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  #1  
Old 01-19-2013, 03:25 PM
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What's this one going to cost me

So today my truck decided that the ac/heat blower doesn't want to work right. It only will blow out of the defroster on the top of the dash. It still blows warm and cold. But it won't blow out the main vents on front of dash or the floor. Have tried moving the switch in all positions. Turning on/off. Turning truck off. But nothing, any ideas?? I would like to fix this one myself if possible to save a buck.
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Old 01-19-2013, 03:39 PM
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Cant give you a cost but it sounds like either the vacuum pump is shot or you have a bad line somewhere.
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Old 01-19-2013, 03:45 PM
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sounds like youve got a line off or leaking. Open up your hood,on the passenger side all the way against the firewall your gonna have a bunch of lil hoses. Start lookin around. And also your vac pump will be right their as well. I forgot to hook up 1 lil line and I had the same issue you do. Hooked it back up and its all good.
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Old 01-19-2013, 04:34 PM
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K I'll check that in the am and see what I find. Thanks.
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Old 01-19-2013, 04:44 PM
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What's this one going to cost me

From napa it was 100 bones if i remember correctly. Make sure u get one with a waranty... Mine went up again about 6 months later. Replaced for free.


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Old 01-19-2013, 04:50 PM
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What's this one going to cost me

Also check under the dash on the passenger side. My girlfriend rode with me and knocked a line loose on accident once and caused the same thing. There's a little valve under there and it's got a couple lines running to it.


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Old 01-19-2013, 06:11 PM
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What's this one going to cost me

Check the fuse first. Think it's 28. If your fog lights don't work there's your problem. Also turn key to start position and open hood, should hear pump running behind passenger side battery.


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Old 01-19-2013, 06:38 PM
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I'll blame the girl. She rode with me this morning. Lol. Hahahaha. I'll look at all this tomorrow and let u guys know what I find.
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Old 01-19-2013, 06:39 PM
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Also I didn't figure it was a fuse since it was still blowing out of the defroster.
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Old 01-19-2013, 08:24 PM
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If a fuse is blown it will not run the vacuum pump which I turn won't flop the little flippy thing to switch it from defrost to vent to floor. Check for vacuum leaks. Trace the line from the hubs to the pump. There are two identical lines coming off the vacuum reservoir. The other one heading towards the cab runs your defroster.
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