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83 240 running poorly 200

posted by  kitchenrat on  Fri Feb 14 17:54 CST 2014
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last visit: Tue Sep 30 12:32 CST 2014
[RELATED]

my first post here, guys. recently acquired 244, 93,000 miles, manual tranny, very original car. bogs down when trying to accelerate after changing gears. I have just discovered that the fuel tank is not pressurized after driving the car. I recently replaced the cap with a push-to-vent from ipd, so suspect I am not producing pressure or it's venting another way. any help would be appreciated.








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    83 240 running poorly 200

    posted by  someone claiming to be CB on  Sat Feb 15 14:30 CST 2014 [RELATED]

    new to older Volvos.

    My Stock Answer/Lead to Answers

    download this....also go up the Home page for more manuals and wiring diagrams
    pretty good supply in/around yr year in Service Manuals sub head

    Volvo Prob Solver Advanced edition


    http://www.volvowiringdiagrams.com/?dir=volvo/Trouble%20Shooting%20Guides







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    83 240 running poorly 200

    posted by  riverbend on  Sat Feb 15 12:32 CST 2014
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    last visit: Wed Oct 22 15:29 CST 2014
    [RELATED]

    The pressure or lack there of in the fuel tank won't affect how the car runs. Have you tuned up the car since you got it ? Is the fuel pressure regulator any good ?

    Greg







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      83 240 running poorly 200

      posted by  kitchenrat on  Sat Feb 15 13:07 CST 2014
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      last visit: Tue Sep 30 12:32 CST 2014
      [RELATED]

      new cap, rotor, wires and plugs, inspected harness, air supply and vacuum lines. new air filter. has what appears to be a very recent fuel filter.
      in my experience with vintage Mercedes bosch systems the fuel tank always had that "woosh" release of pressure when removing the filler cap. I suspect its there due to the return line delivering pressurized fuel to the tank.

      my running issue is just a little jerkiness in gear at low speeds, especially when releasing the throttle.

      thanks for your reply and any other help I can get here.








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        83 240 running poorly 200

        uid 36077's pic
        posted by  Harry Tuttle on  Sat Feb 15 17:30 CST 2014
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        last visit: Thu May 8 09:38 CST 2014
        [RELATED]

        You might need to check the adjustment of the throttle switch. It may be clicking off too late after you start to open the throttle plate. All you should need is an allen wrench to adjust it. Losten the two bolts and move the whole switch to the position where; as you start to rotate the throttle, the instant it moves you should hear the switch click, and also un-click just before bottoming out to the idle position of the throttle.

        Also, read up on the cleaning the flame trap and also consider replacing O2 sensor if it looks dirty, or at least verify it is operating correctly.
        --
        '82 245 B21F-MPG-LH 1.0, '83 244 B21FT-K-Jet, '86 244 B23F-LH 2.0








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          83 240 running poorly 200

          posted by  kitchenrat on  Sat Feb 15 19:26 CST 2014
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          last visit: Tue Sep 30 12:32 CST 2014
          [RELATED]

          while looking for the flame trap, I came across an engine sensor that had a wire disconnected (probably as a result of my changing the heater hoses), hooked it back up and it's running the way it should. thanks!







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