Intermittent moaning/ howling noises coming from car - LotusTalk

Stale_Hotdog · 01-09-2013, 03:10 PM

I'm getting these intermittent moaning/ howling noises from my exige s240. It can get so loud that it drowns out the radio but then suddenly goes away. Earlier on I thought it was coming from the front of the car now it's coming from behind in the engine bay?

It has happened while idling, coasting, braking, and accelerating. (Not too sure on the last one since the exhaust is so loud.) I think the only consistent thing is that the car is warmed up when it happens. I'd describe the noise as the noise plumbing makes when there is air inside. Anyone else ever have this issue?

Elige · 01-09-2013, 03:44 PM

Check your boot for an animal.

Stale_Hotdog · 01-09-2013, 08:59 PM

hahah I kind of wish it was... would be a lot easier to diagnose

glb · 01-10-2013, 09:19 AM

Quote:

Originally Posted by Stale_Hotdog

I'm getting these intermittent moaning/ howling noises from my exige s240. It can get so loud that it drowns out the radio but then suddenly goes away. Earlier on I thought it was coming from the front of the car now it's coming from behind in the engine bay?

It has happened while idling, coasting, braking, and accelerating. (Not too sure on the last one since the exhaust is so loud.) I think the only consistent thing is that the car is warmed up when it happens. I'd describe the noise as the noise plumbing makes when there is air inside. Anyone else ever have this issue?

1. Your car may need an exorcism.

2. Does the noise change with engine or road speed?

3. Have you opened the hood and listened from where it might be?

4. Warm it up, look around, listen. How is the belt?

ewalberg · 01-10-2013, 09:20 AM

Grab the SC intake/thottle body while it's idling and push/pull on it. Does it cause the sound at least in some fashion? I've heard howling from a car that had SC mounting studs broken on it pushing/pulling on the throttle body would lift SC enough to cause the beginnings of the same resonance/howling that you'd get when on the throttle and it starts building some boost sufficient to lift it off.

Stale_Hotdog · 01-10-2013, 09:39 AM

The only problem is that by the time I pull over and get out of the car to look track down the sound it has already disappeared. I'll give the SC a look over but it doesn't make that noise on boost. And the belt slipping i'm not so sure about since the noise used to generate from the front of the car drivers side. Can a coolant leak or air in the cooling system cause this noise? I've noticed some coolant loss recently.

Harix · 01-10-2013, 09:51 AM

Quote:

Originally Posted by Stale_Hotdog

I think the only consistent thing is that the car is warmed up when it happens.

May be the fan? When are you going to stop by? I'll sit with you and check for the problem. 2 people always better than 1

GR82DRV · 01-10-2013, 11:41 AM

Got the same problem with my '99 Civic. Especially when the car is just starting to warm up well, it emanates a low-toned howling whistle from somewhere forward of the firewall that will come and go - no vibration, no grinding, not directly linked to RPM, gears, rolling speed, or throttle, although changes in throttle or gears can slowly make it come and go... Just weird.

Stale_Hotdog · 01-16-2013, 03:40 PM

New tidbit I can at times feel the vibrations of the noise through my steering wheel. Also one time I could modulate the noise on and off for a few seconds with the brakes at really low parking lot speeds pulling into a parking spot.

6i9 · 01-17-2013, 08:44 AM

What pads do you have? If you have aggressive aftermarket ones, could the pads be catching on the rotor at a certain speed/angle and causing "brake moan?"

Or it could be coming from the brake booster/master cylinder...did you recently do any brake bleeding on the car?

kestrel74 · 01-17-2013, 09:17 AM

It's the porn dvd you put in the CD player.........

Stale_Hotdog · 01-17-2013, 01:40 PM

Running the factory Pagid rs-14's stock bbk ap calipers. Good idea, im going to inspect them again. I've flushed and bled the brakes about 6 months ago. Fluid is still clear. I used to suspect it was the brake master cylinder since the noise was coming from the drivers side. But i've never heard a brake master cylinder make noise before.

Quote:

Originally Posted by 6i9

What pads do you have? If you have aggressive aftermarket ones, could the pads be catching on the rotor at a certain speed/angle and causing "brake moan?"

Or it could be coming from the brake booster/master cylinder...did you recently do any brake bleeding on the car?

sturgeongeneral · 01-17-2013, 05:35 PM

I had a similar noise coming from passenger rear. It turned out to be brake pad rattle. I put the orange stop squeal behind the pads and no more rattles, grinds, or squeals.

