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1987 Ford Mustang LX 2D Hatchback

1987 Ford Mustang
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April 4, 2011, 8:14 am

AutomotiveForums M

Question: tachometer problems

recently my car was missing when i would get to 45-50 mph. i have changed the spark plugs, wires, fuel filter, and air filter. it stopped missing but now every once in a while when i have it on cruise control doing about 70-75 mph the tachometer will go from 2000 rpms to 5000 rpms and the engine will rev up. it will do this for a few seconds and go back to 2000 rpms.


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