Loud pronounced buzzing/humming noise ...
Loud pronounced buzzing/humming noise ...
Hi, there is this sound when my car is parked - gear in neutral or first and foot can be on or off the clutch -- and the car buzzes really loud. I gas the car -- it goes away -- usually doesn't come back until I put it back into first. I can then put it into neutral -- and the buzzing remains. It usually only does this on the first and second start up for the day -- afterwords, it doesn't return until tomorrow. What is it and how can I make it go away.
Update:
I know how to create the sound which may help some of you in diagnosising the problem. With the clutch pressed in at idle (not moving), I gas the car and let off the gas -- the noise comes and lasts for as long as I have the clutch depressed. When I release the clutch, the sound disappears. This is the only time that is makes the sound. With clutch depressed and no gas -- it does not make the sound. It only comes with the clutch depressed and if I gas it at idle, let off gas and it makes the terribly loud noise. What causes this and how do I fix it?
I know how to create the sound which may help some of you in diagnosising the problem. With the clutch pressed in at idle (not moving), I gas the car and let off the gas -- the noise comes and lasts for as long as I have the clutch depressed. When I release the clutch, the sound disappears. This is the only time that is makes the sound. With clutch depressed and no gas -- it does not make the sound. It only comes with the clutch depressed and if I gas it at idle, let off gas and it makes the terribly loud noise. What causes this and how do I fix it?
-
NISMOdrift240
- Posts: 187
- Joined: Mon Jan 27, 2003 9:53 am
- Car: 1995 240SX AT 4-lug
- Contact:
Yea, someone post a answer to this, please! I have the same issue. Not as bad tho. Its mostly when its cold. I know what mine sounds like, and to read what Drift's sounds like, i know where mine is headed. Hopefully someone has some insight.
Also: moses- what does removing the heat shields from the exhaust do? reduce rattles? and are you only talking about the shroud on the drivers side of the motor?
Also: moses- what does removing the heat shields from the exhaust do? reduce rattles? and are you only talking about the shroud on the drivers side of the motor?
The heat sheilds are notorious for rattling at various rpm's. Your problem sounds different though. But it wouldn't hurt to remove the heat shields anyway, to at least eliminate that as a possible problem. Remove all the ones you can get to, from the one on the header to the one on the cat. Most of the bolts will probly just break off anyway from rust, so its pretty easy to do.
-
bruinbear714
- Posts: 1159
- Joined: Thu Sep 05, 2002 9:58 pm
- Contact:
I'm still having the problem. Im not sure what the throw out bearing is ... is my car's symptoms relative to that problem? If so, what troubleshooting steps can I take to pinpoint if it is the throwout bearing? You say clogged cat -- but it doesn't seem that the way I can create the problem has anything to do w/ the cat -- if I'm wrong, please feel free to correct me and point me in the right direction.
throwout bearing is part of the clutch disc system and it something you replace when you replcace the clutch. The throwout bearing will also make a pulsing, chattering, or vibrating noise when you are accelerating, the worse it is the more often it will make the noise under various loads.
here are some pix:http://images.google.com/im.....UTF-8&hl=en
edit: pretty sure its only a "clutch engaged" type of problem
here are some pix:http://images.google.com/im.....UTF-8&hl=en
edit: pretty sure its only a "clutch engaged" type of problem
-
MadSideways
- Posts: 160
- Joined: Wed Dec 04, 2002 6:45 am
- Car: Cars, women, drifting...the usual...heh
-
MikeMurphy
- Posts: 824
- Joined: Sun Feb 23, 2003 12:20 pm
- Car: Guess
- Contact:
time for a new clutch!!!
throwout bearing and something else (cant remember the name) is VERY likely the culprit. Unless your doing the work yourself, i would suggest getting the clutch replaced too. The throwout bearing is costs about $25 and should have been replaced with your clutch. If it wasnt, then you should seriously ***** out who did your clutch last. It wears out over time, but if you ride the clutch or if you leave the clutch in when your stopped then it will wear out quicker.
part - $25approx time to replace - 4.5 hours @ whatever shop rate = screwed
might as well replace the clutch too if it needs to be done. heh, http://www.pdm-racing.com sells the centerforce dual friction clutch for a helluva deal.
throwout bearing and something else (cant remember the name) is VERY likely the culprit. Unless your doing the work yourself, i would suggest getting the clutch replaced too. The throwout bearing is costs about $25 and should have been replaced with your clutch. If it wasnt, then you should seriously ***** out who did your clutch last. It wears out over time, but if you ride the clutch or if you leave the clutch in when your stopped then it will wear out quicker.
