weird..high pitched noise - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

XxHybridx · 11-28-2010, 04:06 AM

alright, so a 2 days ago my car started making this high pitched noise.
almost sounds like a semi truck.
so i figured the alternator was going bad. my lights would go bright whenever i revved my car etc..
at first it wasn't to bad, it would only get really loud when i got to the higher rpms.
then it started doing it right when i would turn on the car. would do it for a few seconds then just go down, but continue to do it at high speeds.

so i went and switched out the alternator(the pulley on the old one seemed to be super loose)

started up fine and everything..but when i drove away the noise comes back at around 2500, the same semi truck sound noise i was mention, then at about 3500, it gets really high pitched. i dunno wtf it is..thought it was the alternator for sure. its quite aggravating.

could it be one of the pulleys or anything?
thanks in advanced

XxHybridx · 11-30-2010, 12:21 AM

someone said the timing belt might be screwed up.

Schassis707 · 11-30-2010, 01:15 AM

HMMM What is this timing belt you speak of??

Sileighty_85 · 11-30-2010, 06:54 AM

Quote:

Originally Posted by XxHybridx

someone said the timing belt might be screwed up.

dont listen to that retard

Post Video

***CrimsonRockett*** · 11-30-2010, 07:48 AM

Have you inspected your belts?

My dad's old Nissan Pickup used to do this. It was caused by old/worn belts.

Swap them out. They're cheap and easy to replace. That should fix your problem.

XxHybridx · 11-30-2010, 03:31 PM

ill try to get a video of the sound. hopefully u guys can make the sound out, cause it gets really at 3500 rpms, so hopefully the high pitched sound doesnt get too drowned out.

i actually only inspected the alternator belt, and it looked in pretty good condition still. didnt inspect the other belts tho. i figured the alternator belt was the one being lame, since changing the alternator somewhat helped out with the problem.
ill check em tho.

XxHybridx · 01-17-2011, 05:34 PM

alright. super late, i know. but i finally changed the belts. the noise would end up going away sometimes and then it would come back -.-;
so now, the car sounds a lot better.
i had gotten to a point where the car would make the high pitched noise when i would start the car on cold days. i would rev it a couple of times to make it go away.

so i changed all the belts, and the car stopped making the sound.
only prob is that it would make it when i would rev the car to 4500(was testing it)
so we tightened up the belts a little bit cus we left one a little loose, and now it makes the noise at 3000 rpms.
do i just gotta mess with the belts and find the right tension to tighten them at or what?

thanks in advanced

(oh yeah, when i removed the belts, one of em looked really worn down)

Mike666 · 01-18-2011, 01:53 PM

Look at this video, if this is the problem, replace clucth fan. and DONE!

YouTube - KA screach noise

XxHybridx · 01-18-2011, 10:42 PM

holy hell dude. thanks lol.
my car sounds JUST like that. like, identical lol. ill replace the fan asap.

Mike666 · 01-19-2011, 01:04 AM

Sure bro, just make sure to change the clutch inside the fan. let me know if it did it for you.

essthirteeeen42 · 04-17-2012, 12:47 PM

My car makes that noise when I start it up in the morning, but it goes away as soon as I have turned it on, and the thing is I have dual electric fans?

RyanS13 · 04-19-2012, 10:20 AM

Quote:

Originally Posted by essthirteeeen42

My car makes that noise when I start it up in the morning, but it goes away as soon as I have turned it on, and the thing is I have dual electric fans?

You bumped a thread that was a over a year ago to say that?

Here: Let me google that for you

How hard was that?

11-28-2010, 04:06 AM	#1
XxHybridx Zilvia Junkie Join Date: May 2010 Location: Inland Empire Posts: 301 Trader Rating: (17) Feedback Score: 17 reviews	weird..high pitched noise alright, so a 2 days ago my car started making this high pitched noise. almost sounds like a semi truck. so i figured the alternator was going bad. my lights would go bright whenever i revved my car etc.. at first it wasn't to bad, it would only get really loud when i got to the higher rpms. then it started doing it right when i would turn on the car. would do it for a few seconds then just go down, but continue to do it at high speeds. so i went and switched out the alternator(the pulley on the old one seemed to be super loose) started up fine and everything..but when i drove away the noise comes back at around 2500, the same semi truck sound noise i was mention, then at about 3500, it gets really high pitched. i dunno wtf it is..thought it was the alternator for sure. its quite aggravating. could it be one of the pulleys or anything? thanks in advanced

01-17-2011, 05:34 PM	#7
XxHybridx Zilvia Junkie Join Date: May 2010 Location: Inland Empire Posts: 301 Trader Rating: (17) Feedback Score: 17 reviews	alright. super late, i know. but i finally changed the belts. the noise would end up going away sometimes and then it would come back -.-; so now, the car sounds a lot better. i had gotten to a point where the car would make the high pitched noise when i would start the car on cold days. i would rev it a couple of times to make it go away. so i changed all the belts, and the car stopped making the sound. only prob is that it would make it when i would rev the car to 4500(was testing it) so we tightened up the belts a little bit cus we left one a little loose, and now it makes the noise at 3000 rpms. do i just gotta mess with the belts and find the right tension to tighten them at or what? thanks in advanced (oh yeah, when i removed the belts, one of em looked really worn down) Last edited by XxHybridx; 01-17-2011 at 05:36 PM.. Reason: .

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11-30-2010, 12:21 AM	#2
XxHybridx Zilvia Junkie Join Date: May 2010 Location: Inland Empire Posts: 301 Trader Rating: (17) Feedback Score: 17 reviews	someone said the timing belt might be screwed up.

11-30-2010, 03:31 PM	#6
XxHybridx Zilvia Junkie Join Date: May 2010 Location: Inland Empire Posts: 301 Trader Rating: (17) Feedback Score: 17 reviews	ill try to get a video of the sound. hopefully u guys can make the sound out, cause it gets really at 3500 rpms, so hopefully the high pitched sound doesnt get too drowned out. i actually only inspected the alternator belt, and it looked in pretty good condition still. didnt inspect the other belts tho. i figured the alternator belt was the one being lame, since changing the alternator somewhat helped out with the problem. ill check em tho.

01-18-2011, 01:53 PM	#8
Mike666 Leaky Injector Join Date: Sep 2010 Location: Miami Age: 33 Posts: 52 Trader Rating: (0) Feedback Score: 0 reviews	Look at this video, if this is the problem, replace clucth fan. and DONE! YouTube - KA screach noise

01-18-2011, 10:42 PM	#9
XxHybridx Zilvia Junkie Join Date: May 2010 Location: Inland Empire Posts: 301 Trader Rating: (17) Feedback Score: 17 reviews	holy hell dude. thanks lol. my car sounds JUST like that. like, identical lol. ill replace the fan asap.

01-19-2011, 01:04 AM	#10
Mike666 Leaky Injector Join Date: Sep 2010 Location: Miami Age: 33 Posts: 52 Trader Rating: (0) Feedback Score: 0 reviews	Sure bro, just make sure to change the clutch inside the fan. let me know if it did it for you.

04-17-2012, 12:47 PM	#11
essthirteeeen42 Leaky Injector Join Date: Oct 2011 Location: Downey, CA Posts: 108 Trader Rating: (0) Feedback Score: 0 reviews	My car makes that noise when I start it up in the morning, but it goes away as soon as I have turned it on, and the thing is I have dual electric fans?