My check engine light is going on and off

2003 FORD CROWN VICTORIA
140,000 MILES
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GEORGE #8
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  • 2 POSTS
03 Ford Crown Victoria, ex-Ca highway patrol car, 140K miles, engine light goes off and on, regular miss at idle only, good power. My code scanner says miss at #6 plug. What I have done -
Changed #6 plug and coil. Changed manifold. Changed timing chain guides. Took compression test - left bank of 4 cyl down 20 lbs each from right bank.

Nothing helped - what now?
May 16, 2012 at 8:43 PM
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PAPAJOHNSLICE
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  • 108 POSTS
did you do a wet and dry compression test?
May 16, 2012 at 11:13 PM
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GEORGE #8
  • MEMBER
  • 2 POSTS
Yes, I have done a wet and dry compression test.
May 17, 2012 at 9:05 AM
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CADIEMAN
  • ✓Experienced Mechanic
  • 3,544 POSTS
did you replace the inition wire to 6?
May 17, 2012 at 12:08 PM
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