Question about 1990 Ford Thunderbird

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1990 thunderbird cranks up fine but when shift into drive or reverse car shuts off like turning switch off no jerking or anything engine just stops immediately

Idles fine just kills motor instantly when shift into gear

Posted by Eddie Thompson on

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1 Answer

Jeff Armer

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What happens if you give it a little gas ? Hold the RPM's up , will it keep running then ? How does it Idle , smooth or ruff ? Does the idle seam low ?

Posted on Mar 23, 2015

Testimonial: "shuts down as soon as put in gear. Jeff this suggestion does not work. could it be that a ground wire is broken or some fuse blown and if so which fuse and where locate ground wire thanks Jeff"

  • 2 more comments 
  • Jeff Armer Mar 23, 2015

    Do you have a check engine light lit on the dash ? Give a good look at wiring harness under hood an on the transmission for frayed wiring . With this happening when the vehicle is put into gear you may have a range selctor switch problem !

  • Jeff Armer Mar 23, 2015

    Yea you have a real good one here , sounds like a elctronic problem for sure. Your vehicle has a transmission control module an a gear selector switch an electronic controls in the transmission an has connection to the tps throttle position sensor. these sensor circuits operate on a 5 volt referance from the control modules and if there was a short in the gear selector switch it very well could shut down the engine !

  • Jeff Armer Mar 23, 2015

    If you could find the gear selector switch an disconnect it , an then put it in gear an see if it shuts off the car !

  • Jeff Armer Mar 23, 2015

    The gear selector switch is most likely on the transmission.

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