Question about 1999 Jeep Cherokee

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Blower motor replaced blower motor and still no air is coming out of vents, checked fuses and there fine to what else could be the problem?

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  • Jeep Master
  • 5,568 Answers

You have problems with one or more vacuum lines.
The flow of air is controlled by opening or closing ducts with vacuum.
Check the vacuum reservoir under the hood (probably a round plastic canister with two hoses attached) to make sure one of the spigots is not broken off (yeah, it's plastic) and the hoses are intact.
One of the hoses leads to the intake manifold the other goes to the in-dash control unit.

If you see no problem there, you will have to pull the control assembly from the dash and check those hoses too.

I wuld highly recommend you spring for ~$20 US for a Haynes manual for your Jeep. About any parts store will have them.
It will help you now and maybe keep some schlock mechanic (I know, I'm not talking about you guys) from ripping you off.

Posted on Aug 20, 2008

5 Suggested Answers

leetamara
  • 702 Answers

SOURCE: blower vents on 86 regal

The blend door in the heater box itself is what directs the air to where it needs to go as per selector switch. The heater box is located under the dash.

Posted on Jun 13, 2008

SOURCE: air vents

THE DEFROSTER DOOR WAS FROZEN SHUT. WHICH CAUSED COMPUTER SWITCH TO GO OUT.HAD TO REPLACE THE DEFROSTER BOX(?) AND COMPUTER SWITCH. WORKS FINE NOW.

Posted on Oct 05, 2008

  • 125 Answers

SOURCE: front blower motor not working, rear works fine.

I'm looking at the circuit in a haynes manual and the 40 Amp breaker is the only one showing, but there is a blower motor relay in the power distribution center in the same area as the fuse, it might be that (you could do a temporary swap with another of the same type to confirm). I doubt the motor brushes are worn out already on a 2007,so I'm guessing if not the relay then a wiring problem or just a faulty blower motor. if you have a meter or circuit tester I would check the power at the blower motor itself to confirm wiring or motor. good luck

Posted on Aug 23, 2009

  • 4 Answers

SOURCE: blower not turning to push air and heat through vents

Replace the Blower Resistor. (About $12).

The resistor might be good; I have found that the terminals corrode, create resistance and sometimes melt the connector (About $100). Check the resistor before replacing it! If the connector gets fried, solder pigtails onto the good resistor and use Marr connectors to attach the pigtails to the existing wires,

Posted on Jul 15, 2010

  • 83 Answers

SOURCE: 2004 dodge Durango, air will not blow, have

sounds like you have done all the hard stuff maby its the switch inside [on/off] on the dash that is not working properly.. i hope this helps its the first thing i thought of...

Posted on Jun 02, 2011

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1 Answer

There is no cold air or hot air coming out of vents. just stopped one day


You can hear what ? Blower motor ? Probably the blend door actuator is not working . I 'm questing because I don't know what make vehicle you have .

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I noted your question. You said that NOTHING is coming out of the VENT. Do you mean the interior vents normally for heat and air? Does air blow out of your dash defrost vent? Does blower motor work continuously? If so, I suggest that you check fuse panel at driver's door. If you have your owner's guide, look on pages 251 and 252. 251 shows your interior fuses. 252 shows description for Fuse #9 (10A). You have numerous 10A fuses. #9 is the lowest fuse perpendicular to Fuse #10 (15A). If it is blown, you have some sort of resistance in one of 4 things RUN BY THE FUSE. I went to my mechanic and he told me that the Blower Motor Control Resistor behind the glove compartment was bad. I replaced it (125 dollars) and it was not the problem. Check the fuse. Is it blown? Replace and the system may work normally. If it continues to blow please get back to me. If the system works after replacement, please respond.

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Air quit blowing. I push the a/c button and the compressor kicks in the way it should but no air comes from the vents. No problems before. No funny noises, nothing but good hard cold air.


if blower not working at any speed disconnect the blower motor connector and put a test lit across if lit up replace blower motor this cars are well known for melting the connector at blower motor if so replace blower motor and pigtail

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Heat or A/C does not work in my car?


