1986 vovlo 740 gle cutting on and off and poor gas mileage

Discussion in 'Volvo 740' started by pepe256, Sep 3, 2005.

  1. pepe256

    pepe256 Guest

    Hello I have a few problems.I have a 1986 volvo 740 gle and I am getting
    poor mileage.And when Im driving it like just starts cutting in and out
    and im getting backfire often and when Istart it it revs to around 2000rpm
    then goes down to around 1500 but shouldnt it be lower? please post any
    suggestions.
     
    pepe256, Sep 3, 2005
    #1
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  2. pepe256

    James Sweet Guest

    Vacuum leaks are the first thing to check for.
     
    James Sweet, Sep 3, 2005
    #2
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  3. pepe256

    pepe256 Guest

    I have already replaced the air intake hose and fixed a slit vacuum line
    and that helped a little.Then on the idle section could it possibly be the
    idle control valve causing the eraticc idle?
     
    pepe256, Sep 3, 2005
    #3
  4. pepe256

    James Sweet Guest

    Could be, but usually that just sticks and results in too high or low idle.
    You probably have more vacuum leaks, they can be hard to track down.
     
    James Sweet, Sep 3, 2005
    #4
  5. pepe256

    pepe256 Guest

    thanks for the help ill try it tommorow any suggestions on how to track
    down a vacuum leak?
     
    pepe256, Sep 3, 2005
    #5
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