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Old 03-24-2020, 06:29 PM #1
RunninV8 RunninV8 is offline
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Fuel Evaporation Check - Run Time

Hello,
I have a 2014 4Runner with well over 100k on it (bought new). For the first time yesterday I was working in my garage and noticed what I would describe as an electric whir noise coming from the rear of the vehicle. I jumped on the forum and found others with a similar wonder about the sound. It had in fact been roughly 5 hours since the vehicle had been running, so I diagnosed it as the procedural Fuel Evaporation Check (not a problem).

However, my vehicle has been making this sound for what seem like close to an hour. Is that normal? I imagined this would be more of a 5 minute operation. Is my vehicle and this system operating properly? Thank you.
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Old 03-24-2020, 06:46 PM #2
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Mine has almost always lived outside, but the few times it was garaged the sound never ran for longer than a few minutes.

The fuel caps do go bad on these, mine made the fuel gauge malfunction.

Get a new fuel cap and see if it fixes things.
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Old 03-24-2020, 07:05 PM #3
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Quote:
Originally Posted by LandCruiser View Post
Mine has almost always lived outside, but the few times it was garaged the sound never ran for longer than a few minutes.

The fuel caps do go bad on these, mine made the fuel gauge malfunction.

Get a new fuel cap and see if it fixes things.
Thanks Big Landy. Luckily they're cheap, so I am going to throw $17 at it. I haven't had a check engine lights or degradation of fuel economy, but an inability to pressurize does make sense. Thank you!
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Old 03-24-2020, 07:06 PM #4
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Quote:
Originally Posted by RunninV8 View Post
Thanks Big Landy. Luckily they're cheap, so I am going to throw $17 at it. I haven't had a check engine lights or degradation of fuel economy, but an inability to pressurize does make sense. Thank you!
Make sure to get Toyota OEM or it may not seal right.
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