reved engine and it had a loud sound like a vacuum ?

Discussion in 'General Tech' started by steam29, Jan 25, 2015.

  1. steam29

    steam29 New Member

    Messages:
    60
    Likes Received:
    0
    Joined:
    Dec 26, 2014
    could this be the cold air intake? i have only heard this when i reved the engine then you can hear the deep engine under the loud vacuum cleaner sound, it gets louder with the rev and lowers when the rpms are dropping.

    https://soundcloud.com/steam2-1/engine-vacum
     
  2. Adogg

    Adogg New Member

    Messages:
    8
    Likes Received:
    0
    Joined:
    Nov 1, 2014
    it is common for sometimes to hear your intake sucking in air. i usually only hear mine on colder days but possible. are you experiencing any performance loss?
     
  3. steam29

    steam29 New Member

    Messages:
    60
    Likes Received:
    0
    Joined:
    Dec 26, 2014
    well i haven't really driven the mustang because i have not gotten insurance on it yet so i cant really say if i have had performance loss, everything is stock so i dont know if that would play a part in it. it just sounds weird.

    the only example i can give is it sounds like those toy trucks that you have to rev on the ground by pushing it forward like 4 times then letting it go. ( if that makes any sense)

    i will try to upload a video

    edit: https://soundcloud.com/steam2-1/engine-vacum there we go
     
  4. ttocs

    ttocs Legend

    Messages:
    25,446
    Likes Received:
    2,467
    Joined:
    Oct 9, 2009
    Location:
    Evansville Indiana
    it is especially noticeable if you passenger door is open while your in the driver seat.
     
  5. SNorange94

    SNorange94 Member

    Messages:
    115
    Likes Received:
    0
    Joined:
    Mar 12, 2014
    Location:
    Dingmans ferry, PA
    Could it be the smog pump? When I got my car it sounded similar to that. The PO blocked off the smog pump, but left the pump.
     
  6. steam29

    steam29 New Member

    Messages:
    60
    Likes Received:
    0
    Joined:
    Dec 26, 2014
    i was actually out side(on the driver side) and my dad was reving for all i know this could be perfectly normal i just thought i should check first because it sounded odd

    https://soundcloud.com/steam2-1/engine-vacum
     
  7. steam29

    steam29 New Member

    Messages:
    60
    Likes Received:
    0
    Joined:
    Dec 26, 2014
    how would i check that ? still learning about this car haha
     
  8. steam29

    steam29 New Member

    Messages:
    60
    Likes Received:
    0
    Joined:
    Dec 26, 2014
    also where did you get those seats?? they look nice!
     
  9. SNorange94

    SNorange94 Member

    Messages:
    115
    Likes Received:
    0
    Joined:
    Mar 12, 2014
    Location:
    Dingmans ferry, PA
    what year is your car?
    On the 94/95 5.0L the smog pump is towards the passenger side under the alternator and resembles an A/C compressor.
    If you're talking about my seats, thanks they're stock.
     
  10. steam29

    steam29 New Member

    Messages:
    60
    Likes Received:
    0
    Joined:
    Dec 26, 2014
    its a 98 4.6l and alright ill see if can find anything
     
  11. lwarrior1016

    lwarrior1016 Moderator Staff SN95 Supporter

    Messages:
    5,649
    Likes Received:
    670
    Joined:
    Sep 22, 2014
    Location:
    South Mississippi
    Your 4.6 doesn't have a smog pump. The sound you are hearing sounds like it could be the intake. Do you have a cold air intake on it? I noticed the same type of sound when I put the cold air on mine.
     
  12. steam29

    steam29 New Member

    Messages:
    60
    Likes Received:
    0
    Joined:
    Dec 26, 2014
    i don't think so other than the stock one i was thinking of changing it any way though. that was my theory to that it was the intake