You guys might remember I posted last summer about a noise coming from my engine. Whenever I get on the gas, it sounds like a muffled horn blowing. I can only surmise its something to do with the air intake.

This morning (after 10 degree temps) I was leaving my house and I heard a siren. It wasnt a cop, it was me. Whenever I got on the gas, I can hear a siren (like the old 60's police cars). Whaaaaaaaaaahhhhhh!!! (thats the sound not me crying).

Once the engine got warmed up the sound went away, but Id like it to go away for good. Anyone else have weird noises coming from their airintake? The only mod Ive done there is a K&N filter (not the kit).

Thanks!

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The Truck: 1997 Black F-150 Flareside. Regular Cab ORP and Towing Package
The Mods: K&N Filter, Eurolid Hard Tonneau, Profile Windstream Side Deflectors and Ford Bug Deflector.
The Site:
Triton's 4.6 Liter Web Page
www.mindspring.com/~acbradley/index.html

 

I get this to it has been there sence i put my k&n air filter in and then woorse when I did the air box mod to it. I think that it is all of the cold air that is getting to the motor, and I don't think that it will hurt anything. I do notic more power when it makes the noise. Someone correct me if I am wrong. hope this helps Allan

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1999 F150 BRIGHT RED EXTENDED CAB 4x4 OFF ROAD, WITH GRAY INTERIOR, 5.4L, 3.73 GEARS, ADD ON'S BELOW
ACCESS TUNNEL COVER
STAINLESS STEEL NERF BARS
STAINLESS STEEL ROCKER PANNELS
FLOWMASTER EXHAUST
LUND BUG GUARD
GTS HEAD LIGHT COVERS
K&N AIR FILTER W/ AIR BOX MOD
PUTCO BED RAILS
RED STERING WHEEL COVER
PIONNEER CD DECK
WISH LIST: F1 RAM AIR HOOD, TINTED SIDE WINDOWS, BRUSHGUARD, WIPER CRAWL, VISOR, LIFT W/ 34" TIRES, ECT,ECT...

 

You sure someone didn't sneak into your garage late one night and install a PowerAid in your truck! LOL!

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Paul...
99 F-150 XLT SC Sport, 4.6L, Auto, Captain Chairs, Class III Towing Package, 3.55 LS, Sliding Rear Window, White, 4X2, CD, Soft Factory Tonneau Cover, K&N Filter, WMS Velocity Tube, Line-X Spray on Bed Liner, Gibson Side Swept Cat Back System, F150online Decal...
More to come!

ptarnuzzer@megsinet.net

 

I get a slight wistling noise in mine too, but only when it is cold.here in New England I don't think it will warm up soon, so I will just have to live with it until spring.

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1999 F150 4x4 4.6V8 regcab/shortbed
Oxford White with Wedgewood Blue two tone, with Blue Captains chairs
Bassani Cat Back, Superchip,Modified intake with modified K&N filter.

 

Paul,

Ill leave my hood open tonight and maybe someone will...

All,

OK, someone just nailed it in another post. Cant remember but its on Engines and they said that the sound is like someone blowing across the top of a coke bottle. Thats exactly what I get when its warm, but the noise this morning was a wailing noise.

Does anyone know anything about the 'silencer' thats attached to the airbox? I believe this is where my problem lies. Perhaps it needs tightening, loosening, etc?

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The Truck: 1997 Black F-150 Flareside. Regular Cab ORP and Towing Package
The Mods: K&N Filter, Eurolid Hard Tonneau, Profile Windstream Side Deflectors and Ford Bug Deflector.
The Site:
Triton's 4.6 Liter Web Page
www.mindspring.com/~acbradley/index.html

 

When I installed a K&N in my modified stock box, I didn't notice any change in sound. (Maybe a slight whistle sound at idle - the air getting sucked in.) It's been between 10 above and 0 degrees here for the past few days. Go figure......

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1997 F-150 RC Flareside, 4.6L Std, Black, ARE Wheels w/265-75-16s, Lund Visor, ******** Hard Lid, 2-Chamber Flowmaster, K&N (Stock Box Hack!), Rockford Audio (500 Watts of CLEAN sound!)

 

I just bought a 2000 f150 5.4 sc. On the way home I heard a funny noise. I don't know if it is normal or not. Non of the description above really match what I hear. It happens around 750-1500 rpm if you hit the throttle just right and sounds like rubber rubbing the tire but it comes from the dash. Does anyone have this problem?

Jearod

 

It was a little warmer here today, allmost 30 degrees. No noise today, seems to only make it below 15-20 degrees


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1999 F150 4x4 4.6V8 regcab/shortbed
Oxford White with Wedgewood Blue two tone, with Blue Captains chairs
Bassani Cat Back, Superchip,Modified intake with modified K&N filter.

 

I have had a like problem. I get a whine or whirr type sound upon starting the truck. The temp has been between -5 and 10 at night. I thought the sound was from the tranny because I got the same noise initially while driving. The service manager who has been personally overseeing the warranty repairs on my truck started it on one of these cold mornings. He heard the none driving whine and said it was from the pulleys (something about bad bushing on a batch of them) and he ordered me a new set to be replaced at the same time they replace my driverside door for a chronic crack. I'll let everyone know if this fixes my cold weather noises.

P.S. Today the temp was above 20 degrees all night and no noise this morning. I have had this truck for 2-1/2 yrs through colder weather than we have had recently so I don't know the reason for the new noises.

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'97 F-150 4x4 4.6L Auto Off Road Moonlight Blue
Tow package, Westin Chrome Nerf bars, Color matched bug shield
Linex bed liner, Wizard Ultra White Headlights

 

I think some of it has to do with age (parts expanding and contracting from heat). Mine is still running strong. Our weather hasnt dropped back down to 10 and I havent heard the 'siren' noise again. The 'beep' which sounds like someone blowing on a coke bottle has disappeared too, although that usually rears its head in warmer temps.

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The Truck: 1997 Black F-150 Flareside. Regular Cab ORP and Towing Package
The Mods: K&N Filter, Eurolid Hard Tonneau, Profile Windstream Side Deflectors and Ford Bug Deflector.
The Site:
Triton's 4.6 Liter Web Page
www.mindspring.com/~acbradley/index.html

 

About that air silencer, i know that most mustang guys remove theirs, they claim it makes more power and a more throaty noise under the hood. I would have to say that since all of the complaints are coming from folks with the filtercharger that may be the problem.
JB

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Built Ford Tough