Transmission buzz at shift - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Vinny · 09-02-2008, 04:34 PM

Alright, so this has been going on for about a week now.

Everytime I shift/engage the clutch there's a weird buzzing sound.
Gears don't grind, Clutch doesn't slip, No leaks, Tranny fluid was replaced about 4 months back. There's no way to check tranny fluid level, is there? Also I asked some other friends of mine...one said syncros were going (which I highly doubt) and then my bro said possibly the flywheel?

Any suggestions in whats wrong or what I could do?
I mean, if I'm gonna take the tranny apart, I'm gonna might as well replace clutch/flywheel...just wondering if anyone else had this kind of problem.

Thanks for any help.

punxva · 09-02-2008, 04:37 PM

you can take the side plug out of the tranny with the car jacked up, and put your finger in, it it's right at the bottom of your finger then it's fine, also could be your throwout bearing.

Vinny · 09-02-2008, 05:42 PM

where and how much can I get a TOB?
Never even heard of the term...I'm noob. bash me. -.-

nismo racer · 09-02-2008, 07:43 PM

it could also be the the syncros are busted.

soreballz · 09-03-2008, 01:00 AM

Bad pilot bushings make sort of a buzzing sound when you clutch in and hit the gas...

sil80forme · 09-03-2008, 06:58 AM

If the buzz is when u are shifting and the clutch is engeged then ur throw out bearing (tob) is bad....

sil80forme · 09-03-2008, 06:59 AM

Quote:

Originally Posted by nismo racer

it could also be the the syncros are busted.

if the the syncros were busted it wouldnt go into gear at all and or grind like hell when goin into gear...which he states doesnot happen

Vinny · 09-03-2008, 08:46 AM

Thats what I thought as well.
Thanks guys, really appreciate it!

I actually only hear the buzz if I'm shifting over 3k rpms
and it's when I push the clutch pedal in

Vinny · 09-03-2008, 12:34 PM

Just got back from lunch.
I left it in 3rd gear and went up to 4500 rpms and then let go and I actually heard the buzzing sound. Would the bearing still make a noise or could it be something else now?

***S14DB*** · 09-03-2008, 01:21 PM

Is it only when the clutch is disengaged or when you have pressure on the clutch pedal? Are you holding the shift knob when it buzzes?

Sounds like a Input/Pilot Bushing.

Vinny · 09-03-2008, 02:01 PM

When I disengage the clutch it buzzes but it also buzzed when I went to higher rpms and let go. It was my first time today actually hearing it do that.
I usually hold the shiftknob lightly when I'm driving, but not holding onto dear life with it or using it as an elbow rest or whatever.

How unsafe is it driving around on right now? This is a daily driver.

Dream240 · 09-03-2008, 02:14 PM

Quote:

Originally Posted by S14DB

Sounds like a Input/Pilot Bushing.

Bingo.

That sound is actually a harmonic vibration caused by having too much free play on your input shaft. The free play is coming from having that brass bushing worn down to practically nothing. The sound will get worse until the bushing completely disintegrates. Then you will have input shaft on crank shaft direct contact.....not good.

Do a complete clutch job and this will go away. Also make sure to lube up your new pilot bushing real good. You want it to last you in between clutches.

GL

Vinny · 09-03-2008, 02:24 PM

well if that wasn't the most detailed and precise answer yet.
Thank you good sir!

So I guess I really shouldn't be driving my car right now. damn.

09-02-2008, 04:34 PM	#1
Vinny Zilvia Addict Join Date: Nov 2006 Location: Anaheim, CA Posts: 610 Trader Rating: (1) Feedback Score: 1 reviews	Transmission buzz at shift Alright, so this has been going on for about a week now. Everytime I shift/engage the clutch there's a weird buzzing sound. Gears don't grind, Clutch doesn't slip, No leaks, Tranny fluid was replaced about 4 months back. There's no way to check tranny fluid level, is there? Also I asked some other friends of mine...one said syncros were going (which I highly doubt) and then my bro said possibly the flywheel? Any suggestions in whats wrong or what I could do? I mean, if I'm gonna take the tranny apart, I'm gonna might as well replace clutch/flywheel...just wondering if anyone else had this kind of problem. Thanks for any help. __________________ Kolab Agency \| Limitless Society

09-02-2008, 05:42 PM	#3
Vinny Zilvia Addict Join Date: Nov 2006 Location: Anaheim, CA Posts: 610 Trader Rating: (1) Feedback Score: 1 reviews	where and how much can I get a TOB? Never even heard of the term...I'm noob. bash me. -.- __________________ Kolab Agency \| Limitless Society

09-02-2008, 07:43 PM	#4
nismo racer Zilvia FREAK! Join Date: Feb 2008 Location: the 805! Posts: 1,057 Trader Rating: (17) Feedback Score: 17 reviews	it could also be the the syncros are busted. __________________ PEGASUS

09-03-2008, 06:58 AM	#6
sil80forme Zilvia Junkie Join Date: Jan 2005 Location: philadelphia, pa Age: 40 Posts: 487 Trader Rating: (0) Feedback Score: 0 reviews	Trans buzz If the buzz is when u are shifting and the clutch is engeged then ur throw out bearing (tob) is bad....

09-03-2008, 08:46 AM	#8
Vinny Zilvia Addict Join Date: Nov 2006 Location: Anaheim, CA Posts: 610 Trader Rating: (1) Feedback Score: 1 reviews	Thats what I thought as well. Thanks guys, really appreciate it! I actually only hear the buzz if I'm shifting over 3k rpms and it's when I push the clutch pedal in __________________ Kolab Agency \| Limitless Society

09-03-2008, 12:34 PM	#9
Vinny Zilvia Addict Join Date: Nov 2006 Location: Anaheim, CA Posts: 610 Trader Rating: (1) Feedback Score: 1 reviews	Just got back from lunch. I left it in 3rd gear and went up to 4500 rpms and then let go and I actually heard the buzzing sound. Would the bearing still make a noise or could it be something else now? __________________ Kolab Agency \| Limitless Society

09-03-2008, 01:21 PM	#10
*S14DB* AFC #1 Join Date: Oct 2003 Location: 昨晩あなたのお母さんの家 Posts: 20,181 Trader Rating: (3) Feedback Score: 3 reviews	Is it only when the clutch is disengaged or when you have pressure on the clutch pedal? Are you holding the shift knob when it buzzes? Sounds like a Input/Pilot Bushing. __________________ Comments should be taken as Opinions not as Statements of Fact

09-03-2008, 02:01 PM	#11
Vinny Zilvia Addict Join Date: Nov 2006 Location: Anaheim, CA Posts: 610 Trader Rating: (1) Feedback Score: 1 reviews	When I disengage the clutch it buzzes but it also buzzed when I went to higher rpms and let go. It was my first time today actually hearing it do that. I usually hold the shiftknob lightly when I'm driving, but not holding onto dear life with it or using it as an elbow rest or whatever. How unsafe is it driving around on right now? This is a daily driver. __________________ Kolab Agency \| Limitless Society

09-03-2008, 02:24 PM	#13
Vinny Zilvia Addict Join Date: Nov 2006 Location: Anaheim, CA Posts: 610 Trader Rating: (1) Feedback Score: 1 reviews	well if that wasn't the most detailed and precise answer yet. Thank you good sir! So I guess I really shouldn't be driving my car right now. damn. __________________ Kolab Agency \| Limitless Society

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode