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 Just asking.....
Why does the Spyder make a high pitched noise for 40 minutes after shutting down? What purpose does this serve? What continues running that needs to continue running?
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Fan
Sounds like your fan but that's a way long time for it to run after shut down.
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Very Active Member
It should not be 40 minutes, maybe 10.
If memory serves me right, it has to do with something being held closed in the air intake for some time.
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Nope, not referring to the fan. There is a very faint, high pitched tone that can be heard for 30 or 40 minutes and my garage after I shut down.
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Very Active Member
Year and model of Spyder? Could have something with computer completely shutting down.
Artillery lends dignity to what would
otherwise be a vulgar brawl.
******************************
Cognac 2014 RT-S
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Very Active Member
 Gas cap???
Hi  ,
Try loosening the gas cap when you hear the noise. I've lost my high pitch hearing a long time ago so I don't hear anything high pitched.
Just a thought?
Kaos
Kaos----- Gone but not forgotten. 
2014 RTS in Circuit Yellow, farkle-ing addiction down to once every few months. ECU FLASH IS GREAT. 
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Very Active Member
Not sure about 1330 but 998 holds the throttle plate open to avoid flooding on next start. That's the sound you hear.
Sent from my SM-T350 using Tapatalk
2014 Copper RTS
Tri-Axis bars, CB, BajaRon sway bar & shock adjusters, SpyderPop's Bumpskid, NBV peg brackets, LED headlights and modulator, Wolo trumpet air horns, trailer hitch, custom trailer harness, high mount turn signals, Custom Dynamics brake light, LED turn signal lights on mirrors, LED strip light for a dash light, garage door opener, LED lights in frunk, trunk, and saddlebags, RAM mounts and cradles for tablet (for GPS) and phone (for music), and Smooth Spyder belt tensioner.
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Computer will check throttle bodies, and thus the whine. Nanny never sleeps!
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Very Active Member
 Originally Posted by SpyderUSA
Why does the Spyder make a high pitched noise for 40 minutes after shutting down? What purpose does this serve? What continues running that needs to continue running?
You did not share with us what kind of Spyder you are talking about. So I will assume your mystery Spyder has a 998cc engine. Many people do not hear it but that is the sound of the throttle plates being held shut for 40 minutes until your engine cools down. This was a feature added to correct a hot engine no start problem.
2018 F3 LIMITED
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Nice to know
This I did not know, great information. My hearing is shot so I've never heard this on the wife's 998 but now if she notices it I can answer....love the way this forum makes me look smart ;-)
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There you have it....
My hearing has changed but do know it varies in how long you hear it...but  ....
2012 RS sm5 , 998cc V-Twin 106hp DIY brake and park brake Classic Black
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Hi Billy,
Re: a feature added
I'm still new to SpyderLand, what year was this added?
I am going in tomorrow for a hearing test; and I think that I know what they will be telling me. 
Jerry Baumchen
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Very Active Member
Originally Posted by JerryB
Hi Billy,
Re: a feature added
I'm still new to SpyderLand, what year was this added?
I am going in tomorrow for a hearing test; and I think that I know what they will be telling me.
Jerry Baumchen
I think it was added to 2011 RT models and I think added to the 2010s by software update. Not a problem on 2012 and earlier RS because the throttle is mechanical. It's held shut by springs.
Last edited by billybovine; 09-25-2016 at 03:48 PM.
2018 F3 LIMITED
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Originally Posted by kaos
Hi ,
Try loosening the gas cap when you hear the noise. I've lost my high pitch hearing a long time ago so I don't hear anything high pitched.
Just a thought?
Kaos
It is definitely a pressure whine/whistle from the gas cap - open the cap and it will cease immediately.
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Very Active Member
My memory ain't so good, is it? I guess I had it bass akwards! 
2014 Copper RTS
Tri-Axis bars, CB, BajaRon sway bar & shock adjusters, SpyderPop's Bumpskid, NBV peg brackets, LED headlights and modulator, Wolo trumpet air horns, trailer hitch, custom trailer harness, high mount turn signals, Custom Dynamics brake light, LED turn signal lights on mirrors, LED strip light for a dash light, garage door opener, LED lights in frunk, trunk, and saddlebags, RAM mounts and cradles for tablet (for GPS) and phone (for music), and Smooth Spyder belt tensioner.
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Originally Posted by fritzer1
It is definitely a pressure whine/whistle from the gas cap - open the cap and it will cease immediately.
This is a completely unrelated issue...
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Very Active Member
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The 2010s had a little bit of problems getting fired back after, after they had partially cooled-down. This was added to the 2011s to hold the throttle bodies shut for the 40 minute period of time. 
