05-21-2015, 07:25 PM
#1
Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,899
Lets play a game: Mystery Noise
Its
not any of the following:
Belt, or pulley related
Suspension related
Driveline related
Engine valvetrain related
Now, with all that there, what would you guess the kind of noise was? I don't need specifics as to what on this car is making the noise, just toss some ideas out.
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Quote:
Originally Posted by
KirkEvil
repo bigals turd gen and part it out to a loving home
05-21-2015, 08:08 PM
#2
^^^Lover of bad cars^^^ Meet Coordinator
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im guessing the car isn't moving
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05-21-2015, 08:31 PM
#3
Stalker
Join Date: Aug 2004
Posts: 12,077
sounds like a dash rattle or something... maybe 2 pieces of plastic rubbing
Last edited by V; 05-21-2015 at 08:31 PM .
05-21-2015, 08:41 PM
#4
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Optispark
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1995 Firebird... Stock-ish.
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Originally Posted by
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Good. He microwaved my phone 6 years ago, i hope his intake erupts.
05-22-2015, 05:46 AM
#5
Mongo the Meet Coordinator
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Quote:
Originally Posted by
ThoR294
im guessing the car isn't moving
Incorrect, think it was a 65 to 75mph area
Quote:
Originally Posted by
V
sounds like a dash rattle or something... maybe 2 pieces of plastic rubbing
Interesting, that could def be it.
Quote:
Originally Posted by
Jersey Mike
Optispark
Perhaps.
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Quote:
Originally Posted by
KirkEvil
repo bigals turd gen and part it out to a loving home
05-22-2015, 07:52 AM
#6
Ayatollah of Rock N Rolla / Admin
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Does it do it sitting at idle, revving?
Are you sure it's an underhood noise vs. driveline?
Last edited by WildBillyT; 05-22-2015 at 07:53 AM .
05-22-2015, 07:58 AM
#7
Mongo the Meet Coordinator
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Not at idle, you need to blip the throttle to have it make noise in park.
Going up and down the lift seemed to narrow it down to driver side, near the firewall, and that was obviously in park, so I am crossing out driveline.
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Quote:
Originally Posted by
KirkEvil
repo bigals turd gen and part it out to a loving home
05-22-2015, 08:23 AM
#8
Ayatollah of Rock N Rolla / Admin
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What did you guys check when it was on the lift? Any chance it could be a tiny exhaust leak?
Last edited by WildBillyT; 05-22-2015 at 08:24 AM .
05-22-2015, 08:30 AM
#9
Admin.
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Loose nut behind the wheel?
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Vent Windows Forever!
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05-22-2015, 08:32 AM
#10
Mongo the Meet Coordinator
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Quote:
Originally Posted by
WildBillyT
What did you guys check when it was on the lift? Any chance it could be a tiny exhaust leak?
Just checked clearance between everything and then Adam/BLS listened with mechanic stethoscope while I blipped throttle.
It could be an exhaust leak for sure, just isn't a very obvious one. No soot build up or ticking at idle.
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Quote:
Originally Posted by
KirkEvil
repo bigals turd gen and part it out to a loving home
05-22-2015, 09:44 AM
#11
Ayatollah of Rock N Rolla / Admin
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Quote:
Originally Posted by
LTb1ow
Just checked clearance between everything and then Adam/BLS listened with mechanic stethoscope while I blipped throttle.
It could be an exhaust leak for sure, just isn't a very obvious one. No soot build up or ticking at idle.
Next question:
Any thermal part to it? In other words, if you let the thing run for an hour or so does the noise change? Just thinking pipe expansion.
05-22-2015, 09:57 AM
#12
Mongo the Meet Coordinator
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Negative, it will do it when cold or hot. No change in sound level IMO.
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Quote:
Originally Posted by
KirkEvil
repo bigals turd gen and part it out to a loving home
05-22-2015, 10:50 AM
#13
Ayatollah of Rock N Rolla / Admin
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Sorry for all the random thoughts. LOL.
Did you do a full HVAC delete? No blower motor?
Last edited by WildBillyT; 05-22-2015 at 10:50 AM .
05-22-2015, 10:52 AM
#14
Mongo the Meet Coordinator
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Thats what the thread is for, we are out of ideas so anything, off the wall is all good
And yes, all HVAC is gone.
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Quote:
Originally Posted by
KirkEvil
repo bigals turd gen and part it out to a loving home
05-22-2015, 11:03 AM
#15
Ayatollah of Rock N Rolla / Admin
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Is it in any way boost referenced? Like it shows up under boost but not vacuum? Or the opposite?
Last edited by WildBillyT; 05-22-2015 at 11:03 AM .
