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Old Sep 9, 2003 | 10:48 PM
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belly boat's Avatar
belly boat
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running rough
I have a 2001 4.6 auto 4x4 ext cab. At a stop it runs rough and when I put it in neautral it is smooth also when driving it is smooth any thoughts???
 
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Old Sep 10, 2003 | 06:18 AM
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LxMan1
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running rough
Look for vacuum leaks, especially in the PCV area. You might try cleaning the mass-air meter too.
How many miles on it? Might be time for some spark plugs.
Jimmy
 
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Old Sep 10, 2003 | 06:26 AM
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Boss50
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running rough
My dad had an almost similar problem on his '99 4.6. Turned out to be a bad plug wire.
 
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