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Old 09-01-2011, 06:37 AM   #1
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A/c switches

Problems with my a/c switches on my 04
Problem 1. No air runs through till you turn the fan on 3 or 4.
Problem 2. No matter what setting it shoots outta the vents above the radio..
So is it a cheap fix?

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Old 09-01-2011, 08:28 AM   #2
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1. Its a very, very, very common issue. It's the blower resistor starting to go. The part is around 20.00 and easy to replace. It's in the glove box opening, just below the box itself.

2. You have a vacuum leak. The default position is the defrost. There posts with vacuum diagrams

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Old 09-01-2011, 09:03 AM   #3
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Sweet hopefully I can get to that this weekend. Thanks!
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Old 09-03-2011, 09:09 AM   #4
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just replaced my resistor pack in my 98 wrangler...not 20 dollars,shopped around and cheapest was 48 bucks plus tax. wish it was 20 bucks.
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Old 09-03-2011, 10:47 AM   #5
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Cool Same problem in my 97'

My A/C only blows on the highest setting and 1-3 don't work at all. I thought maybe the switches on the inside went out on 1-3. Guess ill look under the glove box and see whats up.
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Old 09-03-2011, 10:53 AM   #6
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If 1-3 work but not 4 it's usually blower switch

If only 4 works usually resistor
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Old 09-03-2011, 11:12 AM   #7
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The fan speeds may go out one by one. Thet's the way mine and my neighbor's went. I lost 1 then a couple monts later 2 then 3.

97-02 do have problems with the switch also. 03-06 do not have the switch issue.
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Old 09-03-2011, 11:37 AM   #8
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My 04 1-3 went out after I replaced my radio. Ac works all over, put in new head unit only highest setting works. Same problem for me?
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Old 09-03-2011, 11:53 AM   #9
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Quote:
Originally Posted by KidRock171
My 04 1-3 went out after I replaced my radio. Ac works all over, put in new head unit only highest setting works. Same problem for me?
I'm not going to word this correctly but from my rudimentary understanding high setting is powered by a connection to battery. 1-3 is powered by a switch that's separate.
So if cd player was changed possible could have effected. But I'm not the technical type
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Old 09-03-2011, 02:04 PM   #10
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I suppose I'll start with replacing the part under glove box and see if it helps.
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Old 09-03-2011, 03:03 PM   #11
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Quote:
Originally Posted by fan of fanboys View Post
I'm not going to word this correctly but from my rudimentary understanding high setting is powered by a connection to battery. 1-3 is powered by a switch that's separate.
So if cd player was changed possible could have effected. But I'm not the technical type
No not exactly. The "resistor pack" Has a three resistors for fan speed 1, 2, 3. Each has a different resistance thus regulating the current to the fan for each setting. Setting 4 does not go through a resistor. The resistors tend to burn out and you loose the lower speeds.
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Old 09-03-2011, 03:22 PM   #12
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Quote:
Originally Posted by Neil F.

No not exactly. The "resistor pack" Has a three resistors for fan speed 1, 2, 3. Each has a different resistance thus regulating the current to the fan for each setting. Setting 4 does not go through a resistor. The resistors tend to burn out and you loose the lower speeds.
I was like 40% right ha. Knew 4th was diff than 1-3
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Old 09-03-2011, 11:31 PM   #13
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So I replace resistor pack and I have ac again?
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Old 09-04-2011, 08:04 AM   #14
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The resistor pack has nothing to do with the AC. It is controls the fan speed. Heat/AC

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