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10-04-2012, 08:47 AM
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#1 | ||
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Starter Motor
Join Date: Mar 2012
Posts: 6
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Hi,
This might seem like a silly question but the only Falcons I have owned before this one (98 AU Fairmont,modern to me) was an XC and before that an XB and XA. Is it normal for a whirring sound from the engine after you have turned it off? Sort of sounds like a turbo winding down. Also,when its idling there is an intermittent sound that seems to be coming from inside the dash from the passenger side. Sort of sounds like the analogue clock tick but much louder,sort of a double clu-thunk I would have put it down to the climate control doing something except its not going at the time. Any ideas? Cheers. HG |
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10-04-2012, 09:28 AM
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#2 | ||
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Regular Member
Join Date: Oct 2011
Posts: 139
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I get that same "whirring" / "winding down" sound as well on our 1999 AU. I've always wondered if it was normal or not, but I'm guess I'm not the only one!
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10-04-2012, 09:46 AM
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#3 | ||
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Former BTIKD
 
Join Date: Mar 2005
Location: Sunny Downtown Wagga Wagga. NSW.
Posts: 53,197
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Have you had a look under the bonnet to see if the fan is still spinning ?
__________________
Dying at your job is natures way of saying that you're in the wrong line of work.
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10-04-2012, 10:24 AM
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#4 | ||
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FF.Com.Au Hardcore
Join Date: Jan 2012
Location: outback S.A...hiding in a workshop
Posts: 3,513
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my guess would be thermal fans winding down
__________________
--------------------------------------------------------------- G'day....I'm Dave, ...everyone calls me Poppa,..05.. B.A. Fairmont mark II... may your day's be filled with smiles, your life be filled with love, may your children know nothing but happiness and joy, cherish the memory of those who strove before us for they cleared the way, spare a thought for those who serve we owe so much to so many, life and the freedom to enjoy it is a special gift that can be taken away far too soon! |
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10-04-2012, 11:21 AM
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#5 | ||
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FF.Com.Au Hardcore
Join Date: May 2009
Location: Victoria
Posts: 836
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The climate control sound might just be one of the blend door motors. Ie. for heat/cool or air circulation. If you sit idly and change around the air position (face/feet/demist) then there is a grinding noise which might be what you are hearing.
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10-04-2012, 11:33 AM
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#6 | ||
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Starter Motor
Join Date: Mar 2012
Posts: 6
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I will start and stop the motor cold and see if it still whirrs then.
I am not changing air position on the climate air,its off when this noise occurs,but that is the sort of noise it sounds like. I cannot tell if it does it while I am moving as its an AU1 and the cat converter has been removed so its a little throaty. |
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10-04-2012, 01:44 PM
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#7 | ||
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Starter Motor
Join Date: Mar 2012
Posts: 6
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OK,it does not do it cold and does appear to be the thermal fans.
I should have guessed that really,however they are suprisingly noisy from the drivers seat and always seem to be going when the engine is at normal operating temp,rather than cutting in and out as I would have expected. I have just replaced the climate control unit with a reco unit today and the strange noise from the dash seems to have gone,hopefully. I did notice there is a filter in the hose that clips onto the back of the climate control unit,this was chocker full of dust which I cleaned out.Not sure if thats something to do with it. One other question,the fuel flap light is always on the dash . I see there is a sensor fitted to the car body and a metal braket on the fuel flap.Am I correct in assuming something is missing off this bracket? Cheers, HG. |
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10-04-2012, 05:12 PM
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#8 | ||
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FF.Com.Au Hardcore
Join Date: Feb 2005
Location: Melb north
Posts: 12,025
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sometimes you will get noises from vacuum operated flaps and heater controls from behind the dash as Block58 has mentioned, my flaps make a noise as the vacuum builds up or depletes after the engine is shutdown or started at times.
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11-04-2012, 05:27 PM
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#9 | ||
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Walking with God
Join Date: Mar 2005
Location: Melbourne
Posts: 7,321
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Both my AUs make this noise, neither have CC.
I'd guess at the thermos too, but it does it every time I turn the cars off, whether hot or not so. What could it be other than thermos? Interesting thought. When you disconnect and reconnect the battery, you can hear the ECU powering up. I wonder if it could be a similar thing? In any case, the sound is not indicative of any problem. GK
__________________
2009 Mondeo Zetec TDCi - Moondust Silver 2015 Kia Sorento Platinum - Snow White Pearl 2001 Ducati Monster 900Sie - Red Now gone! 1999 AU1 Futura Wagon - Sparkling Burgundy On LPG Want a Full Life? John 10:10 |
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18-04-2012, 01:59 PM
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#10 | |||
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FF.Com.Au Hardcore
Join Date: Jun 2005
Posts: 588
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Quote:
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23-04-2012, 08:58 PM
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#11 | ||
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Walking with God
Join Date: Mar 2005
Location: Melbourne
Posts: 7,321
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Been thinking more about all this.
I reckon the others are right, it's probably the thermo fans, but coming off low speed, not high. GK
__________________
2009 Mondeo Zetec TDCi - Moondust Silver 2015 Kia Sorento Platinum - Snow White Pearl 2001 Ducati Monster 900Sie - Red Now gone! 1999 AU1 Futura Wagon - Sparkling Burgundy On LPG Want a Full Life? John 10:10 |
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23-04-2012, 09:17 PM
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#12 | ||
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Starter Motor
Join Date: Mar 2012
Posts: 6
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Yup its the thermo fans.
Thing is,are they not supposed to cut in and out according to water temp? Seems mine stay on from even before the temp gauge reaches normal. The other noise is something to do with the climate control,as it does it when I turn it off or on as well.But it also does it most of the time as well irrespective of whether or not climate control is on.Drives me nuts,any ideas? |
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23-04-2012, 11:18 PM
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#13 | ||
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Banned
Join Date: Dec 2007
Posts: 3,290
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my thermo fans would do weird things spin when not meant to ect turned out one of the relays was bonned replaced that there back to working normaly so check ur fan relays never know if ones boned the one fan spins to compensate.
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23-04-2012, 11:49 PM
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#14 | ||
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FF.Com.Au Hardcore
Join Date: Feb 2005
Location: Melb north
Posts: 12,025
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yes they cut in and out with the temp , but they come on instantly when the AC is switched on, is yours a v8 or 6? i have heard guys mention the 8`s have something under the left gaurd that ticks iirc.
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24-04-2012, 06:29 AM
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#15 | ||
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Starter Motor
Join Date: Mar 2012
Posts: 6
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Fairmont AU1 6, 300k.
Stock other than the cat has been taken out. |
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24-04-2012, 08:30 AM
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#16 | ||
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Banned
Join Date: Dec 2007
Posts: 3,290
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Could be ur aircon fan constantly spinning inside the car I've heard something under the dash buggers up and the fan stays on Constantly even with ignition off
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24-04-2012, 10:36 AM
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#17 | ||
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rexnet
Join Date: Feb 2010
Location: Adelaide, South Australia
Posts: 3,562
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i can hear a hiss after i turn my car off and AC's been on. its an au its done 300K. its bound to make some odd noise's
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Strange noises.
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