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I have a 1999 Jeep Cherokee XJ Sport and when I turn the Air Condition on, it blows from the Defrost position only but Not from the normal vents. Please help.

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SOURCE: 1999 Jeep Cherokee sport/air vents do not blow out cold or hot while it is on

this sounds like the recirculation door in the heater box is broken and this is a difficult and can be an expensive repair as the dash has to be removed for access. a quick check for this is if you release the glove box and let it hang you will see the heater box if you reach up to the left top you will feel a grid and the recirc flap is housed there you can operate the blower and hot and cold and see if flap moves

Posted on Jun 22, 2009

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I have a 1999 jeep cherokee classic where the heat is not working. I checked the heater hoses and they were both hot. The vents blow out air except when it turns to defrost they I hear a loud plastic...


check the vacumn pipes that work the flap pistons ,also under the front of the bonnet against the firewall is a vacumn box so make sure this isnt split or losing vacumn

Oct 22, 2010 | 1999 Jeep Cherokee

1 Answer

The blower for the air condition & defrost is not working


You'll need to check all fuses under dash as well as under hood in fuse/relay box, as one may be blown. Then get back to us if you check them all & are good but still have problem.

Aug 24, 2009 | 1999 Jeep Grand Cherokee

1 Answer

Air condition vents on dash are not blowing any air, only the defrost vents on top of dash are blowing, any ideas


It sounds like the flap that controls air flow is stuck. It is controlled by vacuum. The vacuum line could be leaking, the line could be off, or the vacuum actuator could be faulty. Hope this helped.

Jul 17, 2009 | 2001 Jeep Cherokee

1 Answer

98 XJ cherokee sport 4.0 a/c blows hot air not warm, hot like the heater will not disengage. ac is charged lines and canister are cold. all positions on selector blows heater.


check that the heater control valve on the heater hoses is working, also check that blend door inside heater box and blend door vacuum motor are working. Likely the problem is with the door or motor, but unfortunately, the entire heater box needs to be removed to get to them on most vehicles.

Jul 11, 2009 | 1998 Jeep Cherokee

1 Answer

Jeep AC blows cold air at defrost and feet but not through vents


There is a flap that directs the air. the flap is controlled by a vacuum actuator. This is located inside the venting. The actuator is connected to little vacuum hoses that attach to the temperature control switch. Either the flap is stuck, or the actuator has gone bad.

Jul 01, 2009 | 1999 Jeep Grand Cherokee

2 Answers

1999 Jeep Cherokee sport/air vents do not blow out cold or hot while it is on


this sounds like the recirculation door in the heater box is broken and this is a difficult and can be an expensive repair as the dash has to be removed for access. a quick check for this is if you release the glove box and let it hang you will see the heater box if you reach up to the left top you will feel a grid and the recirc flap is housed there you can operate the blower and hot and cold and see if flap moves

Jun 02, 2009 | 1999 Jeep Grand Cherokee

1 Answer

Defroster won't blow air next to windshield


My son's jeep had the same problem. The actuator that controls the the defrost damper came out. Pull the radio out of the dash to gain access to the damper. Looking into the radio hold on the right side you can just see the arm. Move the heater control switch and you can see it moving around. I put a drop of instant glue on the end and pushed back in and its been fine.

Hope this helps.

Jan 27, 2009 | 1999 Jeep Cherokee

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