01-09-2013, 03:10 PM	#1 (permalink)
Stale_Hotdog DENNAB Join Date: Aug 2004 Posts: 811	Intermittent moaning/ howling noises coming from car I'm getting these intermittent moaning/ howling noises from my exige s240. It can get so loud that it drowns out the radio but then suddenly goes away. Earlier on I thought it was coming from the front of the car now it's coming from behind in the engine bay? It has happened while idling, coasting, braking, and accelerating. (Not too sure on the last one since the exhaust is so loud.) I think the only consistent thing is that the car is warmed up when it happens. I'd describe the noise as the noise plumbing makes when there is air inside. Anyone else ever have this issue?

01-09-2013, 03:44 PM	#2 (permalink)
Elige Addicted Join Date: Jul 2005 Location: El Ayy Posts: 1,483	Check your boot for an animal. __________________ 05 graphite grey elige with zero mods.

01-10-2013, 09:20 AM	#5 (permalink)
ewalberg Registered User Join Date: May 2006 Location: Redwood City, CA Posts: 1,306	Grab the SC intake/thottle body while it's idling and push/pull on it. Does it cause the sound at least in some fashion? I've heard howling from a car that had SC mounting studs broken on it pushing/pulling on the throttle body would lift SC enough to cause the beginnings of the same resonance/howling that you'd get when on the throttle and it starts building some boost sufficient to lift it off. __________________ 2006 Aspen White Elise. LSS, LSD, Traction control, LS Toe Link Brace, LS Ohlins DA, Rota 15/16's, BOE surge tanks and Sector 111 Gpan2, Red leather, JL speakers all around with Acapulco MP54, CF dash top, gas shock opening rear deck, multi-vex mirros and replaced rear-view mirror with kit off this forum.

01-17-2013, 08:44 AM	#10 (permalink)
6i9 Chris Join Date: Mar 2006 Location: Los Angeles Posts: 2,496 Images: 1	What pads do you have? If you have aggressive aftermarket ones, could the pads be catching on the rotor at a certain speed/angle and causing "brake moan?" Or it could be coming from the brake booster/master cylinder...did you recently do any brake bleeding on the car? __________________ 2005 Magnetic Blue Lotus Exige Drivetrain: Honda K20A Type R \| Innovative Mounts \| Arqray Ti \| Innovative Exhaust \| Custom Intake \| Hondata KPro \| proRAD \| Setrab Cooler \| Innovative Shifter \| KTuned \| V2 Fuel Tank \| Radium Coolant Tank \| Aero: Exige Clams \| Reverie \| TWRD \| Craftsquare \| Denag \| IMRP \| BSK Hatch Suspension: Nitron SA \| V2arms \| RTDbrace \| Volk CE28N \| Toyo R888 \| DBA4000 \| Pagid RS14 Interior: Recaro SPG \| Willans \| WorksBell \| Sparco Wheel \| aspec Ti knob

01-17-2013, 09:17 AM	#11 (permalink)
kestrel74 G-200 Driver Join Date: Jun 2004 Location: North of Detroit; Watkins Glen, NY Posts: 11,369	It's the porn dvd you put in the CD player......... __________________ Elise #2292 / CO / Starshield / Nitron Sport SA / RTDbrace / Uprights machined / Down Low rails / DBA 4000 Wiper Slot Rotors/ V1 / SS lines w/Pagid Black / G-Pan / Odyssey PC680 with RLS Bracket / Difflow 5 Element diffuser / Stebel Nautilus horn "My daily driver does .85 Mach" " I started flying when Sex was safe and Hang Gliding was dangerous "

01-09-2013, 08:59 PM	#3 (permalink)
Stale_Hotdog DENNAB Join Date: Aug 2004 Posts: 811	hahah I kind of wish it was... would be a lot easier to diagnose

01-10-2013, 09:39 AM	#6 (permalink)
Stale_Hotdog DENNAB Join Date: Aug 2004 Posts: 811	The only problem is that by the time I pull over and get out of the car to look track down the sound it has already disappeared. I'll give the SC a look over but it doesn't make that noise on boost. And the belt slipping i'm not so sure about since the noise used to generate from the front of the car drivers side. Can a coolant leak or air in the cooling system cause this noise? I've noticed some coolant loss recently.

01-16-2013, 03:40 PM	#9 (permalink)
Stale_Hotdog DENNAB Join Date: Aug 2004 Posts: 811	New tidbit I can at times feel the vibrations of the noise through my steering wheel. Also one time I could modulate the noise on and off for a few seconds with the brakes at really low parking lot speeds pulling into a parking spot.

01-17-2013, 05:35 PM	#13 (permalink)
sturgeongeneral Registered User Join Date: May 2011 Location: Sacramento, Ca. Posts: 1,834	I had a similar noise coming from passenger rear. It turned out to be brake pad rattle. I put the orange stop squeal behind the pads and no more rattles, grinds, or squeals. __________________ 05 Elise 56 VW Dune Buggy Lightweight fiberglass toys that simulate street legal rocket ships!

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