Topic: Mystery Noise
in Forum: C3 Engines
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I haope in in the right spot.... I developed a noise when the car is up to temp for a while. Its a major whistling noise. It sounds almost vacuum related. Only work I've done this year was rebuild the carb (again). Any thoughts? It always happens in reverse, It occasionally happens in Drive. Not too much in park..
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Duncanville, TX - USA
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At idle, or anytime?
Could still be a carb leak somewhere, an exhaust leak, or a vacuum leak...so many possibilities...
Could still be a carb leak somewhere, an exhaust leak, or a vacuum leak...so many possibilities...
Joel Adams
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At idle or in motion. Its not an exhaust leak. I tried to track down the noise, I cant find it. Dumb question Joel - The trans cant be making the noise, could it?
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Oak Creek, WI - USA
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Vette(s): 1981 Great White Shark. Red Interior, 350/190 hp. PS, PB (SS), A/C CC, T-Tops. Served three years in Active Duty Army, then Retired Air Force after 34 years! Badger State Vettes Car Club. 175,000 Original miles!! Now own a 1998 C-5!
I have had the same problem. I think that I have located the sourse. It is the pipe that goes into the air cleaner from the A.I.R. Pump. You got one of those correct?? Thats where my noise is coming from. Not ALL the time either, thats what made it so hard to find.
Dan
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Duncanville, TX - USA
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Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/
Am-Fm/map light National/Regional/Chapter NCRS "Top Flight"
#2-1985 Bright Red/Carmine Cp.L-98/auto
Member: NCRS, NCRS Texas, Corvette Legends of Texas
Kev, I've never heard a trans make a "whistling" noise, but...this is your car we're talking about, so...
Dan might be onto something, too. I've have heard some smog stuff make weird noises that could be considered a whistle. The check valves(from the manifolds to the AIR pump) will do it for sure, if they are partially burnt out inside....
Have you tried changing the A/C-heat controls when the noise happens, to see if it changes?
Can you tell if the noise is inside the cabin, or outside under the hood?
Dan might be onto something, too. I've have heard some smog stuff make weird noises that could be considered a whistle. The check valves(from the manifolds to the AIR pump) will do it for sure, if they are partially burnt out inside....
Have you tried changing the A/C-heat controls when the noise happens, to see if it changes?
Can you tell if the noise is inside the cabin, or outside under the hood?
Joel Adams
C3VR Lifetime Member #56
My Link
(click for Texas-sized view!) NCRS
"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
Former Member
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Oak Creek, WI - USA
Joined: 5/21/2008
Posts: 1965
Vette(s): 1981 Great White Shark. Red Interior, 350/190 hp. PS, PB (SS), A/C CC, T-Tops. Served three years in Active Duty Army, then Retired Air Force after 34 years! Badger State Vettes Car Club. 175,000 Original miles!! Now own a 1998 C-5!
Joel? You agree with me!! Man, I gotta tell my wife that somebody is on my side!!! Tee-Hee. !!
Dan - You are a super hero! I could not find the darn noise but that was it!!!! Thanks! Kebo
Joel - I have a job for ya, I already made plans for Arlington in October. Can you track down a good cheap down home local jernt that accepts Yankees? Havent seen you folks in a while!
in Forum: C3 Engines
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