05-22-2015, 11:54 AM
#16
Mongo the Meet Coordinator
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Quote:
Originally Posted by
WildBillyT
Is it in any way boost referenced? Like it shows up under boost but not vacuum? Or the opposite?
It shows up regardless of engine vac/boost.
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Quote:
Originally Posted by
KirkEvil
repo bigals turd gen and part it out to a loving home
05-22-2015, 04:10 PM
#17
BadMod
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I know you clearances exhaust. But have you checked intercooler and cold side piping to bumper and bumper related parts?
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Quote:
Originally Posted by
79CamaroDiva
It started before I drove your car. I just have to look at it the wrong way and your car poops parts.
Mercerville MotorSports, LLC
05-22-2015, 04:13 PM
#18
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That says 'mechanical squeaking' to me. Something rubbing under the dash, maybe? You eliminated the ABS, right? Possibly the brake lines rubbing on something, or the proportioning valve?
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Originally Posted by
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I can appreciate a dream but this person needed some real friends.
05-22-2015, 05:46 PM
#19
Mongo the Meet Coordinator
Join Date: May 2008
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Quote:
Originally Posted by
Mike
I know you clearances exhaust. But have you checked intercooler and cold side piping to bumper and bumper related parts?
Yup, everything is free to move without getting close to anything.
Quote:
Originally Posted by
The_Bishop
That says 'mechanical squeaking' to me. Something rubbing under the dash, maybe? You eliminated the ABS, right? Possibly the brake lines rubbing on something, or the proportioning valve?
Yes, ABS is gone and prop valve is in the rear. I will start looking for loose things under the dash this weekend.
Keep the ideas coming guys, appreciate em
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Quote:
Originally Posted by
KirkEvil
repo bigals turd gen and part it out to a loving home
05-22-2015, 07:53 PM
#20
Join Date: Mar 2011
Location: Morris County
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Could it be a chipmunk and/or gerbil playing a mini snare drum in the hvac vents?
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05-22-2015, 10:04 PM
#21
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If you take the drive belt off does the noise happen? Just to 100% eliminate belt.... Cause it damn sounds like a belt lol
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1986 Honda VFR750 - 89.3HP to the wheel
2000 Trans Am M6 - Mods: Yes.
2018 Durango R/T - AFE Intake, JLT Catch Can, Stainless Works Catback, Vinyl Dodge Racing Stripes
2003 Toyota Matrix XRS M6 - Lol
05-22-2015, 10:57 PM
#22
Join Date: May 2015
Location: Bergen County, NJ
Posts: 11
Sounds like the vent blower motor or possible tire out of balance.
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05-23-2015, 06:05 AM
#23
BadMod
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Quote:
Originally Posted by
98RedRocket
Sounds like the vent blower motor or possible tire out of balance.
Doesn't have hvac any more and it makes the noise at idle
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So much stupid, so little time.
Quote:
Originally Posted by
79CamaroDiva
It started before I drove your car. I just have to look at it the wrong way and your car poops parts.
Mercerville MotorSports, LLC
05-23-2015, 06:13 AM
#24
Join Date: Sep 2008
Location: Hackettstown, NJ
Posts: 1,635
He already did the belt pull thing.
Water pump, electric or manual? Another wild idea.
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1998 Z-28 - SLP lid - Ported TB - LS6 Intake - Dynatech SS headers/Catted Y - Magnaflow Exh - 3.42 - Yank SS3600 - UMI weld-in subframe connectors, Adj LCA, Adj PHB, Q1A TA - Bolt-in Relocation Brackets - Strano springs - Koni shocks - 17" C6Z06 wheels - 326HP/335ft-lbs - 12.35 @ 110.41
Quote:
Originally Posted by
Blackbirdws6
I can appreciate a dream but this person needed some real friends.
05-23-2015, 11:06 AM
#25
Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,899
Quote:
Originally Posted by
grazi
Could it be a chipmunk and/or gerbil playing a mini snare drum in the hvac vents?
Would be cool, but I don't think they would survive in my death trap.
Quote:
Originally Posted by
ThoR294
If you take the drive belt off does the noise happen? Just to 100% eliminate belt.... Cause it damn sounds like a belt lol
Does it without belt on.
Quote:
Originally Posted by
98RedRocket
Sounds like the vent blower motor or possible tire out of balance.
No HVAC what so ever is in car. Tire out of balance is possible but does it in park.
Quote:
Originally Posted by
The_Bishop
He already did the belt pull thing.
Water pump, electric or manual? Another wild idea.
EWP, idler transmission removed from block.
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Quote:
Originally Posted by
KirkEvil
repo bigals turd gen and part it out to a loving home
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