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    Random Idle Surging w/cel

    I've got an 87 325is that will run fine for days and then randomly start to idle surge at a stop light with the cel on. If I shut off the car and turn in back on, it runs fine. I have 153 dme so I can't check the codes but does anyone have any idea as to what might be causing this?

    #2
    random vacuum leaks. Check the elbows going into the throttle body.

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      #3
      Originally posted by dnguyen1963 View Post
      random vacuum leaks. Check the elbows going into the throttle body.
      Better yet, have a smoke test run and find all the leaks.
      The car makes it possible, but the driver makes it happen.
      Jim Levie, Huntsville, AL

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        #4
        had a similar issue at stop lights. ended up being the hose that connects from the valve cover to the intake manifold.
        www.instagram.com/snwmble
        #snwmble

        Current:
        '05 BMW M3 - Silver Grey/Imola Red
        '90 BMW 325iX - Sterling Silver/Houndstooth sport(5-speed converted)
        '15 Mini Countryman - Blazing Red/Carbon Black

        Past:
        '01 Audi Allroad - Light Silver/Platinum Saber Black
        '88 BMW 325iX - Diamond Schwarz/Silver sport *Sold*
        '01.5 1.8TQ - Brilliant Black/Nogaro Alcantara ...after 8.5yrs, *Sold* =(
        '90 BMW 325i - Schwarz/Tan sport *Sold*
        '89 BMW 325ix - Diamond Schwarz/Black sport *Sold*

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