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Has anyone on this board experienced a high pitch whining noise when they start their car? Mine now makes a whining noise when I start the car and let it idle. It seems to go away (or at least get a LOT quieter) after I drive around and the the car warms up.
I'm not sure if this is related at all, but I just installed a stepped alternator pulley for 9psi.
Thanks.
Souns like it could be an upgraded fuel pump. Mine makes a similar noise sometimes.
Possibly a bad bearing in the new pulley?
The stepper pulley has NO bearings, so this cannot be the problem. However, you may want to check your belt tension on both the alternator and the blower. Being too loose or too tight may make some strange noises.
It's not the fuel pump because it's coming from the front of the car.
I'll try playing with the belt tensions.
Anybody know how much play my power steering and air conditioning belts are supposed to have?
Thanks.
Take the Alternator to SC belt off and see if the idler pulley wobbles; if it does, it's bad and needs to be replaced... this has been the strange whining noise solution for at least 5 of us here. [img]smile.gif[/img] I thought it was my blower rubbing something inside at first but somebody turned me on to the bad idler idea... sounds like a high pich wining... gets better when car is warm.
Chuck
<font color="#a62a2a" size="1">[ March 09, 2002 04:10 PM: Message edited by: 96IntegraRS ]</font>
Also... it's actually more of a whirring than a whining. That ring any bells with anyone? Would the belt stop making noise at different rpms and when they warmed up? Could it be the funny looking "gatorback" belt I got to replace my AC belt?
Somebody on honda-tech.com mentioned something about a PCV valve.
Thanks for the suggestion Chuck. I'll check that out... but I just replaced that pulley on Monday! =)
I'll check that and my belt tensions out though. Thanks.
Belt tensions can be adjusted either by feel or with a tension gauge.
I go by feel. I look at the length of belt between two points and go from there. The longer the free belt length is, the more flex there should be.
So... for the PS belt, which has a 8-12" free span, I go for about an inch of flex at the midpoint. For smaller spans like the alternator belt, I go for a smaller flex, like 1/2".
Basically, the loosest it can be without slipping is the best setting. This puts the least load on the bearings.
I have a similar whining that I thought was maybe electrical interference. It starts to fluctuate when I hit my blinkers...from a steady "whiirrrrrr" to "whirrr.err.whirr.err.whirr.err" with every blink.
Gotta love the onomatopeia [img]wink.gif[/img]
Just FYI, I recently swapped idler pulleys, and the noise still persists.
I hear the blinker thing too... it's your alternator loading down. Alot of Honda cars do that. The "whining" that you cannot miss is the loud obnoxious whine, sounds like you blew the blower bearings, is what I'm assuming that CKim is talkiing about
Actually.. it's not that loud nor obnoxious.
Blower bearings? That scares me. Can someone confirm that blown blower bearings sound like a whirring that disappears when the car is warm and there's load on the motor?
I kind of suspect that it has something to do with the bypass valve? Actually... I don't have the slightest idea.
<BLOCKQUOTE><font size=2 face="Verdana, Helvetica, sans-serif">quote:</font><table border="0" width="90%" bgcolor="#333333" cellspacing="1" cellpadding="0"><tr><td width="100%"><table border="0" width="100%" cellspacing="0" cellpadding="2" bgcolor="#FF9900"><tr><td width="100%" bgcolor="#DDDDDD"><font size=2 face="Verdana, Helvetica, sans-serif">Originally posted by newgsrdriver:
onomatopeia [img]wink.gif[/img] </font></td></tr></table></td></tr></table></BLOCKQUOTE>
I've won free beer betting people that that is a real word! Great word!
My bypass valve must have a pinhole in it because it whistles at idle. Don't know if this is the sound you're talking about but to check, pull off the vacuum line from the bypass valve. If the sound goes away, that's it.
