Question about 1993 Ford Taurus

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Bucks speratically. runs fine then tach goes to zero and idles like a top fuel, up and down quickly. if driving when starts acting funny it bucks terribly. replaced ign. module, alt, batt, have a friend that is pointing at the crank sensor. lookin for some confirmation and possible schematic of how to change it.

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  • boo2jt Mar 12, 2009

    its not a vaccume problem since it is not constant. it can run a day and run like a scalded dog and the next be fine the first time you run it and then run it again then the tach goes to zero and the car starts bucking due to the speratic idle of the engine. then push the clutch in and it stops bucking but still idles speratic. then will clear up and run fine.

  • eriksenmekan May 11, 2010

    Sounds like the engine are getting false air, check the vacuums and the psv valve in top of the cylinder head lid.

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The tach gets it's signal from the coil. chck the conncetion at the coil maybe dirty or loose. hope this helps

Posted on Jul 10, 2009

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I have same problem. hard to start. i'm looking on replacing camshaft sensor. also called CMP sensor

Posted on Mar 13, 2009

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