part - $25approx time to replace - 4.5 hours @ whatever shop rate = screwed
might as well replace the clutch too if it needs to be done. heh, http://www.pdm-racing.com sells the centerforce dual friction clutch for a helluva deal.
ive also been having the same problem, each time i accelerate, this grinding sound increases when i go faster, its loud in 1st n 2nd gear n gets lower w/ 3, 4, and 5. i just dropped the car off today for them to figure out the problem, a friend had told me that the throwout bearing wasn't catching the pressure plate or something like that, we'll im expecting my call soon, when i hear wuts wrong w/ the car, ill make sure i post what they say!
transmission problem..i was told i need to replace the transmission, im gonna bring it some more places n see wut there prices are. they offered me $900 for labor n everything, but i gotta shop around..this sux, i just put the car back on the road..and bamm..this *****in s*it..i cant believe it..o well, anyone kno any good places that does trannys on long island that does good work? thnks
-
Scott McLellan
- Posts: 299
- Joined: Sat Nov 23, 2002 7:53 am
I wouldn't remove the exhaust heat shields unless you want your carpet melted to the floor... They put them there for a reason.
I having a little trouble figuring out why you guys think it is the throwout bearing. I have replaced my clutch and put a new throwout bearing on, too, after 130,000 miles. My clutch disc was all the way to the metal. (I bought the car with 130,000 miles) If the throwout bearing doesn't make noise after 130 K miles, cause mine didn't then I don't know. The throughout bearing wears into the pressure plate's (the thing that pushes the clutch disc against the flywheel) clutch-release arms. On mine it had wore a grove the shape of the contact surface of the throughout bearing into these release arm things. I could be wrong here so don't throw out the idea. But just adding my 2 cents. Could it be that the clutch disc itself isn't sliding freely on the transmission input shaft causing it to chatter between the flywheel and pressure plate? Just an idea. I very highly doubt Nismo31, that it is the complete transmission. Anyone else?
I having a little trouble figuring out why you guys think it is the throwout bearing. I have replaced my clutch and put a new throwout bearing on, too, after 130,000 miles. My clutch disc was all the way to the metal. (I bought the car with 130,000 miles) If the throwout bearing doesn't make noise after 130 K miles, cause mine didn't then I don't know. The throughout bearing wears into the pressure plate's (the thing that pushes the clutch disc against the flywheel) clutch-release arms. On mine it had wore a grove the shape of the contact surface of the throughout bearing into these release arm things. I could be wrong here so don't throw out the idea. But just adding my 2 cents. Could it be that the clutch disc itself isn't sliding freely on the transmission input shaft causing it to chatter between the flywheel and pressure plate? Just an idea. I very highly doubt Nismo31, that it is the complete transmission. Anyone else?
yea, im takin my car to some more places tommorow, idk how it the whole problem could be the transmission, im sure the clutch must play some major role in this annoyance. it's also the original clutch, the car has 142k miles n ran strong up until now. well, ill keep u guys infrormed as i continue to determine wuts wrong w/ my car..also..anyone kno wheres the best place to buy an SR20DET engine n transmission? thnks!
nismo31 i would bet your car doesnt really make noise in 4th gear but does in all the rest as you described. what it is is your bearings inside the trans have gone bad. it is usually cheaper to replace the trans then rebuild it due to labor rates today.
mad sideways it does infact sound like your T/O has gone dry inside causeing the noise you hear. but if your only hearing it at idle and not between shifts its not quite as bad as it could be. it will get worse. when it gets to the point your hear it "spin up" between shifts it is at the point that it needs to be done imediatly so the 2 peices dont seperate and scatter in your bellhousing. start thinking about a clutch kit (pressure plate,clutch disc, T/O bearing and pilot bushing) reasonbly priced kits are available at the dealers. you can probably even get it from the nissan wholesale site advertising here pretty resonably priced.
mad sideways it does infact sound like your T/O has gone dry inside causeing the noise you hear. but if your only hearing it at idle and not between shifts its not quite as bad as it could be. it will get worse. when it gets to the point your hear it "spin up" between shifts it is at the point that it needs to be done imediatly so the 2 peices dont seperate and scatter in your bellhousing. start thinking about a clutch kit (pressure plate,clutch disc, T/O bearing and pilot bushing) reasonbly priced kits are available at the dealers. you can probably even get it from the nissan wholesale site advertising here pretty resonably priced.