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05-30-2007, 06:37 PM
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#1
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On the pedobear bandwagon
Join Date: Mar 2004
Posts: 478
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Buzz noise after engine is turned off...
I did a quick search and couldn't find anything... but I have a noise after I shut my car off that lasts for about 5 seconds. I had my dad check it out (technician at the dealership...) and he found a service bulletin that only applies to auto trannies in maximas built before October 2, 2000 and it is titled "Buzz noise after engine is turned off". I saw a link called "buzz noise" in the service bulletin sticky, but it's dead. I have the bulletin printed out, I'd be glad to provide it when I get home if you want to see it.
My questions are, why in the h*ll do we have electronically controlled motor mounts? Never heard of that before.
What are the negative things that will happen if I don't replace the motor mounts? I can't tell any difference with them being bad... it just makes that dang noise when I shut the car off.
My dad doesn't think that I NEED to replace them... but I don't want anything to happen. My cost will be about $300 in parts. Thanks for your opinion.
(If this has been discussed many times before, you have every right to flame me to no end...  )
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05-30-2007, 08:42 PM
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#2
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Junior Member
Join Date: May 2007
Posts: 26
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Maybe your noise is different than mine but if you think there is something wrong with your engine mount, go have that checked asap.
See my story here: http://forums.maxima.org/showthread....487272&page=68 (post #2037)
Read some pages after, you'll see some other stories about burned engine mounts.
In my case the engine mount fried the ECU and I had to pay 1900$ to fix it. |
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05-30-2007, 09:33 PM
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#4
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On the pedobear bandwagon
Join Date: Mar 2004
Posts: 478
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Nope... TSB doesn't mean recall. My dad said that when that bulletin came out, they probably offered replacement mounts at a reduced rate... but i'm stuck spending about 300 bucks for the two parts (as opposed to 400 for regular customers).. so it's that serious of a problem that it fried the ECU!?!?!?
I was just going to live with the noise... but maybe I won't be able to do that like I had hoped.
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05-31-2007, 07:18 AM
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#5
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Junior Member
Join Date: May 2007
Posts: 26
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The guy at the dealership said this was an issue with Maxima 2k and 2k1; engine mounts burning the ECU. The issue was fixed after 2k1 model.
Also the ECU I have now has a different P/N than the one I had before.
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05-31-2007, 08:41 AM
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#6
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Senior Member
Join Date: Jan 2005
Posts: 583
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Quote:
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Originally Posted by jdmaxima89
Nope... TSB doesn't mean recall. My dad said that when that bulletin came out, they probably offered replacement mounts at a reduced rate... but i'm stuck spending about 300 bucks for the two parts (as opposed to 400 for regular customers).. so it's that serious of a problem that it fried the ECU!?!?!?
I was just going to live with the noise... but maybe I won't be able to do that like I had hoped.
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Same problem I had about a year or 2 ago! I would shut the car off and there would be a buzzing noise for about 3 seconds. I used to notice all the time when I shut the car off. Then all of a sudden one day last year it totally stopped making the noise! The engine and ecu has been fine ever since so I figured maybe it just fixed itself unless it is just totally dead! Since I haven't heard the noise I figured I would be unable to take it to the stealership as they would probably say nothing is wrong since they do not hear any buzzing noise! I do have an extended warranty til 100k or Oct '08 and currently the car has 90k, so if the noise comes back maybe I should take it to the stealership!
Good luck with your scenario jdmaxima89!
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05-31-2007, 10:08 AM
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#7
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Senior Member
Join Date: Jul 2003
Location: New Britain, CT
Posts: 203
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Had the same problem... front mount would make noise for 3-6 seconds and it would stop... one day it started making noise and it would never stop ;-) so i unplugged the harness.. Called my friendly Nissan tech, he told me its $300+ to get it replaced (ouch) , and he said that if i don't want to replace it i can drive with it unplugged. it was over a year ago.. ;-) its still unplugged..
