Terrible grinding noise while reversing

erisha · 07-25-2007, 11:52 PM

I just got my '07 civic si sedan today and i've noticed that while reversing, it makes this really ugly grinding/buzzing kinda noise on top of the engine noise. does anybody have any idea what might be causing this? =/

nayilsi · 07-25-2007, 11:54 PM

i dont know what grinds sounds like.... but yes I do have sum weird ass sound while reversing.... its natural

congrats.... what color.... IL KILL U IF ITS NHBP

Si_Chick · 07-26-2007, 12:03 AM

I doubt it's grinding you're hearing... it's normal for their to be a sound, kind of like a "buzzing" when you're in reverse.

-Sylver- · 07-26-2007, 12:50 AM

Quote:

Originally Posted by Si_Chick

I doubt it's grinding you're hearing... it's normal for their to be a sound, kind of like a "buzzing" when you're in reverse.

A high pitched Wind noise? Thats a honda reversing for ya

Subaru71 · 07-26-2007, 01:04 AM

yep its normal on hondas..

20civic07 · 07-26-2007, 01:10 AM

somtimes while going into reverse and then pushing clutch into neutral then shifting to first gear ( while the car is still slightly going backwards ) my gears will grind....

Tastycakes · 07-26-2007, 01:16 AM

Quote:

Originally Posted by erisha

I just got my '07 civic si sedan today and i've noticed that while reversing, it makes this really ugly grinding/buzzing kinda noise on top of the engine noise. does anybody have any idea what might be causing this? =/

The reverse gear is straight cut (vs angled cut like the forward gears for strength) so it make a whining noise when moving. (probably done on purpose, when anyone hears that sound they know a car is backing up) It also gets no synchros so you cant be moving back or forward at all when putting it into R.

garrnew · 07-26-2007, 06:13 AM

^word. Its a spur gear rather than a helical gear. You'll hear a bad noise if you go in R while moving forward, don't do that. It's normal to hear a mechanical/non-grinding noise while in R and moving backwards just because the whole tooth is making contact at the same time.

***FBP FG2*** · 07-26-2007, 06:54 AM

I have an 06 si and the only times I ever hear a grinding sound is when the car is rolling back because of the slope on the driveway and I try to shift into reverse while it's still moving. Are you moving when your shifting into reverse?

1stk20z3 · 07-26-2007, 06:56 AM

i thought it was a reverse supercharger. LOL!
as for a grind just dont try to put it in reverse while you are rolling backwars it'll grind like crazy.

dnbsi · 07-26-2007, 10:54 AM

that brings up an interesting question, what do you do if you're on a driveway or other hill and need to put it in R? do you just put it in neutral and let it roll back?

Subaru71 · 07-26-2007, 04:58 PM

You make sure u hold the brake pedal while u shift into R

the car must not move while you shift into R because the gear is not syncronized (as said above)

***Swank*** · 07-26-2007, 05:04 PM

And if it's a bit hard to get it in reverse, toss it in any other gear first then throw it in reverse, should slide in easy.

Veazy · 07-27-2007, 12:20 AM

is it bad to shift out of reverse while moving?

mhuynh · 07-27-2007, 01:38 AM

^^^I would like to know this also. I do this almost all the time.

Tastycakes · 07-27-2007, 05:19 AM

I wouldnt think itd be bad to shift out of reverse while moving. As long as it pulls out of gear easy.

garrnew · 07-27-2007, 08:51 AM

I don't think so. I wouldn't do that going in reverse too fast, try to stop as much as possible since your clutch has to change direction then get the wheels up to speed.

si_civic · 07-27-2007, 09:35 AM

It would be sweet if 1-4 had this too. (5+6 wouldn't for highway)

Agnt004 · 07-27-2007, 09:42 AM

More info on gears:

http://science.howstuffworks.com/gear3.htm

http://science.howstuffworks.com/gear3.htm

CZ-75 · 07-27-2007, 10:35 AM

The sound of straight cut gears in action:

http://vids.myspace.com/index.cfm?fu...eoID=865343956

07-25-2007, 11:52 PM	#1 (permalink)
erisha Junior Member Join Date: Jul 2007 Posts: 14 iTrader: 0 / 0%	Terrible grinding noise while reversing I just got my '07 civic si sedan today and i've noticed that while reversing, it makes this really ugly grinding/buzzing kinda noise on top of the engine noise. does anybody have any idea what might be causing this? =/

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07-25-2007, 11:54 PM	#2 (permalink)
nayilsi Senior Member Join Date: Jul 2007 Location: service oil life 5% Posts: 8,591 iTrader: 0 / 0%	i dont know what grinds sounds like.... but yes I do have sum weird ass sound while reversing.... its natural congrats.... what color.... IL KILL U IF ITS NHBP

07-26-2007, 12:03 AM	#3 (permalink)
Si_Chick Senior Member Join Date: Aug 2006 Location: Ottawa Age: 23 Posts: 2,649 E-bitch iTrader: 0 / 0%	I doubt it's grinding you're hearing... it's normal for their to be a sound, kind of like a "buzzing" when you're in reverse.

