Acceleration high pitch noise from motor - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

s14kings · 01-10-2009, 08:58 PM

So I have this noise coming from my motor (i think since its from the engine bay) and I have no idea what it is. It occurs when I accelerate between about 2k - 3k rpm. It's a high pitched noise when I throttle but doesn't occur when it's in neutral. Noise occurs throughout all gears, but not as much when in first. I thought at first it was pinging from low octane but I've been pumping 91 for a while and no change. It's also not a vacuum leak. Any help? Thanks.

*edit* I have a ka24de

scuba_steve91 · 01-10-2009, 11:56 PM

My ka24e does the same, kind of. When I drive from 2k-3k rpm, the engine starts getting unusually loud as it approachs 3k. Similiar to your problem, it occurs in all gears. Maybe it has something to do with our compression.

s14kings · 01-20-2009, 10:57 PM

Could anyone help us out? I'm stumped on this one...

artdrifter · 01-20-2009, 11:13 PM

wish i could help but i have the same problem with my SR. i'm about to take it to Amerikajin to get it fixed

s14kings · 01-25-2009, 04:00 PM

Help? Friends and a mechanic couldn't tell me what it was either.

alzahakar · 01-26-2009, 12:20 AM

A slipping belt perhaps? 2500-3000ish is when the belt will start slipping on the water pump pulley when you have a bad fan clutch.

98s14inaz · 01-26-2009, 07:46 AM

PS pump makes a whine when it is going out. Also make sure you have atf in the ps pump. Other than that I got nothing,

Erjay1 · 01-26-2009, 07:55 AM

Maybe someone installed a supercharger while you slept one night

I'd check the fluid level of you PS pump.

aziankingz · 01-26-2009, 08:41 AM

i have the same thing and i also have a ps problem.. could it be the powersteering belt/pump going? mine is a kind of whining plus ticking noise at about 2500-3k rpms.. do you guys have ticking as well?

supreme_1 · 01-26-2009, 03:19 PM

i have the exact same problem with my m30. vg30e.

i changed the power steering setup so it isnt that.

if worse comes to worse. take a belt off one at a time on your motor, if you dont hear the noise after you take certain belts off you then found your problem.

*slider2828* · 01-26-2009, 03:34 PM

Look at adjustments of the belts. Check for slack also look at wear of the belts as well. Maybe also clean your pulley a little as well.

Check oil levels of tranny and engine, hopefully those are all ok...

aziankingz · 01-26-2009, 04:05 PM

could it be transmission related?

01-10-2009, 08:58 PM	#1
s14kings Leaky Injector Join Date: Dec 2008 Location: socal Posts: 101 Trader Rating: (1) Feedback Score: 1 reviews	Acceleration high pitch noise from motor So I have this noise coming from my motor (i think since its from the engine bay) and I have no idea what it is. It occurs when I accelerate between about 2k - 3k rpm. It's a high pitched noise when I throttle but doesn't occur when it's in neutral. Noise occurs throughout all gears, but not as much when in first. I thought at first it was pinging from low octane but I've been pumping 91 for a while and no change. It's also not a vacuum leak. Any help? Thanks. edit I have a ka24de

01-26-2009, 07:46 AM	#7
98s14inaz Zilvia FREAK! Join Date: Feb 2003 Location: Nonya Posts: 1,367 Trader Rating: (1) Feedback Score: 1 reviews	PS pump makes a whine when it is going out. Also make sure you have atf in the ps pump. Other than that I got nothing, __________________ -Retired

01-26-2009, 03:34 PM	#11
slider2828 Premium Member Join Date: Oct 2004 Location: San Francisco, CA Posts: 5,824 Trader Rating: (13) Feedback Score: 13 reviews	Look at adjustments of the belts. Check for slack also look at wear of the belts as well. Maybe also clean your pulley a little as well. Check oil levels of tranny and engine, hopefully those are all ok... __________________ Turn and Burn!

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01-10-2009, 11:56 PM	#2
scuba_steve91 Zilvia Member Join Date: Dec 2007 Location: over there Posts: 223 Trader Rating: (2) Feedback Score: 2 reviews	My ka24e does the same, kind of. When I drive from 2k-3k rpm, the engine starts getting unusually loud as it approachs 3k. Similiar to your problem, it occurs in all gears. Maybe it has something to do with our compression.

01-20-2009, 10:57 PM	#3
s14kings Leaky Injector Join Date: Dec 2008 Location: socal Posts: 101 Trader Rating: (1) Feedback Score: 1 reviews	Could anyone help us out? I'm stumped on this one...

01-20-2009, 11:13 PM	#4
artdrifter Zilvia Member Join Date: Aug 2008 Location: San Bernardino Age: 32 Posts: 253 Trader Rating: (2) Feedback Score: 2 reviews	wish i could help but i have the same problem with my SR. i'm about to take it to Amerikajin to get it fixed

01-25-2009, 04:00 PM	#5
s14kings Leaky Injector Join Date: Dec 2008 Location: socal Posts: 101 Trader Rating: (1) Feedback Score: 1 reviews	Help? Friends and a mechanic couldn't tell me what it was either.

01-26-2009, 12:20 AM	#6
alzahakar Zilvia Member Join Date: Aug 2008 Location: San Antonio, TX Age: 39 Posts: 196 Trader Rating: (4) Feedback Score: 4 reviews	A slipping belt perhaps? 2500-3000ish is when the belt will start slipping on the water pump pulley when you have a bad fan clutch.

01-26-2009, 07:55 AM	#8
Erjay1 Zilvia Junkie Join Date: Apr 2008 Location: Los Angeles Age: 35 Posts: 479 Trader Rating: (2) Feedback Score: 2 reviews	Maybe someone installed a supercharger while you slept one night I'd check the fluid level of you PS pump.

01-26-2009, 08:41 AM	#9
aziankingz Nissanaholic! Join Date: Oct 2007 Location: NYC Age: 37 Posts: 1,735 Trader Rating: (28) Feedback Score: 28 reviews	i have the same thing and i also have a ps problem.. could it be the powersteering belt/pump going? mine is a kind of whining plus ticking noise at about 2500-3k rpms.. do you guys have ticking as well?

01-26-2009, 03:19 PM	#10
supreme_1 Zilvia Addict Join Date: Sep 2007 Location: hawaii Posts: 612 Trader Rating: (12) Feedback Score: 12 reviews	i have the exact same problem with my m30. vg30e. i changed the power steering setup so it isnt that. if worse comes to worse. take a belt off one at a time on your motor, if you dont hear the noise after you take certain belts off you then found your problem.

01-26-2009, 04:05 PM	#12
aziankingz Nissanaholic! Join Date: Oct 2007 Location: NYC Age: 37 Posts: 1,735 Trader Rating: (28) Feedback Score: 28 reviews	could it be transmission related?