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05-31-2007, 11:33 AM
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#8
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On the pedobear bandwagon
Join Date: Mar 2004
Posts: 478
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Hmmm... I may consider unplugging it then. Thats the cheapest way lol.
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05-31-2007, 12:24 PM
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#9
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Senior Member
Join Date: Jul 2003
Location: New Britain, CT
Posts: 203
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Yup... I don't see any side effects of doing that.. so it is the cheapest fix possible ;-)
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05-31-2007, 01:05 PM
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#10
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On the pedobear bandwagon
Join Date: Mar 2004
Posts: 478
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Quote:
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Originally Posted by piotroosh
Yup... I don't see any side effects of doing that.. so it is the cheapest fix possible ;-)
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you didn't even get a check engine light?
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06-01-2007, 07:22 AM
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#11
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Senior Member
Join Date: Jul 2003
Location: New Britain, CT
Posts: 203
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Quote:
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Originally Posted by jdmaxima89
you didn't even get a check engine light?
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nope. confirmed by nissan tech that this will not cause CEL.
over a year now... everything is good. |
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06-01-2007, 09:34 AM
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#12
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On the pedobear bandwagon
Join Date: Mar 2004
Posts: 478
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Quote:
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Originally Posted by piotroosh
nope. confirmed by nissan tech that this will not cause CEL.
over a year now... everything is good.
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Cool... that's probably what I'm going to end up doing then. My dad said that the main purpose of the electronically controlled engine mount is that it pretty much holds the motor "tighter" while you are idling. That's why we hear it when we are either slowing down to a stop, or shut the car off.. or in my case, both.
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06-01-2007, 04:52 PM
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#13
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Member
Join Date: Jul 2005
Posts: 74
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Quote:
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Originally Posted by jdmaxima89
Cool... that's probably what I'm going to end up doing then. My dad said that the main purpose of the electronically controlled engine mount is that it pretty much holds the motor "tighter" while you are idling. That's why we hear it when we are either slowing down to a stop, or shut the car off.. or in my case, both.
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With the harness unplugged, would it leave the engine mount bushings in the 'soft/loose' state?
I looked over the FSM diagrams (2001 FSM Pages EC-625 to EC-628) and interpreted it as (could be wrong):
Below 2000 RPM, engine mounts: Soft
Above 2000 RPM, engine mounts: Hard
I was going to unplug mine too, but thought it may leave the mounts in a permanent soft state. I haven't heard the noises, but would like to keep them unplugged to keep the ECU safe. |
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03-16-2008, 07:16 PM
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#14
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Newbie - Just Registered
Join Date: Feb 2008
Posts: 3
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Quote:
Originally Posted by A33Black
With the harness unplugged, would it leave the engine mount bushings in the 'soft/loose' state?
I looked over the FSM diagrams (2001 FSM Pages EC-625 to EC-628) and interpreted it as (could be wrong):
Below 2000 RPM, engine mounts: Soft
Above 2000 RPM, engine mounts: Hard
I was going to unplug mine too, but thought it may leave the mounts in a permanent soft state. I haven't heard the noises, but would like to keep them unplugged to keep the ECU safe.
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I have the exact same issue, what is the long term ramifications for leaving the harness unplugged if any?
KSS |
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03-16-2008, 07:37 PM
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#15
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Senior Member
Join Date: Apr 2003
Posts: 1,767
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How do you unplug them, where is the connector for them?
And do the 5 speeds have electronic mounts?
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03-17-2008, 04:27 PM
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#16
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Member
Join Date: Jan 2008
Location: Billerica MA
Posts: 90
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Who cares about the buzzing sound, it doesn't bother me...Plus I don't need a bracket in my engine if I got on it hard
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03-17-2008, 05:08 PM
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#17
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Senior Member
Join Date: Apr 2003
Posts: 1,767
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The buzzing sound indicates there is a bigger issue, its not the sound itself I believe. No one wants their car to catch on fire
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03-17-2008, 07:15 PM
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#18
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Member
Join Date: Jan 2008
Location: Billerica MA
Posts: 90
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Quote:
Originally Posted by ohannon7
The buzzing sound indicates there is a bigger issue, its not the sound itself I believe. No one wants their car to catch on fire
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How would it cause a fire? |
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03-17-2008, 07:24 PM
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#19
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Member
Join Date: Jan 2008
Location: Billerica MA
Posts: 90
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Quote:
Originally Posted by ohannon7
The buzzing sound indicates there is a bigger issue, its not the sound itself I believe. No one wants their car to catch on fire
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How would it cause a fire?