07-26-2007, 01:04 AM	#5 (permalink)
Subaru71 Senior Member Join Date: Jul 2007 Location: Southern California Posts: 118 dSLR Squad #32 iTrader: 1 / 100%	yep its normal on hondas..

07-26-2007, 01:10 AM	#6 (permalink)
20civic07 Senior Member Join Date: Mar 2007 Posts: 1,572 iTrader: 13 / 100%	somtimes while going into reverse and then pushing clutch into neutral then shifting to first gear ( while the car is still slightly going backwards ) my gears will grind....

07-26-2007, 06:13 AM	#8 (permalink)
garrnew Senior Member Join Date: May 2007 Location: Philly Posts: 108 Garrett iTrader: 0 / 0%	^word. Its a spur gear rather than a helical gear. You'll hear a bad noise if you go in R while moving forward, don't do that. It's normal to hear a mechanical/non-grinding noise while in R and moving backwards just because the whole tooth is making contact at the same time.

07-26-2007, 06:54 AM	#9 (permalink)
*FBP FG2* Yeah... that's me Join Date: Jul 2007 Location: Irvine, CA Age: 19 Posts: 701 iTrader: 5 / 100%	I have an 06 si and the only times I ever hear a grinding sound is when the car is rolling back because of the slope on the driveway and I try to shift into reverse while it's still moving. Are you moving when your shifting into reverse?

07-26-2007, 06:56 AM	#10 (permalink)
1stk20z3 Senior Member Join Date: Apr 2006 Location: Hawaii Age: 20 Posts: 1,804 Casey iTrader: 0 / 0%	i thought it was a reverse supercharger. LOL! as for a grind just dont try to put it in reverse while you are rolling backwars it'll grind like crazy.

07-26-2007, 10:54 AM	#11 (permalink)
dnbsi Senior Member Join Date: Apr 2007 Posts: 960 iTrader: 0 / 0%	that brings up an interesting question, what do you do if you're on a driveway or other hill and need to put it in R? do you just put it in neutral and let it roll back?

07-26-2007, 04:58 PM	#12 (permalink)
Subaru71 Senior Member Join Date: Jul 2007 Location: Southern California Posts: 118 dSLR Squad #32 iTrader: 1 / 100%	You make sure u hold the brake pedal while u shift into R the car must not move while you shift into R because the gear is not syncronized (as said above)

07-26-2007, 05:04 PM	#13 (permalink)
*Swank* Glowaholic Join Date: Mar 2007 Location: Alberta Posts: 546 Mike iTrader: 0 / 0%	And if it's a bit hard to get it in reverse, toss it in any other gear first then throw it in reverse, should slide in easy.

07-27-2007, 12:20 AM	#14 (permalink)
Veazy Junior Member Join Date: Feb 2007 Location: Columbus Ohio Age: 18 Posts: 7 iTrader: 0 / 0%	is it bad to shift out of reverse while moving?

07-27-2007, 01:38 AM	#15 (permalink)
mhuynh Senior Member Join Date: Feb 2007 Posts: 625 iTrader: 2 / 100%	^^^I would like to know this also. I do this almost all the time.

07-27-2007, 05:19 AM	#16 (permalink)
Tastycakes Senior Member Join Date: Feb 2007 Location: NW Suburbs of Chicago Age: 25 Posts: 2,596 Mike iTrader: 0 / 0%	I wouldnt think itd be bad to shift out of reverse while moving. As long as it pulls out of gear easy.

07-27-2007, 08:51 AM	#17 (permalink)
garrnew Senior Member Join Date: May 2007 Location: Philly Posts: 108 Garrett iTrader: 0 / 0%	I don't think so. I wouldn't do that going in reverse too fast, try to stop as much as possible since your clutch has to change direction then get the wheels up to speed.

07-27-2007, 09:35 AM	#18 (permalink)
si_civic Senior Member Join Date: Jul 2006 Location: B.C. ,Canada Age: 30 Posts: 4,604 A/Cst.D.F.Abate iTrader: 10 / 100%	It would be sweet if 1-4 had this too. (5+6 wouldn't for highway)

07-27-2007, 09:42 AM	#19 (permalink)
Agnt004 Senior Member Join Date: May 2007 Location: South Florida Age: 22 Posts: 1,604 Greg iTrader: 4 / 100%	More info on gears: http://science.howstuffworks.com/gear3.htm http://science.howstuffworks.com/gear3.htm

07-27-2007, 10:35 AM	#20 (permalink)
CZ-75 Senior Member Join Date: Aug 2006 Location: Tri-state Posts: 1,248 Brian iTrader: 0 / 0%	The sound of straight cut gears in action: http://vids.myspace.com/index.cfm?fu...eoID=865343956