Either you have a blower motor FUSE that has gone bad "typically the problem" or you have a burned out blower motor. Usually the cause of a blown or burnt motor if not a Fuse, Is caused by the vented air from outside letting debris like sticks or leaves,acorns etc. enter the fan box. If ANY of the mentioned items get caught in the "blower box" then it will usually blow the fuse and or burn up the blower motor. Start in your fuse box and look for a burnt fuse and replace with same size fuse. If it blows the new fuse quickly then you have debris in "Blower box" that will have to be removed before adding yet another fuse. I have had the same problem and I found a bunch of leaves in my "Blower Box". I removed the leaves and replaced the burned out fuse. And I have had no more problems with the blower motor blowing air.

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1 Answer

1996 buick park ave ultra- air conditioner turns on but now air flows through the vents it was working fine! and all of a sudden it stoped


I answered this in a different question but I was assuming the air was not coming out of the right vent.
If the air is not blowing at all, you need to check for voltage at the blower fuse, the blower motor, and the resistor.
If there were a blockage such as a dirty cabin air filter, you should hear the blower running.

Jul 17, 2012 | Cars & Trucks

1 Answer

2005 Buick Rendezvous. No Air comes out of vents. Thinking this is from a bad fuse or blower motor. Need help in locating what to do next.


It sounds like you have a vacuum leak. When there is no vacuum present to acutate the system, it will default to air only coming from the defrost vents. Is the blower motor operating or is the 'no air' you're talking about just no air blowing? If it's not blowing, check your fuse; if that's good, check for voltage at the blower connection. If you have voltage at the connection, remove the resistor to make sure it isn't bad befor condemning the blower motor.

Jun 24, 2011 | 2005 Buick Rendezvous

1 Answer

The fan stopped working for the rear AC/heat in our 2003 odyssey. Checked 40amp suqare fuse under hood and it tested ok. Is there a fuse or breaker for the rear fan motor?


The large fuse you checked is for the rear fan blower motor. The fuse you need to check is for the fan motor relays and rear mode control motor. It is fuse No. 3 (7.5A) located in the driver's under dash kick panel fuse box.

If fuse No. 3 is blown and you replace the fuse and it blows immediately, you'll have to check the five relays and the mode control motor all located near the rear A/C unit in the right aft sidewall. Most likely, the mode control doors have become jammed and that is why the fuse blows. The doors shift air from overhead vents (cool) to floor vents (heat).

If the fuse is fine, the trouble is probably with the blower motor itself or the wiring to the blower motor is broken, or there is a bad ground.

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1 Answer

Blower working on top 2 settings but no air comeing from vents


Hi

Thanks for using FixYa. The possible causes due to which the blower is not working normally are fuse, blower resistor or a bad blower motor. Test the voltage at the blower with a test light. Please check the motor relay switch fuse under the dashboard. Use a multi meter to measure ohms for continuity. If these are fine, bypass the blower motor relay switch to make sure blower motor is running fine. Motor relay switch is right next to radiator fan relay switch under the hood. Pull out the blower motor relay switch to see 4 female pin holes. Test the relay switch using a 12 volts power source and a multi meter to measure continuity. If fan works after jumping the pin holes, then blower motor is fine but relay switch may be faulty. You may also need to replace the blower motor resistor. If still the problem persists, then you need to replace the blower motor.

Please do rate the solution and revert for further assistance.


Thanks
Rylee

Aug 09, 2009 | 1997 Honda Civic

1 Answer

Air and heat not blowing air through vents


Either Your fan switch is burned out or you blower motor is no good, your blower motor is on the passenger side under the dash. Before you replace any parts you need to check your fuses and relays under your hood and in the car. Usually if your fan switch goes bad you will still get some air blowing thru the vents, so my guess would be blower motor, If its not a blown fuse or relay.

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1 Answer

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if the blower works sometimes check the blower motor resistor which should be located by the blower motor

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