installed new blower motor....
10-09-2002, 02:41 PM
#1
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Car: 1991 Corvette Coupe
Engine: L98
Transmission: 700R4/4L60 same trans different name
installed new blower motor....
.......but no air is comming out of the vents
the blower motor works, because air is comming out of the upper dash vents (that blow onto the windshield) but as for the passenger vents, no air
what did i do wrong
the blower motor works, because air is comming out of the upper dash vents (that blow onto the windshield) but as for the passenger vents, no air
what did i do wrong
10-09-2002, 08:38 PM
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Car: 89 Formula
Engine: Carbed 5.7
Transmission: TKO-600
my car does the same thing, tons of heat out of the dash but when i put it on vent i only get a tiny bit out of the vent. any idea anyone? also sometimes driving down the highway i can hear air comin threw my dash out of that little 1 inch by 2 insh vent or wutever, wut does this do and where does it go?
10-09-2002, 09:10 PM
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Car: 1988 Pontiac Firebird, flat black
Engine: Stock 305 LO3
Transmission: Five speed
It might be a vacum problem. If air is moving out of the other vents it might not be a motor. Have you chaecked the vacum at the panel??
10-09-2002, 09:56 PM
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Car: 1991 Corvette Coupe
Engine: L98
Transmission: 700R4/4L60 same trans different name
well, the motor was definetly fried cuz the old one didnt work at all
maybe i have to turn the engine on?
the new motor works, but no matter what position i put the control head switch on, it only blows air out of the top and nothing through the passenger vents
maybe i have to turn the engine on?
the new motor works, but no matter what position i put the control head switch on, it only blows air out of the top and nothing through the passenger vents
10-09-2002, 10:10 PM
#7
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yea i just installed a new motor in last week,the old one i had to bang on it to get it started and then shut the hood.as far as the vents,if u have a vacuum leak behind the control switch then it will only blow air through to the windshield.i had the same problem and my boss fixed it for me but im not sure how.now i have to change my heater core,i got a nice green pool on the passenger side but oh well i dont sit there only the girls do 
.i dont think that is hard to fix so pull out your radio,unbolt the heater controls and take a look.good luck.
.i dont think that is hard to fix so pull out your radio,unbolt the heater controls and take a look.good luck. Trending Topics
10-09-2002, 11:04 PM
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Car: 91 z28
Engine: 305 tpi
Transmission: 700r4
i had the same problem and it was a vacum hose that fell off. its the one that goes from the heater motor across the back of the engine bay near the windshield. the little hose fell out.
10-10-2002, 09:59 AM
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Car: 1992 Camaro RS Convertible
Engine: 3.1
Transmission: Auto
89formula#1
if the vent you are referring to is the vent all the way next to the window, its purpose is a side window defroster. If air is leaking out of that vent at highway speeds, you'll probably find that air is also coming out of the front windshield defroster vents as well. I think the problem might be that the ent partition (the door that directs airflow to the different vent systems) is not closing all of the way, or at highway speeds the air is pushing the door open, and air is getting in that way.
hope this helped (and that i'm right
)
hope this helped (and that i'm right
)
10-10-2002, 10:19 AM
#11
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Location: Doghouse ······································ Car: 1989 Formula 350 Vert Engine: 350 L98 Transmission: 700R4 Axle/Gears: B&W 3.27
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Car: 87 Formula T-Top, 87 Formula HT
Engine: 5.1L TPI, 5.0L TPI
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that happened to me there was a vacuum hose right up on the firewall that had fallen apart, and thus the controls were getting no vacuum. Changed the piece and works great. Mine was broke right above the heater core tubes that go through the firewall.
John
John
10-10-2002, 08:50 PM
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Car: 1988 Pontiac Firebird, flat black
Engine: Stock 305 LO3
Transmission: Five speed
I have a loose hose around the blower motor and I am not sure where it goes. I am having the same problem. Air only out the windshield vents. I have looked all around and I can t find out where it goes!! I guess I am just looking in the wrong spot. Any help?
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