<BLOCKQUOTE><font size=2 face="Verdana, Helvetica, sans-serif">quote:</font><table border="0" width="90%" bgcolor="#333333" cellspacing="1" cellpadding="0"><tr><td width="100%"><table border="0" width="100%" cellspacing="0" cellpadding="2" bgcolor="#FF9900"><tr><td width="100%" bgcolor="#DDDDDD"><font size=2 face="Verdana, Helvetica, sans-serif">Originally posted by Holden:
I've won free beer betting people that that is a real word! Great word!</font></td></tr></table></td></tr></table></BLOCKQUOTE>
Excellent, glad I could help! Drink up Greg [img]graemlins/coffee.gif[/img] (thats about as close as I can get with these new smilies. Maybe warm beer, in a cup?)
<BLOCKQUOTE><font size=2 face="Verdana, Helvetica, sans-serif">quote:</font><table border="0" width="90%" bgcolor="#333333" cellspacing="1" cellpadding="0"><tr><td width="100%"><table border="0" width="100%" cellspacing="0" cellpadding="2" bgcolor="#FF9900"><tr><td width="100%" bgcolor="#DDDDDD"><font size=2 face="Verdana, Helvetica, sans-serif">Originally posted by CKim:
Has anyone on this board experienced a high pitch whining noise when they start their car? </font></td></tr></table></td></tr></table></BLOCKQUOTE>
Are you married? I notice that sound a lot whenever I start working on my car. It goes away after I get the car running and get about a block away from home.
Not married no. Hahahaha. Lucky for me my girlfriend doesn't mind that I spend so much time working on my car TOO much.
That sounds pretty normal. The only additional info. I can offer is that my Cartech FMU has a pressure equalization hole that has whistled before (sounded like a squeeze toy). I would agree the the whirring is related to the whole system, which is pretty noisy in my opinion.
Yeah. It kind of sounds to me like it's just making more noise at idle because the SC is spinning faster than before.
I just wanted to be sure. =b
<BLOCKQUOTE><font size=2 face="Verdana, Helvetica, sans-serif">quote:</font><table border="0" width="90%" bgcolor="#333333" cellspacing="1" cellpadding="0"><tr><td width="100%"><table border="0" width="100%" cellspacing="0" cellpadding="2" bgcolor="#FF9900"><tr><td width="100%" bgcolor="#DDDDDD"><font size=2 face="Verdana, Helvetica, sans-serif">Originally posted by BadAss:
my Cartech FMU has a pressure equalization hole that has whistled before</font></td></tr></table></td></tr></table></BLOCKQUOTE>
Any air coming in or out of that hole would indicate a leak. I've had gas come out of that hole before when gas was making it's way around the shim stock.
Here you go newgsrdriver [img]graemlins/beer.gif[/img]
:beer*: (* inserted to fool the board)
<font color="#a62a2a" size="1">[ March 12, 2002 12:11 AM: Message edited by: 96IntegraRS ]</font>
One more thing. This is probably unrelated... but when I boost approx. 6psi, my A/F reads full rich, but when I floor it and it goes to 9psi, my A/F reads stoich. This is even though it looks like my fuel pressures are going up to ~100psi.
Here's some new info on that sound.
It sounds like it's coming from right around my fuel rail or maybe underneath it.
Anyone have any experience with AEM FPRs making strange noises? Or possibly injectors even?
Also, my idle is a little funny. Even after my car is warmed up, when I rev it, the RPMs stick at ~1k or higher, and take a while to drop back down to 750.
If I let the car just sit there and idle, the sound is intermittent. It will disappear for a few minutes and then reappear, and then disappear again.
Also, this might be related to the high idle, but even when I'm stopped at a light, sometimes I can hear my purge cut solenoid ticking... when before I could only hear it at certain throttle positions.
Anyone ever hear a squealing noise right when they shut off their car? Sounds like pressure is being released somewhere. The squealing sounds kind of like that.
Does anyone have any ideas? Any help would be MUCH appreciated.
