Mechanics

TACH READING WRONG

2004 Kia Sedona • 6 cylinder FWD Automatic • 86,000 miles

I have a kia sedona 04 engine light is on codes read are p300-306 van run o.K. Tach not reading correct sometimes, have done cam sensor, crank sensor, plugs, checked coils, cleaned and replaced 3 injectors the van ran fine for about 250 miles now again the tach does read correct it goes up and down, mechanic said it could be the ignition fail sensor any ideas?
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Stang66
May 10, 2011.




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