'98 Concorde won't start / dies while driving

Discussion in 'Concorde' started by Joe Brown, Jul 12, 2006.

  1. Joe Brown

    Joe Brown Guest

    I have a 1998 Chrysler Concorde LX, 2.7l, with under 88,000 miles. My wife
    drives it 90% of the time and she keeps telling me of problems starting and
    dying while driving. I have experienced it several times myself, or I
    wouldn't believe her. It seems to die more when under 1/4 tank of fuel, but
    has a hard time starting at various fuel levels, temperatures (ambient and
    engine), and when restarting after it dies. Many times after it dies, it
    will kick and buck upon restart. Sometimes it will die when driving at any
    speed, and other times when stopping. I have taken it to numerous mechanics
    who can find nothing wrong. The plugs and pcv valve have been replaced. I
    replaced the auto shutoff and fuel pump relays which seemed to help for about
    3 months, then it started again. Also, it has been using alot of oil (4-5
    quarts every 3k miles), but no sludge buildup, as it is burning it. Please
    help!
     
    Joe Brown, Jul 12, 2006
    #1
  2. Joe Brown

    Larry Crites Guest

    My 1999 Intrepid (2.7L) would stall when I got down to half a tank. I tried
    the relays, also. Didn't fix it. Dealer couldn't figure anything out. Local
    shop checked everything topside, then went to the tank. The fuel module
    (pump, filter, etc.) would not hold pressure. They replaced the module,
    haven't had a problem since. This may or may not be your problem.

    Larry
    Behold Beware Believe
     
    Larry Crites, Jul 12, 2006
    #2
  3. Joe Brown

    maxpower Guest

    Has the check engine lite ever come on? Did the technician find any fault
    codes in the past?

    Glenn Beasley
    Chrysler Tech
     
    maxpower, Jul 12, 2006
    #3
  4. Joe Brown

    Joe Brown Guest

    The only time it came on, the fault code was for an O2 sensor. I replaced it
    (it was fouled out) and the light never came on again after reset. Techs
    have never found any fault codes and all checked out fine while computer was
    hooked up on test drives. Could O2 sensors cause it to die if fouled by
    contamination from excessive oil burn?
     
    Joe Brown, Jul 12, 2006
    #4
  5. Joe Brown

    Bill Putney Guest

    I tend to agree that a new fuel pump will fix it based on several posts
    of similar symptoms on the 300M forums - seems the OP always posts back
    that ultimately a new fuel pump/sender unit fixed it.

    Bill Putney
    (To reply by e-mail, replace the last letter of the alphabet in my
    address with the letter 'x')
     
    Bill Putney, Jul 12, 2006
    #5
  6. Joe Brown

    maxpower Guest

    If the fuel pump was at fault the car would not just shut off with out
    notice, it would slowly die out or loose power. Once the pump quits there is
    still some fuel pressure in the lines, as the injectors open, the fuel
    pressure gets lower and lower until the engine just stalls out.
    A crank or cam sensor for instance would just shut the engine down with out
    any warning, just like turning off a lite.
    I have seen several problems as the one you are experiencing and have not
    been able to actually verify it but 9 out of 10 times it is the fuel pump.
    Diagnosing the symptoms, replacing the pump and never come back.
    The fuel pump will not set a fault code either but a good technician with a
    good diagnostic scanner may be able to see that the adaptive fuel memory is
    in the high + numbers indicating that it is running lean

    Glenn Beasley
    Chrysler tech
     
    maxpower, Jul 12, 2006
    #6
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