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hardly any air coming in from heater
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dennishazard
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Dec 10, 2011, 11:34 AM
Post #1 of 16
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hardly any air coming in from heater
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i have a 93 pontiac 3.3 liter, 170,000 miles on it, the heate dose not come out so good, its hot i put in a new heater core and thermastat, someone told me it might be pluged with a nest or something,what i need to know is how can i clean out the heater box ? the blower works fine i replaced it last year the problem is hardly any air come out of the vents, or defrosters, any help would be great....thanks ..........dennis,milwaukee......starting to get real cold and i dont want to go thru this another year .....thanks
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Hammer Time
Ultimate Carjunky
/ Moderator
Dec 10, 2011, 11:43 AM
Post #2 of 16
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Re: hardly any air coming in from heater
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Is the mode selector switching from vent to vent properly?
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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dennishazard
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Dec 10, 2011, 11:53 AM
Post #3 of 16
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Re: hardly any air coming in from heater
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it seems to work, when i put it on i can hear the lovers or what ever there called moving, everything seems to be working right except the is very little air coming out of what ever i put it on, the floor, vents or defrosters, the air comes out good and hot, just very little air
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Hammer Time
Ultimate Carjunky
/ Moderator
Dec 10, 2011, 12:58 PM
Post #4 of 16
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Re: hardly any air coming in from heater
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That would mean it likely has a restriction in the evaporator itself. Look under the dash and make sure it didn't suck in a plastic bag into the air intake. Pet hair is common also.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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dennishazard
User
Dec 11, 2011, 9:04 AM
Post #5 of 16
(1870 views)
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Re: hardly any air coming in from heater
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ok, thanks, but how do i find out where it is ? what dose it look like ? thanks
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Hammer Time
Ultimate Carjunky
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Dec 11, 2011, 9:29 AM
Post #6 of 16
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Re: hardly any air coming in from heater
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I don't have any pictures but the air intake should be pretty obvious.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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dennishazard
User
Dec 11, 2011, 11:56 AM
Post #7 of 16
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Re: hardly any air coming in from heater
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i have the whole dash taken apart but dont know what im looking for any way u could explain to me what im looking for ? thanks
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Hammer Time
Ultimate Carjunky
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Dec 11, 2011, 11:57 AM
Post #8 of 16
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Re: hardly any air coming in from heater
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You don't need to take the dash apart. You should be able to see the air intake from under the dash on the passenger side.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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dennishazard
User
Dec 11, 2011, 2:32 PM
Post #9 of 16
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Re: hardly any air coming in from heater
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what do i look for? there is really nothing there , is it a vent or something ? im not sure what to look for i took the dash apart so i can see if the lovers are moving which the are, i feel so stupid cause i dont know what to look for, im also going to take out the blower motor to make sure nothing is plugging it up some how, can you explain a littele more about this air intake ?
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Sidom
Veteran
/ Moderator
Dec 11, 2011, 6:27 PM
Post #10 of 16
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Re: hardly any air coming in from heater
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The intake is going to be coming from the firewall side. Some are up on the cowling under the hood on the right side by the windshield...
Since the dash is apart take a real close look at the a/c evap core. I had one years ago that got coated with dirt & leaves and pretty much had the same problem you are describing by plugging the core.....
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dennishazard
User
Dec 19, 2011, 7:43 AM
Post #11 of 16
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Re: hardly any air coming in from heater
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ok i found the inlet thing and had the dash all apart, nothing seems to be wrong under there, but what about the entire housing unit where it goes thru the fire wall thats connected to the blower motor housing ? could that have gotten plugged some how ? for some reason my air is being obstructed from the blower motor, it comes out like its on low when i have it on high, i cant seem to figure this out, is that called the heater box ? someone told me maybe something made a nest in the heater box, i need help thanks...........Dennis, Milwaukee
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Hammer Time
Ultimate Carjunky
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Dec 19, 2011, 12:29 PM
Post #12 of 16
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Re: hardly any air coming in from heater
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I think you need to take it to a shop.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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dennishazard
User
Dec 20, 2011, 4:31 AM
Post #13 of 16
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Re: hardly any air coming in from heater
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ok i will thank you for your help
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liltruckjr
Novice
Jan 21, 2012, 2:58 PM
Post #14 of 16
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Re: hardly any air coming in from heater
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Try replaceing the cabin filter, it is located under the hood on the passenger side at the air intake..
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arcticwolf70648
New User
Jan 21, 2012, 8:20 PM
Post #16 of 16
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Re: hardly any air coming in from heater
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I'm not a mechanic but I recently had the same problem...air barely coming from the vents. Three separate trips to the mechanic and they couldn't identify the problem. I went to another shop and the guy identified and fixed the problem in about five minutes. When replacing the blower motor, the mechanic had connected the wrong wires together, causing the motor to spin in reverse and suck air thru the vents instead of blowing air out of the vents. Reversed the wires and problem solved. Very strange but a true story. If your mechanic did anything with the blower motor you might have this checked.
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