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Old May 15, 2006 | 10:40 PM
  #1  
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fordfan78
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Smile the shakes

Im having a problem with my truck shaking at around 1500 rpms. I changed the plugs and wires but the problem still exists. When it is in park, the rpms are at 650.

Any help would be greatly appreciated. 4.2 v6 2000
 
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Old May 15, 2006 | 10:46 PM
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restogreen
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A friend of mine has a 5.4 that had same problem. He had "Autozone " hook up code analyzer. They found a bad #3 coil pack. He had changed plugs and wires as well. Now problem has been corrected. Coil pack cost around $55......

Restogreen
 
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Old May 17, 2006 | 06:00 AM
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...Welcome fordfan to Ford Truck Enthusiasts!

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Old May 21, 2006 | 11:10 PM
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650 is a little low for in Park. Should be above 700 atleast. So probably is something in your ignition system as mentioned above.
 
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