Question about 1998 Ford Taurus

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Engine fires but stops, holding accelerator will idle

Will turn ignition on, engine rotates and briefly starts - idled around 500 rpm at one point for about 5 secs. When I feather the accelerator the engine will stay running but when I let off it either stops immediately or ides around 500 rpm for a few seconds then dies. The power cable connected to the alternator was fried, I've replaced alternator, the cable end, and the mega fuse but problem still persists.

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  • 2 more comments 
  • bward1010 Nov 15, 2008

    P0340

    Camshaft Postion

    Sensor A-Bank 1

    Circuit Malfunction

  • bward1010 Nov 16, 2008

    I do believe we have spark, all cylinders seem to be firing. Getting ready to change the cam shaft sensor. Any suggestions?

  • bward1010 Nov 16, 2008

    Changed the camshaft position sensor and problem still persists.

  • bward1010 Nov 16, 2008

    So, to my brother-in-law's suggestion, we went to put some premium gasoline in the tank to test the gas. All the gas stations but one were out of mid and high grade. The car will start and idle at 500 rpm and stay on. Thinking of replacing fuel filter as well, couldn't hurt to nickel and dime the car. Will try to get fuel press checked tomorrow and will clean the MAF sensor that you speak of. Anything else I can do? I just realized that I've had the car for 5 years and the previous owner was a little old lady who only drove it 63,000 miles while owning it and I haven't done a good thorough once over I've only fixed what I had to fix at the time. Thanks for all your help. I know where to come now when I start to do projects on my car, which will be more frequent I think.

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  • Ford Master
  • 64,034 Answers

Have you run the test to get the trouble codes out of Powertrain control modules menory, that is a good place to start. post the code(s) back here on this thread and I will help you.

Posted on Nov 15, 2008

  • 2 more comments 
  • yadayada
    yadayada Nov 15, 2008

    You can be pretty sure the cam sensor is defective, but that may not be the only issue, the cam sensor picks up misfires by measuring the acceleration rate of the cam and crank, this relationship will trigger a misfire code if it falls out of the spec in the EPROM chip. I don't think it will cause a no spark, do you have spark?

  • yadayada
    yadayada Nov 16, 2008

    Make sure the fuel press is within specs, also clean the MAF sensor inside.

  • yadayada
    yadayada Nov 16, 2008

    Make sure the fuel press is within specs, also clean the MAF sensor inside.

  • yadayada
    yadayada Nov 16, 2008

    The fuel filter is well past the point where it should have been changed out, get that fuel press checked after the filter is replaced, do you know what and where the MAF is? It is in the air intake hose, round and big with 5 wires? going to it I think.

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