LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

heater not blowing hot

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Old Feb 5, 2003 | 12:50 PM
  #1  
Brandon Scoggins's Avatar
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From: Memphis,TN. U.S.A.
Exclamation heater not blowing hot

here's the deal,my heater stopped blowing hot yesterday.I checked my anti freeze and it is full,my temp is staying right above 160 like it always does.But the heater is blowing cold air,if i let it sit with the heat off for a few minutes ,then it will blow hot for about 2 minutes then it turns cold! Please help me out,it's about 35 degrees outside and i am freezing. thanks in advance!!!
Old Feb 5, 2003 | 01:07 PM
  #2  
silver97Z's Avatar
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From: Barboursville, WV
Lightbulb

Same thing happened to me...had the radiator and heater core flushed and refilled and everything was fine after that.
Old Feb 5, 2003 | 01:31 PM
  #3  
shoebox's Avatar
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From: Little Rock, AR
Yep, a flush of the heater core is what you need. Flush it both ways with a garden hose until it runs free and clear.
Old Feb 5, 2003 | 04:29 PM
  #4  
red96z's Avatar
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From: memphis tennessee usa
Re: heater not blowing hot

Originally posted by Brandon Scoggins
here's the deal,my heater stopped blowing hot yesterday.I checked my anti freeze and it is full,my temp is staying right above 160 like it always does.But the heater is blowing cold air,if i let it sit with the heat off for a few minutes ,then it will blow hot for about 2 minutes then it turns cold! Please help me out,it's about 35 degrees outside and i am freezing. thanks in advance!!!
hey dude just keep the windows up and breathe alot your hot breath should work fine
Old Feb 5, 2003 | 04:42 PM
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WhiteThunderZ28's Avatar
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Joined: Dec 2002
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From: BREW CREW, WI
Just a question? How do you flush the heater core out? I dont have a manual so is there a website anyone could send me to? The reason why im asking is because my heat just went out to and im freezing my a$$ off.

Thanks
Old Feb 5, 2003 | 05:44 PM
  #6  
SlickBlack Z's Avatar
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From: NJ, USA
I just had this same problem recently, and Flushing the heater core worked. Get 2 hoses from the auto parts store, the same size as the ones coming out of the heater core...get them about 4 feet long. Pull the hoses off the core and put the 4 foot ones on. Hook up your garden hose to one of the hoses, I connected mine with a clamp. then put the other hose in a bucket. Turn on the garden hose and watch all the crap that comes out. Then reverse the hoses and flush it the other way. Do this a few times until the water runs clear and without restriction. Then reconnect your heater line, run the car and bleed the system of air. Your heater should work great! Good Luck!
Old Feb 5, 2003 | 07:03 PM
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shoebox's Avatar
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From: Little Rock, AR
A little visual help.
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