Fuel cap light on?? - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 08-18-2011
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Icon8 Fuel cap light on??

so while i was driving home last night, my fuel cap light randomly came on. when i got home i checked and re-tightened the fuel cap, and it still won't shut off. what could be wrong? is the light something i can just shut off with an OBDII scanner? please help, the light is really annoying, lol
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Old 08-18-2011
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Easy fix. Just lift the battery terminals for a few minutes. This will reset the computer.
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Old 08-18-2011
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You may need to get a new fuel cap as the old one may be leaking/not sealing.

I believe the whole fuel system is "closed" due to emissions controls, and if the old cap is not holding, it will set off the light.
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Old 08-18-2011
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Quote:
Originally Posted by <TX>TORKiT View Post
Easy fix. Just lift the battery terminals for a few minutes. This will reset the computer.
just be safe with this if ur state inspection is comeing up. lol it will put ur computer into a "not ready state" and will fail the inspection unless driven so many miles 1st seen it happen to way to many people at the place i work at lol. just letting u know
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Old 08-18-2011
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either the fuel cap seal is worn out or you have a large leak in the evap system, large enought the computer thinks it the fuel cap. Those are the easyes leak to find on the evap system.
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Old 08-18-2011
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Originally Posted by fredfx4 View Post
either the fuel cap seal is worn out or you have a large leak in the evap system, large enought the computer thinks it the fuel cap. Those are the easyes leak to find on the evap system.
i looked at the cap and seal last night and it didnt look out of the ordinary to me, but then again maybe i dont know what i'm looking at. didn't think something like that would go bad on an 06...do i have to get a new cap at the dealer? or is that something i can pick up at autozone?
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Old 08-18-2011
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evap canister purge valve tends to stick open causing this ive found on ALOT of vehicles. expeically ones driven down dusty gravle roads
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