THANKS.
<font color="#a62a2a" size="1">[ March 13, 2002 12:09 AM: Message edited by: CKim ]</font>
Anyone have any ideas? Please? Pretty please?
How about a crack in the manifold or some sort of manifold leak. This would explain the noise and the lean mixture at WOT. maybe you should check the allen key bolts that hold the charger to the manifold. Maybe their loose.
Thanks. I'll check for that too.
I'm searching for any/all ideas that I can check.
One thing about the manifold leak... if it was in fact leaking, wouldn't my boost readings drop off at high rpms? They stay at a pretty rock steady 11-12psi on my autometer.
Would a vacuum leak explain my strange idle? It does in fact drop down to a normal 750, but it takes a while for it to do that. Every time I drive around... when I stop it's at a cold-idle. And then takes a while to drop back down.
i have the same sound just like CKIM, but mine whines when i start the car and sometimes when i'm driving around as well. I hear this sound coming from around the manifold or where the belts are, as with CKIM i have know clue what that sound is. I was thinking that it might be from the cold weather cause i live in Toronto, Canada, that could be the problem?!
Does anyone else have that prob. where it starts whinning even when you drive?
Hopefully it's not a major prob., knock on wood!!
IF ANYONE HAS INFORMATION ON THIS, IT WOULD HELP CKIM AND I GREATLY!!!!
Defconsc
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Did you try disconnecting the bypass like I suggested?
Also you need to do something about the stoich at 9 PSI. What do you mean "It looks like the fuel pressure is ~100 PSI."? Do you have an electronic FP gauge?
Yeah. I'll try disconnecting the bypass valve (vacuum line going to it). If the sounds goes away... would this mean that everything's normal?
Yup... I definitely have to do something about running stoich (well.. not stoich, but the A/F voltage is dropping below ~.8). I might try raising my static fuel pressure and lowering my IAT and MAP mod voltages. I thought that running stoich MIGHT possibly be related to that noise.
Oh yeah. and I have an electronic autometer fuel pressure gauge... but it's the short sweep one. It's pretty hard to tell what it's actually reading sometimes.
<font color="#a62a2a" size="1">[ March 13, 2002 06:40 PM: Message edited by: CKim ]</font>
<BLOCKQUOTE><font size=2 face="Verdana, Helvetica, sans-serif">quote:</font><table border="0" width="90%" bgcolor="#333333" cellspacing="1" cellpadding="0"><tr><td width="100%"><table border="0" width="100%" cellspacing="0" cellpadding="2" bgcolor="#FF9900"><tr><td width="100%" bgcolor="#DDDDDD"><font size=2 face="Verdana, Helvetica, sans-serif">Originally posted by CKim:
Yeah. I'll try disconnecting the bypass valve (vacuum line going to it). If the sounds goes away... would this mean that everything's normal?<font color="#a62a2a" size="1">[ March 13, 2002 06:40 PM: Message edited by: CKim ]</font></font></td></tr></table></td></tr></table></BLOCKQUOTE>
I believe so. I think the whistling sound is from a pinhole in the bypass valve diaphram. As long as the hole is small enough to keep the bypass butterfly open at idle we're OK.
Dammit... everytime I pull into my garage to try to pinpoint that sound... the sound DISAPPEARS!
So basically... I can't try to get rid of the sound.. since it goes away when I sit in my garage with my car idling. Hahaha... I'll keep trying to pinpoint it though.
Well... pulling off the vacuum line to the bypass valve did nothing. I also tried swapping my AEM FPR for the stock one. That did nothing.
It doesn't feel like there are any leaks between the manifold and the blower. I've checked all vacuum hoses, well... all the ones coming out of the intake manifold... are there more?
Putting the end of an extension on the SC idler pulley bracket and sticking my ear on the other end revealed nothing. Actually... moving all around the engine bay looking for where the sound was coming from revealed nothing.
Man.. this is getting frustrating.