740 boggs down....intermittently

Discussion in 'Volvo 740' started by Tammy, Dec 19, 2003.

  1. Tammy

    Tammy Guest

    Hello,
    I am having an occasional problem with my 1990 740 Turbo wagon.

    I was driving for about 15 minutes when the car started to bog down
    when I pushed the throttle. As long as the throttle was only slightly
    open, the car would run, but when I tried to accelerate, it would bog
    and the engine would start to "miss" and almost stall. I put the car
    in neutral while coasting and was able to rev the engine as long as I
    barely opened the throttle. Once again the engine would miss and
    almost die when I tried to rev the engine quickly in neutral. The
    further I drove, the worse it got. At first I could not go over 2500
    rpm without it bogging down, then I could maintain 2000 rpm, then 1500
    then..... it would only run when idling. As soon as I would hit the
    accelerator, it would almost stall, however, I could quickly release
    the throtle and it would return to idling. The problem continued to
    worsen until the car finally stalled on its own. However, here is the
    interesting part: after the car stalled, I started the engine again
    and it worked fine!!? It has now been running perfectly for a couple
    of days.

    This is the second time my car has done this. I have checked the
    computer trouble codes, but it flashes 1-1-1 (everything normal). It
    is hard to troubleshoot further until it starts acting up again, so I
    don't even know where to look.

    Has anyone ever enocounterd this problem before? I would be greatful
    for any advice.

    Thanks,
    Tammy
     
    Tammy, Dec 19, 2003
    #1
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  2. Tammy

    Vrparts Guest

    Clogged Fuel Filter
    Had
    79 245 D,
    81 240 D,
    86 240 320,000mi and running fine when traded
    94 944 Green 257,503 mi CRUNCH Parted out
    Have
    94 944 White 149,000 The New one
    94 944 Maroon 135,000 mi
     
    Vrparts, Dec 20, 2003
    #2
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  3. Tammy

    Ecomoda Guest

    Yes. I'd have to say it has something to do with the fuel system. In tank
    pump filter, the other pumps filter.
     
    Ecomoda, Dec 20, 2003
    #3
  4. Tammy

    D. Turner Guest

    D. Turner, Dec 21, 2003
    #4
  5. Tammy

    Perry Noid Guest

    I have similar problems with my '89 240 wagon... found that if I shut the
    engine off, then remove and reattach the connector to the Air Mass Meter
    several times (to clean the contacts) it does fine for months before it
    repeats... might be worth a try!

    m9876c at yahoo dot com
     
    Perry Noid, Dec 21, 2003
    #5
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