Question about 1999 Jeep Grand Cherokee

1 Answer

Heater wont blow heat but A/C works fine....

Hi I have a 1999 Grand Cherokee Limited 4.7 and my heat went out completely. At first it was jus the passenger side but now it doesnt heat at all. A/C works fine but really dont need it right now. Trouble codes on climate control read 20,46,52, and 56. Is there way to bypass some sort of circuit or would it have to be replaced? Please help im FREEEEEZZZZIINNGGGG!!!

Posted by on

  • sandersj_87 Nov 24, 2008

    I have a problem with my heat not working in a 1998 jeep grand cherokee 4.0L 4WD. The A/C works fine but my heat went out all of a sudden. Any suggestions?



1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    An expert who has answered 200 questions.


    An expert whose answer got voted for 20 times.

  • Expert
  • 242 Answers

Go to engine compartment, locate heater control valve. It will have the heater hoses connected to it that pass into the firewall. Unhook actuation plunger on the control valve. This will allow the coolant to flow though the heater core at all times. Now you have heat. If you get too hot, you can control it by the hot/cold settings to adjust the heater door.

Posted on Nov 21, 2008


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

1999 jeep grand cherokee limited 4.0, the keyless control just unlock all the doors with the front passenger door open

be more clear., please.
what works, and dont, using all ways to lock a car.
all doors. all methods.
inside or out side car. (fob and not fob ways)
only that matters

Nov 14, 2016 | 1999 Jeep Grand Cherokee Limited

1 Answer

I have a 1999 jeep grand cherokee limited 8 cyl motor and the a/c for the passenger side is blowing out hot air how do i fix the problem?

The dash has to be removed to access the blend doors on the passenger side of the heater box.. it is not a fun job . Chrysler knows it's a problem but have not done anything about it.

Jul 28, 2010 | 1999 Jeep Grand Cherokee

1 Answer

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...

check-out, 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

Dec 29, 2009 | 1999 Jeep Grand Cherokee

1 Answer

Heat on drivers side cold on passenger

there is not enough freon in the system or doors problems,check heater funtion to see if it heat all windows,if it work it need to be check with AC gauges or machine for it.

Nov 23, 2009 | 1999 Jeep Cherokee

1 Answer

2006 Jeep Grand Cherokee Laredo ac not cooling

My 1999 limited does this. When i bought it off the guy he said that its because of some flap down by the passengers left foot. In mine the passenger air barely even blows because of this.

Jun 17, 2009 | 1999 Jeep Grand Cherokee

1 Answer

Driver side blows hot air passenger side blows cold

try flushing out the heater radiator core.remove the two pipes and put a hose on the conections and keep reverseing flow.dont forget to top up with pure antifreeze,

Feb 05, 2009 | 1999 Jeep Grand Cherokee

1 Answer

Where exactly on the heater hoses''

your control valve is in the dash assembly, passenger side. buried. its not in the engine compartment. im having the same problem with mine...i am thinking its more like the climate control is screwed up.

Nov 21, 2008 | 1999 Jeep Grand Cherokee

Not finding what you are looking for?
1999 Jeep Grand Cherokee Logo

423 people viewed this question

Ask a Question

Usually answered in minutes!

Top Jeep Experts


Level 3 Expert

77186 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22265 Answers

Kevin Daniels

Level 3 Expert

1455 Answers

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

Answer questions

Manuals & User Guides