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thisisgoodnews's Avatar
 
Join Date: Jul 2017
Location: Vilnius, Lithuania
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Porsche Crest Fan in an engine bay keeps running with engine and ignition off

(Most probably) a fan in an engine bay keeps running after a drive when engine and ignition are off. Engine is warm. Fans stops when lights get shut off.

What to address first? What is it and does it have to behave like this?

https://youtu.be/HqGplt8NbEA

Old 11-22-2019, 05:16 AM
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Join Date: Jul 2008
Location: Next to Mulholland [west]
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what year and model?
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RGruppe #79 '73 Carrera RS spec 2.7 MFI
00 Saab 95 Aero wagon stick
01 Saab 95 Aero wagon auto
03 Boxster
90 Chevy PU Prerunner....1990
Old 11-22-2019, 06:26 AM
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proporsche's Avatar
 
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it looks like 1985 Carrera..
Did you do any work on the 911 we need to know about?
I would start with the engine compartment relay ,under the cover ..

Ivan
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1985 911 with original 501 761 miles...807 506 km
"The difference between genius and stupidity is that, genius has its limits". Albert Einstein.
Old 11-22-2019, 06:54 AM
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The only electrical fan back there is the heater/blower fan. Not as familiar with the Carrera as the SC system, but on the SC, that blower is controlled by the heater controls between the seats.
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Mark

'83 SC Targa - since 5/5/2001
'06 911 S Aerokit - from 5/2/2016 to 11/14/2018
'11 911 S w/PDK - from 7/2/2021 to ???
Old 11-22-2019, 06:56 AM
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here is some reading
heater blower relay on 84 carrera

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1985 911 with original 501 761 miles...807 506 km
"The difference between genius and stupidity is that, genius has its limits". Albert Einstein.
Old 11-22-2019, 07:08 AM
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