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4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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Old 02-04-2008
mazzman's Avatar
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Location: San Diego
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how often?

how often do you change your o2 sensors, plugs and plug wires? i have 53 k on my ranger and i was wonderin if they need changing. idk when/if it was ever done before, got the truck from a dealer who got the truck as a trade-in. thanks
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Old 02-04-2008
Join Date: Aug 2004
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I changed my plugs at 60, will change the wires at 90, and wonder the same thing about the O2 sensors.
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Old 02-04-2008
GearBoxKevin's Avatar
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Location: North Georgia
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I changed my factory plugs,wires, and 02's at 85K.

I would change the 02's around 75-90K and forget about them.
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Old 02-04-2008
Join Date: Aug 2004
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How many of them are there, and where are they?
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Old 02-05-2008
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I believe on my '01 4.0L, there's two...possibly 3.
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Old 02-05-2008
sambob117's Avatar
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Plugs And Wires @ 50k
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Old 02-05-2008
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Thier life expectancy is generally 100k miles.

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