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dead spot @22-2500 rpm

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Old 06-26-2010, 04:22 PM
1957belair's Avatar
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Default dead spot @22-2500 rpm
I have a 98 f150 4.6 and at 2200-2500 it feels like someone pulls 2 plug wires off and it looses power. I have changed 02 sensors and plugs and wires and fuel filter could it be a bad injector? the truck has 150,000 miles on it. thanks for any info
 
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Old 06-26-2010, 07:26 PM
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I don't believe one injector would cause you to lose that much power at that RPM. I would be suspicious of a coil problem or losing a crank sensor signal .
hanky
 
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Old 06-27-2010, 04:45 AM
1957belair's Avatar
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thanks Hanky I will look into that
 
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Old 07-05-2010, 05:32 AM
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Just a quick update... I replaced both coil packs this weekend( $103) from Autozone and all the problems disappeared. Thanks
 
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