C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

A/C / Heater Help!!!!!

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Old Dec 6, 2002 | 01:30 AM
  #1  
Wheelman's Avatar
Wheelman
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From: Less Talk, More WOT | Houston TX
Default A/C / Heater Help!!!!!

I just replaced my heater core, and now when I try to use any of the options on the a/c unit (auto, bi-lev, econ,(what does econ do anyway :crazy: ) etc) i can hear the blower motor come on but i cant feel any air coming out of the vents. For some reason the air blows hard out of the defroster, but nothing else. I know my blower motor was weak before, but I used to be able to tell when the blower was working. :mad It is so irritating I can feel the heat but its not coming out of the vents!!! Any ideas on what to look for when I take it back apart again??
Thanks in Advance
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Old Dec 6, 2002 | 01:36 AM
  #2  
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Mike's 86
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From: Chicago Suburb Illinois
Default Re: A/C / Heater Help!!!!! (Wheelman)

Check for any disconneted vacuum lines around the heater. Mike
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Old Dec 6, 2002 | 01:39 AM
  #3  
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From: Less Talk, More WOT | Houston TX
Default Re: A/C / Heater Help!!!!! (Mike_D)

funny you say that becuase after i fixed it there was a hissing noise that turned out to be a vacuum leak from a small black hose. I hooked it back up and the hissing stopped but i realized the connector i plugged it back into actually had 2 different places to plug a hose into. Do you think this is the problem? Does vacuum actually control where the air from the blower goes??
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Old Dec 6, 2002 | 08:56 AM
  #4  
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PTz-92-LT1
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From: Micco FL
Default Re: A/C / Heater Help!!!!! (Wheelman)

You are correct, the vacuum powers the deflection of the doors that control the flow.
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Old Dec 7, 2002 | 09:23 PM
  #5  
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oldace84
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From: tucson AZ
St. Jude Donor '04 & '05
Default Re: A/C / Heater Help!!!!! (Wheelman)

Did you check on putting a higher CFM fan in there...if so I need to find out which one....I want more air to blow....higher capacity....did you find one?????
Let me know...
thanks
tony
:confused:
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