 achievements.
Governor:

An expert whose answer got voted for 20 times.
Scholar:

An expert who has written 20 answers of more than 400 characters.

Joined: Feb 06, 2009
Answers
104
Questions
0
Helped
52251
Points
253

This is obviously a heater system control problem, I beleive this system is vaccuum controled with vacuum acuators that open and close doors in response to the climate control system comands.

Listen for the sound of escaping air from under the dash board, esp on the drivers side. Look for any unattached hoses under the dash. From there if you do not see anything obvious, you will have to obtain a schematic of the HVAC system, understand it's opearation and then start testing the vacuum control devices. maybe more than you want to do.

Goos Luck

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

0helpful
2answers

When i cut the heat on....the driver side vent blow cold air and the passenger side blows hot..both of the heating hose are hot...whats the problem in a 1999 buick park ave
think the heater core is partialy blocked ,drain coolant antifreeze and fill with water then add some caustic soda say a half a cupfull then run car for a day or two till the heater starts blowing hot then give a good flush and refill with the antifreeze ,cant say it will work but their is a good chance it will work
Read full answer
Sep 19, 2011 • 2000 Buick LeSabre
0helpful
1answer

Just bought a 99 jeep cherokee, the heater controls sweem to be messed up. when the fan is on hot air comes from the passenger side of the car at the glove box vents, the drivers side blows cold air. ...
automatic climate control with dual controls?

Sounds like a broken drivers side blend door. Very common problem. Jeep has a repair kit that includes a new metal blend door and instructions on how to cut out an access in the HVAC housing. The kit also includes a new passenger blend door. If you want to replace both you',, need to pull the entire dash and then the HVAC housing which is a much better but more time consuming way of doing it. Pulling the housing is a huge job!

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

Read full answer
Jan 26, 2011 • 1999 Jeep Grand Cherokee
0helpful
1answer

My heater will turn on after my jeep warms up and then shut off blow cold air and never g Get hot again
The A/C and heating problems in GC's is most often caused by broken blend doors, which control the flows of hot and cold air.
Read full answer
Dec 01, 2010 • 1999 Jeep Grand Cherokee
0helpful
1answer

Heat isn't working
Common Jeep problem. Blend doors are either jammed or broken. Dashboard removal is require to repair.
Read full answer
Jan 14, 2010 • 1999 Jeep Grand Cherokee
0helpful
1answer

1999 grand cherikee dual heating zone 1 side hot passanger side cold
If the heat control system is operated by small vacuum hoses, check the hoses under the hood and under the dash at the heater control. The hoses control "doors" or large air-valves which direct heated air. Sometimes the hoses break or become disconnected, and sometimes the doors get stuck.
Read full answer
Jan 01, 2010 • 2000 Jeep Cherokee
0helpful
1answer

Dual cloimeate control blows hot on one side and
you have to get a new control panel which cost usually around 800 dollars. Mine is the same way but i haven't got it fixed i just took out the glove box and kept the switch to tell the motor to make it hot or cold air and put a screw in it and have it held on hot for the winter then ill taker it out in the summer and have it blow cold air
Read full answer
Dec 31, 2009 • 1999 Jeep Grand Cherokee
0helpful
1answer

1999 Jeep Grand Cherokee Limited,Dual climate control blows cool air on the driver side and hot on the passenger side. Was told by dealership item is located behind the dashboard and the repair cost is...
hi
check-out heatertreater.com, i had the same problem with my cherokee and bought the heater treater blend door repair kit. it really does work and you can fit it yourself in around half an hour. kit comes with all you need and full instructions..
hope this helps
Read full answer
Dec 29, 2009 • 1999 Jeep Grand Cherokee
2helpful
3answers

Cold air passenger side, warm air driver's side
same thing happened to mine at 2 yrs. old , the connecting arm on air mix positioner broke. The whole dash had to come out. Part was cheap but labor was huge. This is not a job for the do-it-yourself.
Read full answer
Dec 28, 2009 • 2003 Jeep Grand Cherokee
1helpful
2answers

Heat/ac not working on 2004 Jeep Grand Cherokee Limited
look for Main A/C relay, look for fuses, or go to a/c shop and have gas check out, perhaps leaks, perhaps evaporator, perhaps condenser, but start for relay box on front passengers side, or fuses on same side
Read full answer
Jan 31, 2009 • 2004 Jeep Grand Cherokee
1helpful
1answer

Heat works on driver side, passenger side blows cold air.
Did you check your coolant level or was it low and you added to it at some point? If so the system my need to be bleed or worst case the thermostat is going bad.
Read full answer
Jan 02, 2009 • 2001 Jeep Grand Cherokee
Not finding what you are looking for?

View Most Popular

1999 Grand Cherokee

  • Cars & Trucks

Related Question

When i cut the heat on....the driver side vent blow cold air and the passenger side blows hot..both of the heating hose are hot...whats the problem in a 1999 buick park ave

  • 2000 Buick LeSabre

Related Topics

279 views

Ask a Question

Usually answered in minutes!

Popular Questions

GAUGES GO CRAZY AND SOMETIMES VEHICLE WON'T START

2002 Jeep Grand Cherokee

2007 JEEP GRAND CHEROKEE. TRANSMISSION OVER TEMP

2007 Jeep Grand Cherokee Overland

Fuse panel diagram for 2002 Jeep Grand Cherokee

2002 Jeep Grand Cherokee

2007 Jeep Grand Cherokee won't CRANK - battery is fine.

2007 Jeep Grand Cherokee Overland

Firing order for a Jeep

Jeep Grand Cherokee Cars & Trucks

Check Out the Latest Top Trucks Report!
Check Out the Latest Top Trucks Report!

View all Fixya Reports

Top Jeep Experts

ZJ Limited
ZJ Limited

Level 3 Expert

17989 Answers

Thomas Perkins
Thomas Perkins

Level 3 Expert

15088 Answers

john h

Level 3 Expert

29494 Answers

Are you a Jeep Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...