04-28-2016, 10:04 AM
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#1
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Registered User
Join Date: Feb 2007
Location: malta
Posts: 210
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engine bay fan
I don't seem to recall ever hearing my engine bay fan working, but then again, I might not have realized that it was on maybe whilst I was driving. How can I check if it works, point a heat gun at the sensor perhaps? I checked the fuse and it seems to be ok. Does anyone know when I should be expecting it to go on?
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04-28-2016, 10:15 AM
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#2
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01101
Join Date: Jul 2015
Location: CT
Posts: 587
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Mine has only ever run on days that are over 90F. Its pretty rare.
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04-28-2016, 10:27 AM
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#3
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There Is No Substitute.
Join Date: May 2007
Location: West Coast
Posts: 3,253
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The fan is controlled by the DME, and it has a few triggers for coming on. The most common one is the engine bay temp exceeding 180° F. It should not be running regularly, for me it most commonly comes on on very hot days or in slow traffic.
http://986forum.com/forums/general-discussions/11234-engine-compartment-fan.html
__________________
1999 Ocean Blue Metallic Boxster - blueboxster.com
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04-28-2016, 10:52 AM
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#4
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Registered User
Join Date: Feb 2007
Location: malta
Posts: 210
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But is there a way to know that the fan does work?
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04-28-2016, 10:56 AM
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#5
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There Is No Substitute.
Join Date: May 2007
Location: West Coast
Posts: 3,253
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__________________
1999 Ocean Blue Metallic Boxster - blueboxster.com
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04-28-2016, 11:03 AM
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#6
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Registered User
Join Date: Feb 2007
Location: malta
Posts: 210
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Quote:
Originally Posted by rick3000
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If I jumper the relay, how would I know if the relay is working? Wouldn't it be easier heating up the sensor ?
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04-28-2016, 11:35 AM
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#7
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Registered User
Join Date: Feb 2005
Location: It's a kind of magic.....
Posts: 6,553
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Quote:
Originally Posted by boxster
If I jumper the relay, how would I know if the relay is working? Wouldn't it be easier heating up the sensor ?
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It would be one Hell of a lot easier to just connect your Durametric and switch it on.............
__________________
“Anything really new is invented only in one’s youth. Later, one becomes more experienced, more famous – and more stupid.” - Albert Einstein
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04-28-2016, 11:41 AM
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#8
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Registered User
Join Date: Feb 2007
Location: malta
Posts: 210
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Quote:
Originally Posted by JFP in PA
It would be one Hell of a lot easier to just connect your Durametric and switch it on.............
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I would if I had a durametric, but I don't have one unfortunately!
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04-28-2016, 03:36 PM
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#9
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Registered User
Join Date: Jul 2013
Location: Bastrop, Tx
Posts: 2,644
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A quick way to check the fan itself is just unplug it from the harness and hook up a +&- to it. It's only a simple fan motor
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Woody
Last edited by itsnotanova; 04-28-2016 at 03:38 PM.
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05-30-2016, 02:09 PM
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#10
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Registered User
Join Date: Nov 2013
Location: Colorado
Posts: 442
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Quote:
Originally Posted by boxster
I would if I had a durametric, but I don't have one unfortunately!
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You bought a Porsche, but a Durametric!  It will pay for itself in short order.
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05-30-2016, 08:24 PM
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#11
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Certified Boxster Addict
Join Date: Nov 2010
Location: Los Angeles
Posts: 7,669
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Quote:
Originally Posted by boxster
If I jumper the relay, how would I know if the relay is working? Wouldn't it be easier heating up the sensor ?
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When you jumper the fan relay, the relay is taken out of the circuit. With the jumper in place, the fan should turn on - if it doesn't, then the fan or wiring is the problem.
Please take a look at the link that Rick posted for details on how to jumper around the relay: http://986forum.com/forums/diy-project-guides/60239-engine-compartment-fan-manual-switch.html
__________________
1999 996 C2 - sold - bought back - sold for more
1997 Spec Boxster BSR #254
1979 911 SC
POC Licensed DE/TT Instructor
Last edited by thstone; 05-30-2016 at 08:28 PM.
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06-03-2016, 08:42 PM
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#12
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Registered User
Join Date: Jan 2013
Location: Houston
Posts: 370
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Also try turning the key back to ON after a long drive and turning off the engine. I've heard that fan kick on a couple times I've done that.
__________________
DD summer/winter: 2000 Boxster S
DD spring/fall: 914-6 w/ 3.0L SC Dual Webers
http://imgur.com/a/k0Wtl - My 914-6 Build/Project Story
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06-16-2016, 07:40 PM
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#13
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Registered User
Join Date: Jul 2012
Location: Scottsdale, AZ
Posts: 174
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Since I live in az and we are scheduled to hit 120 degrees this year, I have though of wiring both radiator fans and my engine fan to either a toggle or to my AEM gauge to trigger it when I hit a certain temp.
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