Question about 2000 Ford Taurus

2 Answers

Havr replaced idal air control ,cam pison senser , mass air senser and still wont idle . the coades still tells to replace agean. where do i look next? p.s. have also replaced the PCM

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  • ros Jul 31, 2010

    fuel pressure is 50 lbs ,wont idle haft to run @1000 rpm codrs are P0103 , P0340 , P1540 have replaced mass flow sencer, cam sencer, idal air sencer &pcm 2 times each

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2 Answers

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  • Ford Master
  • 6,927 Answers

What engine is this? and the year?If the codes are pointing at what you have replaced,then there may be another explanation.

Posted on Jul 31, 2010

  • 10 more comments 
  • ros Jul 31, 2010

    this is a 2000 ford taurus 3.0

  • ros Jul 31, 2010

    2000 ford taurus 3.0

  • Ronny Bennett Sr.
    Ronny Bennett Sr. Jul 31, 2010

    Try and remove the air filter completly,and look in the air box for obstruction,then leave the air filter out,and start the engine see how it runs.

  • ros Aug 01, 2010

    new air filter , box clean ,still has a serg and wont idle. check eng. light is on ,

  • Ronny Bennett Sr.
    Ronny Bennett Sr. Aug 01, 2010

    What is the voltage at the battery with the engine running and headlights on,and ac on high blower setting?

  • ros Aug 01, 2010

    1000 RPM , 13.32 volts

  • Ronny Bennett Sr.
    Ronny Bennett Sr. Aug 01, 2010

    Have you erased the codes?If not erase them .The memory of the computer has been learned the bad running condition,erasing them will allow the computer to be relearned,try this if you have not already.I would be looking at the crankshaft sensor,and if this is not the problem,the timing chain maybe loose,and causing the running problem,and codes.

  • ros Aug 01, 2010

    codes have been erased , battery unhooked over night. crankshoft senser 2x new. car &moter one owner with 70028 miles.

  • Ronny Bennett Sr.
    Ronny Bennett Sr. Aug 01, 2010

    Next thing is to check the compression on every cylinder.Then go from there,I just hope the computer itself is good.

  • ros Aug 01, 2010

    will check compressin , but computer changed 2x with rebuld. we thought we had all covered. this all started that it would just die sometimes , now it wont even idle.

  • Ronny Bennett Sr.
    Ronny Bennett Sr. Aug 01, 2010

    Some of these computers have to be reflashed,has this one been on a scanner to reprogram it?If not this maybe all that it is.

  • ros Aug 01, 2010

    will try this

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  • Ford Master
  • 19,396 Answers

Hi.

check the vacuum system for leaks. This is done using an hand gauge on lines while heating up vacuum lines or spraying lubricant on lines. Small vacuum leaks may cause idling problems.

Check the air intake temperature sensor.

Check the fuel pressure.

Try idleing with the gas tank cap open.

Here the gauge to test fuel and vacuum pressure:Lisle 20300 Vacuum/fuel Gauge

It would be useful to know what OBD codes you are getting, this will narrow down troubleshooting.

Posted on Jul 31, 2010

  • ros Jul 31, 2010

    fuel pressuer is 48 lbs. have wiring hornes apart checking for bad conections , will have togetter in about 1 hour. will have OBD codes then.

  • Ginko
    Ginko Aug 02, 2010

    Test continuity (read Ohms to ensure wiring is not broken) on wiring from sensors (MAF AIT) and check PCM connector.

    Ensure you have tested vacuum system for leaks.


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