1994 Camaro convertible loud high-pitched noise, sounds like air leaking out

Asked by beebols Aug 03, 2016 at 04:08 PM about the 1994 Chevrolet Camaro Convertible RWD

Question type: Maintenance & Repair

loud high pitched noise, everything under the hood is in great condition, car
starts easily, no belt problems, no alternator problems, noise seems to
come from the side or underneath the car.  Also when removing fuel cap
there is  a palpable amount of air that expels every time. Car is not driven a
lot. Could this be an air in the fuel line or buildup of air....color me
frustrated. Noise only occurs when car is fully warmed up

2 Answers
101,595

KenF answered 7 years ago

Maybe you have a problem with the EVAP recovery system - start with the gas cap, then the fuel tank vent valve (which has a pressure/vacuum relief valve), the EVAP emission control valve, and the EVAP emission canister. THe EVAP emission canister is connected to the crankcase ventilation valve by a purge solenoid valve. As you can imagine, pressure differentials are at play here, so if you have a leak or a blockage in one of these you might get a whistling noise, and the pressure is building, as you have noticed, in the gas tank. I'm not certain if there is a relay used in connection with the purge solenoid or not, check under the hood as that alone might be the problem.

1 people found this helpful.
Mark helpful

beebols answered 7 years ago

this sounds very logical, unlike yourself I am not talented when it comes to fixing these things, does anyone know of a good, but inexpensive mechanic in the Arlington/Alexandria Virginia area

Mark helpful

Your Answer:

Related Questions

  • 1994 Camaro convertible loud high-pitched noise, sounds like air leaking out 2 Answers

    loud high pitched noise, everything under the hood is in great condition, car starts easily, no belt problems, no alternator problems, noise seems to come from the side or underneath the car. Also ...

    1994 Chevrolet Camaro Convertible RWD

    -

    Maintenance & Repair

  • my camaro makes a high pitched noise sometimes from under the car 2 Answers

    My 1982 Camaro makes a high-pitched noise sometimes after I idle it or drive it. It kind of sounds like a horn and it comes from under the car near the muffler.

    1982 Chevrolet Camaro

    -

    Maintenance & Repair

  • My 1994 camaro z28 2 Answers

    I was on my way to work last night and my 94 camaro Z28 was running fine then all of a sudden it started making like a loud knocking noise and the whole car shaking and when I stepped on the gas i...

    1994 Chevrolet Camaro Z28 Coupe RWD

    -

    Maintenance & Repair

  • 1994 camaro 4 Answers

    Hi my 1994 Z28 Camaro LT1 won't start well here's the story I was driving down the highway in about 55 miles an hour and all of a sudden it backfired and started stuttering and sputtering and I pul...

    1994 Chevrolet Camaro Z28 Coupe RWD

    -

    Maintenance & Repair

  • 2017 Convertible Camaro 2 Answers

    My Girlfriend has a 2017 Convertible Camaro that just started not recognizing the key fob, the doors unlock but when you get into the car to start it, nothing dead, get out monkey around with key fo...

    2017 Chevrolet Camaro 1LT Convertible RWD

    -

    Maintenance & Repair

Shortcuts

Search Chevrolet Camaro Questions

CarGurus Experts

  • #1
    dandyoun
    Reputation
    2,210
  • #2
    C. Thomas
    Reputation
    2,190
  • #3
    GuruRZRMY
    Reputation
    1,590
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Ford Mustang
33 Great Deals out of 1,565 listings starting at $5,977
Used Chevrolet Corvette
20 Great Deals out of 750 listings starting at $1,850
Used Ford F-150
311 Great Deals out of 13,471 listings starting at $4,888
Used Jeep Grand Cherokee
135 Great Deals out of 3,606 listings starting at $4,295
Used GMC Sierra 1500
127 Great Deals out of 7,869 listings starting at $5,500
Used BMW 3 Series
56 Great Deals out of 1,180 listings starting at $2,500
Used Jeep Wrangler
135 Great Deals out of 5,912 listings starting at $6,500
Used BMW M3
6 Great Deals out of 76 listings starting at $14,995

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.