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rank
Joined: 02 Oct 2006
Posts: 1268
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| Posted: Thu Dec 13, 2007 9:22 pm Post subject: t600/t800 defrost |
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The heater/AC/defrost fan doesn't seem to blow as much air as it should in my '95 T600 and my '98 T800. The temp is fine, it just needs more air. I need to have the def on full in order to keep the fog and ice off, meanwhile the side windows fog up and my feet freeze.
Is this a common thing? |
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headborg
Joined: 06 Nov 2007
Posts: 1105
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| Posted: Thu Dec 13, 2007 9:27 pm Post subject: |
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| can't speak for about the t600, but the t-800---you can't get the side windows to defrost( at least I never could )--yep need electric socks...or keep switching from def to floor vent. |
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rank
Joined: 02 Oct 2006
Posts: 1268
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| Posted: Thu Dec 13, 2007 9:49 pm Post subject: |
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| oh great. :roll: |
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bob h
Joined: 15 Oct 2006
Posts: 664
Location: Nb
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| Posted: Fri Dec 14, 2007 6:50 am Post subject: Re: t600/t800 defrost |
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rank wrote: The heater/AC/defrost fan doesn't seem to blow as much air as it should in my '95 T600 and my '98 T800. The temp is fine, it just needs more air. I need to have the def on full in order to keep the fog and ice off, meanwhile the side windows fog up and my feet freeze.
Is this a common thing?
If the airflow is truly too low, it is most likely caused by the cabin air filter for the HVAC system. |
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allan5oh
Joined: 26 Aug 2005
Posts: 2151
Location: jackassville (winnipeg, mb)
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| Posted: Fri Dec 14, 2007 12:55 pm Post subject: |
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| Stop breathing. |
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Maniac
Joined: 15 Sep 2004
Posts: 626
Location: Northeast
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| Posted: Fri Dec 14, 2007 3:22 pm Post subject: |
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Quote: Is this a common thing?
Yes, in KW's anyway, driver side fogs up bad on my all the W9's I have had, there is no cabin filter that I know of, only thing you can check is that all the vent hoses are attached and not kinked behind the dash.
I have the passenger side floor heat vent blocked off, so I can get more heat on my side, I keep the center vents on the dash closed in the winter, and the side ones aimed at the side windows. |
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headborg
Joined: 06 Nov 2007
Posts: 1105
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| Posted: Fri Dec 14, 2007 3:37 pm Post subject: |
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Maniac wrote: Quote: Is this a common thing?
Yes, in KW's anyway, driver side fogs up bad on my all the W9's I have had, there is no cabin filter that I know of, only thing you can check is that all the vent hoses are attached and not kinked behind the dash.
I have the passenger side floor heat vent blocked off, so I can get more heat on my side, I keep the center vents on the dash closed in the winter, and the side ones aimed at the side windows.
then buy one of those clip-on tornado fans and clip to the passanger hand hold- aim at your passanger window and pug in the cig lighter and suck some of that defrost and direct it at the window. |
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bob h
Joined: 15 Oct 2006
Posts: 664
Location: Nb
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| Posted: Fri Dec 14, 2007 7:21 pm Post subject: |
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Maniac wrote: Quote: Is this a common thing?
Yes, in KW's anyway, driver side fogs up bad on my all the W9's I have had, there is no cabin filter that I know of,
I've had lots of customers that "didn't know they had one"... it's used to filter incoming air before it clogs your a/c evaporator. |
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COLT
Joined: 03 Jan 2006
Posts: 576
Location: FT ST JOHN
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| Posted: Fri Dec 14, 2007 9:01 pm Post subject: |
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Use fresh air, not recirculate, and don't drag snow into your truck from your boots...
Use a "winter front" when it's cold. |
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headborg
Joined: 06 Nov 2007
Posts: 1105
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| Posted: Fri Dec 14, 2007 9:34 pm Post subject: |
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bob h wrote: Maniac wrote: Quote: Is this a common thing?
Yes, in KW's anyway, driver side fogs up bad on my all the W9's I have had, there is no cabin filter that I know of,
I've had lots of customers that "didn't know they had one"... it's used to filter incoming air before it clogs your a/c evaporator.
I couldn't say for sure-but I bet Bob's right--every other truck I've driven had one--usually located just behind the AirFilter in a pull out compartment--there's a place under the bunk for one there too. It's just been too many years since I've been in a KW to remember ...where it's at.
Come on Bob! Don't keep us in suspense......where's it located? So the poor guy can at least pull that dirty clogged one--get some heat going before he freezes his toes and other parts off. |
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headborg
Joined: 06 Nov 2007
Posts: 1105
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| Posted: Fri Dec 14, 2007 9:39 pm Post subject: |
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COLT wrote: Use fresh air, not recirculate, and don't drag snow into your truck from your boots...
Use a "winter front" when it's cold.
Yeah...for you guys up THERE I guess a winter front is pretty much a MUST-
but last time I asked for one--down here in the lower 48- was told Freightliner Century & Columbia--is never suppose to be run with one......
scratches head.....Now why is that? Bob! hey Bob? why is that? you know anything bout that? |
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rank
Joined: 02 Oct 2006
Posts: 1268
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| Posted: Fri Dec 14, 2007 10:16 pm Post subject: |
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-Fresh air huh? I'll try that, I was on recirculate.
-Where is the filter Bob? Quick b4 I tear the whole truck apart. |
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Maniac
Joined: 15 Sep 2004
Posts: 626
Location: Northeast
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| Posted: Sat Dec 15, 2007 1:29 pm Post subject: |
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Quote: Now why is that?
Because you aren't supposed to block the charge air cooler in front of the radiator, will lead to a massive loss of power.
As far as KW goes, there is NO filter that I am aware of, I have had the system apart to change the fan motor and the heater core and NEVER saw a cabin filter or a bunk filter.
There is a fresh air opening on the right hand side behind the air cleaner and it goes straight in the system.
There are after market filters available, but I don't have one.
As far as the drivers window fogging, I think its because the window is warm and when I get in the cold comes off me and fogs it up, been living with it so long it really doesn't bother me. |
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