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Cabin Heater

 
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mikeycrum14  



Joined: 19 Jan 2017
Posts: 112
Location: Juneau, Wisconsin

PostPosted: Tue Mar 28, 2017 5:27 am    Post subject: Cabin Heater Reply with quote

It wont turn off! ideas?
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1981 924 - Alpine White
First car!
Fresh tune up, stage 3 racing clutch, stock otherwise, 5 speed trans. - SOLD
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924RACR  



Joined: 29 Jul 2001
Posts: 8099
Location: Royal Oak, MI, USA

PostPosted: Wed Mar 29, 2017 5:15 am    Post subject: Reply with quote

Which won't turn off - the heat part, or the fan part?
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'79 924 #77 ITB racecar
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mikeycrum14  



Joined: 19 Jan 2017
Posts: 112
Location: Juneau, Wisconsin

PostPosted: Thu Mar 30, 2017 2:35 am    Post subject: Reply with quote

the fan part. the coolant switch works. its stiff and needs replaced but it works.
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1981 924 - Alpine White
First car!
Fresh tune up, stage 3 racing clutch, stock otherwise, 5 speed trans. - SOLD
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Harm  



Joined: 02 Apr 2009
Posts: 1306
Location: Holland

PostPosted: Fri Mar 31, 2017 5:59 am    Post subject: Re: Cabin Heater Reply with quote

mikeycrum14 wrote:
It wont turn off! ideas?

This is standard from ~1980 up…
Key lock in on position activates blower.
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mikeycrum14  



Joined: 19 Jan 2017
Posts: 112
Location: Juneau, Wisconsin

PostPosted: Tue Apr 11, 2017 2:25 am    Post subject: Reply with quote

so the fan is supposed to constantly run?
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1981 924 - Alpine White
First car!
Fresh tune up, stage 3 racing clutch, stock otherwise, 5 speed trans. - SOLD
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Harm  



Joined: 02 Apr 2009
Posts: 1306
Location: Holland

PostPosted: Tue Apr 11, 2017 4:05 am    Post subject: Reply with quote

mikeycrum14 wrote:
so the fan is supposed to constantly run?

Yep. At a very low speed. It has something to do with cabin pressure and exhaust gases versus fahrfergnugen gegenuber Stuttgarter-wiedergutmachschnitzel bla-bla-blah
Cheers.
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Porsche 924 NA 1982 LY7A/A3A3 _ Greater driving pleasure never harmed anyone.
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mikeycrum14  



Joined: 19 Jan 2017
Posts: 112
Location: Juneau, Wisconsin

PostPosted: Tue Apr 11, 2017 5:29 am    Post subject: Reply with quote

anyway to turn it off?
_________________
1981 924 - Alpine White
First car!
Fresh tune up, stage 3 racing clutch, stock otherwise, 5 speed trans. - SOLD
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Harm  



Joined: 02 Apr 2009
Posts: 1306
Location: Holland

PostPosted: Tue Apr 11, 2017 6:46 am    Post subject: Re: Cabin Heater Reply with quote

Not that I'm aware of, other then pulling one of the fuses?

Normally the blower turning at low speed shouldn't be "upsetting".
Couldn't it be a Previous Owner hacked the electrical harness so it runs on a different speed?
Do you have any reference or a 924* nearby to compare its standard speed?
Why is it bothering you; Exhaust gases in the cabin will give you (at least) a headache
Cheerio

*earlier Toofah's don't have this upgrade and are known to have Cabin Fumes
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Porsche 924 NA 1982 LY7A/A3A3 _ Greater driving pleasure never harmed anyone.
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mikeycrum14  



Joined: 19 Jan 2017
Posts: 112
Location: Juneau, Wisconsin

PostPosted: Thu Apr 13, 2017 2:36 am    Post subject: Reply with quote

well, it blowing hot on high speed gets really warm in that cabin... and I might just unplug it for the summer... will go look at a reference if I can find one
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1981 924 - Alpine White
First car!
Fresh tune up, stage 3 racing clutch, stock otherwise, 5 speed trans. - SOLD
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Harm  



Joined: 02 Apr 2009
Posts: 1306
Location: Holland

PostPosted: Thu Apr 13, 2017 6:02 am    Post subject: Re: Cabin Heater Reply with quote

It sounds like you have a different problem then;
If you're unable to stop the coolant flow by flipping the lever,
try it by hand in the engine bay. See number 35 in the image?

#35 is what the cold—hot lever switches; opening or blocking the coolant flow (borrowed from the engines head).
Look under the hood, ~between firewall and underneath the WUR, and switch it by hand so it wil blok the coolant by-pass and you'll have un-heated air entering the cabin…
HTH
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Porsche 924 NA 1982 LY7A/A3A3 _ Greater driving pleasure never harmed anyone.
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mikeycrum14  



Joined: 19 Jan 2017
Posts: 112
Location: Juneau, Wisconsin

PostPosted: Wed Apr 19, 2017 1:12 am    Post subject: Reply with quote

yep I know what you are talking about. how hard is it to replace that valve? mine was pretty stiff
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1981 924 - Alpine White
First car!
Fresh tune up, stage 3 racing clutch, stock otherwise, 5 speed trans. - SOLD
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