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jacobsimmons | why no heat | ||
Guru Newb
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it's cold here in pa. and i go to turn on the heater in my 93 LT1 c4 and i have it set to 90* and i just don't fill the heat, the fan comes on with auto and fan over ride, my temp gage reads 205* and there are no leaks, whats going on? any one with any help will most appreciated ,
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Posted on: 2012/11/10 0:47
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j. simmons |
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1Fast04Vert | Re: why no heat | ||
Elite Guru
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Sounds like the blend air door, or damper, isn't working. I never palyed with mine, but I understand you can see it by removing the controller on top of the evaporator housing on the motor side of the firewall, passenger side.
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Posted on: 2012/11/10 0:50
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2004 Vert. 475hp. Built by Vengeance Racing |
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jacobsimmons | Re: why no heat | ||
Guru Newb
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thank you , i'll take a good look at that after work and let you know, it's a start and thats more than i had.
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Posted on: 2012/11/10 0:54
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j. simmons |
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BillH | Re: why no heat | ||
The Stig Moderator
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Yea, it has to be the door or controller because there is always hot water in the heater core (no shut off valve in the heater core lines). |
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Posted on: 2012/11/10 0:59
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Every man dies but not every man lives. |
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jacobsimmons | Re: why no heat | ||
Guru Newb
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ok, would a fuse maybe out?
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Posted on: 2012/11/10 1:02
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j. simmons |
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josephf31 | Re: why no heat | ||
Senior Guru
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Quote:
Very unlikely it's a fuse, much more likely it's an issue with the vacuum system that controls the hvac or a mechanical issue with the dampers, as previously noted. Usually if it's a vacuum issue you get heat all the time though :-) |
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Posted on: 2012/11/10 1:14
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2002 Magnetic Red C5 6 spd LS1 convertible |
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jacobsimmons | Re: why no heat | ||
Guru Newb
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thanx Bogus, you the man
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Posted on: 2012/11/10 1:17
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j. simmons |
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jacobsimmons | Re: why no heat | ||
Guru Newb
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thanx Bogus, you da man
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Posted on: 2012/11/10 1:18
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j. simmons |
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Matatk | Re: why no heat | ||
Webmaster
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Is this a new issue? I don't know how long you've had the car. Is the heater core bypassed?
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Posted on: 2012/11/10 1:41
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2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
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Matatk | Re: why no heat | ||
Webmaster
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Is this a new issue? I don't know how long you've had the car. Is the heater core bypassed?
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Posted on: 2012/11/10 1:41
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2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
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jacobsimmons | Re: why no heat | ||
Guru Newb
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i'v had the car for a month and there is some heat i felt on a warmer day when i forgot to turn it off, just enough to let me know it was on.
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Posted on: 2012/11/10 1:52
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j. simmons |
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Matatk | Re: why no heat | ||
Webmaster
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Are you sure that wasn't just radiant heat from the trans tunnel? Inspect the inside of the engine bay to make sure the hoses go to the core and aren't looped.
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Posted on: 2012/11/10 2:14
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2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
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EngineDoctor | Re: why no heat | ||
Master Guru
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I just had to do heater core bypass surgery on my car last week... Antifreeze chok'in me out ! No heater this time of year sux. |
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Posted on: 2012/11/10 3:16
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jacobsimmons | Re: why no heat | ||
Guru Newb
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yep, no heat this time of year "sux", tomorrow i'll check more closely and make sure there is no bypass and also the blend door, as for having some heat when i had forgot to turn it off, when i did turn it off the fill of heat did stop.
thanx again for your help , i just hope is't not the heater core , |
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Posted on: 2012/11/10 21:41
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j. simmons |
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jacobsimmons | Re: why no heat | ||
Guru Newb
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ok, i checked all the hoses and there is none bypassed, must be the damping door, i'll have to check it when i get a fsm. thanx.
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Posted on: 2012/11/11 15:00
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j. simmons |
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Matatk | Re: why no heat | ||
Webmaster
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Remove the blower control module from the top of the heater box (inside engine bay, three screws) and you can peek in there and see if the door is physically moving when you change the settings on the control head.
If it's not moving, you need to do the step by step diagnosis to figure out why. As a double check, make sure the hose coming out of the heater core feels hot when running, could be a blocked heater core. |
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Posted on: 2012/11/11 15:07
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2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
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jacobsimmons | Re: why no heat | ||
Guru Newb
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thank you , i'll give it a look , this site is really a great help!!!!!
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Posted on: 2012/11/11 15:16
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j. simmons |
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Matatk | Re: why no heat | ||
Webmaster
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Posted on: 2012/11/11 15:22
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2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
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jacobsimmons | Re: why no heat | ||
Guru Newb
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thanx matatk, that diagram is just what i needed , your a big help for this new vette owner .
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Posted on: 2012/11/11 20:18
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j. simmons |
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jacobsimmons | Re: why no heat | ||
Guru Newb
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heat trouble fixed, clogged core . had system flushed after i could find no problems through the great suggestions you all gave me. thanx to all!!
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Posted on: 2012/11/19 21:22
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j. simmons |
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bogus | Re: why no heat | ||
Grand Imperial Pooh-Bah
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Wow... clogged core? That's rare.
Usually the cores leak long before they clog. Good catch! Now... hope you get through the winter without leaks!! |
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Posted on: 2012/11/20 0:26
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The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me |
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Matatk | Re: why no heat | ||
Webmaster
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Glad you got it fixed!
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Posted on: 2012/11/20 1:00
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2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
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jacobsimmons | Re: why no heat | ||
Guru Newb
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thanks all, being new to vette all the help i got was great!, nice and warm now and also fixed the ABS/ARS lights that would come on and then go out at restart was nothing more than low break fluid , they have not come on since .
GREAT SITE!!! |
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Posted on: 2012/11/21 19:44
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j. simmons |
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bogus | Re: why no heat | ||
Grand Imperial Pooh-Bah
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Thanks! Glad you like us!
And the more abstract problems we get, the better our archive gets! As these cars age, we will start to see different problems, too... |
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Posted on: 2012/11/21 20:23
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The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me |
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