Buzz noise after engine is turned off...
05-30-2007, 05:37 PM
#1
On the pedobear bandwagon
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Join Date: Mar 2004
Posts: 480
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...
)
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 $300 in parts. Thanks for your opinion.
(If this has been discussed many times before, you have every right to flame me to no end...
)
05-30-2007, 07:42 PM
#2
Member
Join Date: May 2007
Posts: 30
Maybe your noise is different than mine but if you think there is something wrong with your engine mount, go have that checked asap.
See my story here: http://forums.maxima.org/showthread....487272&page=68 (post #2037)
Read some pages after, you'll see some other stories about burned engine mounts.
In my case the engine mount fried the ECU and I had to pay 1900$ to fix it.
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.
05-30-2007, 08:03 PM
#3
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Join Date: May 2007
Posts: 30
Found NTB01-010:
http://www.nissantechinfo.com/nissan...RefNo=NTB01010
In my case the engine mount fried the ECU.
If there is a TSB about this, should the dealership fix the issue for free?
http://www.nissantechinfo.com/nissan...RefNo=NTB01010
In my case the engine mount fried the ECU.
If there is a TSB about this, should the dealership fix the issue for free?
05-30-2007, 08:33 PM
#4
On the pedobear bandwagon
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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.
I was just going to live with the noise... but maybe I won't be able to do that like I had hoped.
05-31-2007, 07:41 AM
#6
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Join Date: Jan 2005
Location: Chicago
Posts: 663
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.
I was just going to live with the noise... but maybe I won't be able to do that like I had hoped.
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!
05-31-2007, 09:08 AM
#7
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..
06-01-2007, 08:34 AM
#12
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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.
over a year now... everything is good.
06-01-2007, 03:52 PM
#13
Junior Member
Join Date: Jul 2005
Posts: 77
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.
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.
03-16-2008, 06:16 PM
#14
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Join Date: Feb 2008
Posts: 3
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.
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.
I have the exact same issue, what is the long term ramifications for leaving the harness unplugged if any?
KSS
03-17-2008, 06:24 PM
#19
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Join Date: Jan 2008
Location: Billerica MA
Posts: 93
03-17-2008, 06:57 PM
#20
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.
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.
03-19-2008, 06:50 PM
#27
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Join Date: Jan 2008
Location: Billerica MA
Posts: 93
Video Of the sound
http://smg.photobucket.com/albums/v7...t=S5000039.flv
http://smg.photobucket.com/albums/v7...t=S5000040.flv
http://smg.photobucket.com/albums/v7...t=S5000039.flv
http://smg.photobucket.com/albums/v7...t=S5000040.flv
Last edited by 00MaximaGXE; 03-19-2008 at 07:04 PM.
03-20-2008, 07:05 PM
#30
03-21-2008, 02:05 PM
#31
That is your motor mount. I would unlug it now. I really didn't feel a difference when I unpluged mine. The front one is little maroon plug almost by the o2 sensors. I don't a pic and I don't know where the rear one is.
05-27-2008, 11:12 AM
#32
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Join Date: May 2008
Location: Los Angeles
Posts: 2
Front Motor mount
I am having this problem now with a after market one. I had the starter replaced this weekend and disconnected the battery and once I reconnected the battery the buzzing noise does not stop at all. I blew a fuse after driving for 20 miles and the car died. Any ideas?
11-16-2008, 01:13 PM
#33
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Join Date: Nov 2008
Location: Kansas City
Posts: 1
I would like to say this forum is amazing..I have had two problems and did nothing but type in a search phrase and found my answers. You all are a real help to a guy that knows very little about motors.
Thanks so much!
Matt
Merriam, KS
Thanks so much!
Matt
Merriam, KS
11-17-2008, 01:41 AM
#34
Junior Member
Join Date: Jul 2005
Posts: 77
I had to change out my starter motor and happen to see the elec. connector for the rear motor mount, so I unplugged it.
I don't think I would have been able to access it without removing the airbox. so if you are trying to disconnect your rear elec. mount connector, take out your airbox and you'll see the connector. It's looks like the front one and has a long wire that runs to the vicinity of the rear mount.
I have them both unplugged just to be safe so that I don't blow out the ECU. At some point I'll probably replace them with ES mounts.
I don't think I would have been able to access it without removing the airbox. so if you are trying to disconnect your rear elec. mount connector, take out your airbox and you'll see the connector. It's looks like the front one and has a long wire that runs to the vicinity of the rear mount.
I have them both unplugged just to be safe so that I don't blow out the ECU. At some point I'll probably replace them with ES mounts.
02-03-2017, 05:20 PM
#35
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Join Date: Aug 2016
Posts: 6
I read somewhere if you disconnect the electronic motor mount harnesses you have to go through a re-learn process for air idle etc something or another? Any of you guys who disconnected your harnesses have to do anything once you disconnected harnesses like I mentioned?
02-03-2017, 05:35 PM
#36
02-03-2017, 05:52 PM
#37
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Join Date: Aug 2016
Posts: 6
I'm not sure where I read it actually nor am I sold it's my Elec Motor Mounts as I turned off my climate control/heater today before shutting off car once today and it didn't occur, but another time thought it did (it was really windy out so wasn't sure). Will have a 2nd person shut it off while I'm under hood tomorrow.