EDIT: If it continued to keep buzzing got it...  |
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03-17-2008, 07:57 PM
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#20
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Klipsch > All
Join Date: May 2007
Location: NC, OH
Posts: 54
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5spds don't have electronic motor mounts.
I have a buzzing sound after i turn the car off, and a squeal at around 2k rpm (where it apparently stiffens) when accelerating. I cant figure out the cause of either...but apparently they are unrelated.
I have just replaced both lower mounts with ES inserts with no change in these sounds (ES bushings are awesome otherwise)
Therefore the sound you guys are hearing could possibly be from something else.
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03-18-2008, 08:51 AM
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#21
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Senior Member
Join Date: Apr 2003
Posts: 1,767
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Quote:
Originally Posted by ChevelleRH
5spds don't have electronic motor mounts.
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thanks
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We, the willing, led by the unknowing, have been doing the impossible for the ungrateful. We have been doing so much, for so long, with so little, we are now qualified to do anything with nothing
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03-18-2008, 03:18 PM
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#22
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Wants the EVO X
Join Date: Dec 2001
Location: The Lake, MN
Posts: 3,090
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I had my front one replaced. Mine started making a whining noise once you reved the motor. I unplugged it til I got a new one. I get the buzz noise still but my rear is still fine.
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03-18-2008, 07:33 PM
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#23
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Junior Member
Join Date: Aug 2005
Posts: 23
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Actually I have a 2k2 SE 6MT and I have a buzzing(or distance horn) after I shut my engine off but I figured it was a capacitor or something. If this is an A/T problem only has anyone else with a M/T heard a similar sounds.
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03-18-2008, 07:56 PM
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#24
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Senior Member
Join Date: Apr 2003
Posts: 1,767
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I thought i have heard the noise too. How loud is it?
kind of like when the buzzer for an older dryer goes off?
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We, the willing, led by the unknowing, have been doing the impossible for the ungrateful. We have been doing so much, for so long, with so little, we are now qualified to do anything with nothing
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03-18-2008, 10:15 PM
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#25
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Senior Member
Join Date: May 2006
Posts: 1,052
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mine has like a buzz buzz tick tick buzz and lasts about 3-5 seconds.. shes been doing it forever like a year + and have had no problems.. so idk
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03-19-2008, 04:07 PM
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#26
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Member
Join Date: Nov 2007
Location: Houston, Tx
Posts: 69
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same here most specially whens its cold. it happens everytime i shut off the car or rev it.
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03-19-2008, 07:50 PM
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#27
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Member
Join Date: Jan 2008
Location: Billerica MA
Posts: 90
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Last edited by 00MaximaGXE; 03-19-2008 at 08:04 PM.
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03-19-2008, 07:57 PM
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#28
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Newbie - Just Registered
Join Date: Feb 2008
Posts: 3
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Does anyone know how to unplug the harness to the motor mounts so it doesn't make this noise?
thx
kss
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03-19-2008, 10:05 PM
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#29
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Senior Member
Join Date: May 2006
Posts: 1,052
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i always thought it was the electronic motor mounts like correcting something..
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03-20-2008, 08:05 PM
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#30
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Senior Member
Join Date: Sep 2007
Location: Omaha, NE
Posts: 1,106
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Quote:
Originally Posted by mist max2000
i always thought it was the electronic motor mounts like correcting something..
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the aircon does make a noise when you turn it off or turn your car off with it on. |
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03-21-2008, 03:05 PM
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#31
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