1. Hello there guest and Welcome to Fox Body Mustangs forum, This forum is intended to be used by enthusiasts of the Fox body Ford Mustangs (1979-1993)!
    To gain full access you must Register. Registration is free and it takes only a few moments to complete.
    Already a member? Login here then!

    Dismiss Notice

Vacuum issue erratic idle problem

Discussion in 'Technical, Maintenance and Modification' started by MustangMike, May 9, 2018.

  1. MustangMike

    MustangMike New Member

    17
    1
    3
    Any help or info on vacuum lines would help I'm a newb so anything in laymen's terms will help. Thx
     
  2. Redtwilight

    Redtwilight Shinigami

    132
    61
    28
    What specifically are you needing?
     
  3. MustangMike

    MustangMike New Member

    17
    1
    3
    Looking for sum direction on where maybe to start thx
     
  4. Redtwilight

    Redtwilight Shinigami

    132
    61
    28
    What is it that is going on that you are trying to fix? Is it HVAC related? Engine not running correctly related? Are you trying to locate a leak? etc...

    I guess a good place to start with any of it would be the Vacuum Tree located on the driver side of the firewall. Another place is where the vacuum lines come from the rear of the intake. Then from there follow them to there respective locations.
    A couple go to a little diaphragm looking thing then go through the firewall into the cabin to control the HVAC.
    Another set goes to the EGR system on the passenger side on the engine.
     
    MustangMike likes this.
  5. Redtwilight

    Redtwilight Shinigami

    132
    61
    28
    One way to find a vacuum leak is to spray some starting fluid around the vacuum lines while the engine is running and listen for a change in engine speed.

    Also if it's not a vacuum leak causing the erratic idle; check the Idle Air Control valve. It may need cleaning or replaced.
     
  6. MustangMike

    MustangMike New Member

    17
    1
    3
    Will do and hey thanks a bunch big guy I really appreciate people like u this world can always use aa lil hand up kindness and help goes a long long way #way2go I'm a fan!
     
    Redtwilight likes this.
  7. MustangMike

    MustangMike New Member

    17
    1
    3
    Hey bro just found this 1 on advanced auto parts is this the 130 amp alternator needed for the Foxbody upgrade it says for a 94 mustang but seems to be same i looked at on lmr site i know ill need the 4 g cable and fuse block also i think thx again Screenshot_2018-05-10-21-47-42.png
     

Share This Page