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Help with fuel filler neck installation

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    • Edited 1 times, last by Apocolyps76 on .
    Hi everyone. I am currently working on a 2009 Scion Tc, it is throwing a P0441 and P0455. Had a smoke test ran and they found a leak around the fuel filler neck. Has anyone ever done an installation on this part? If so how easy is it? Also, what is the name of the rubber seal around the top of the filler neck that is connected to the rear quarter panel behind the fuel door, and does it need to be removed? Any help will be appreciated.
    I haven't looked at the parts diagrams to get the name you're looking for. There is a genuine Toyota parts site, run by toyota. You could look there for a detailed parts diagram. The online toyota dealers sometimes never have the best diagrams.

    But the install should be like any other modern car. Hooked up at the gas door lid area, and down to the tank. Sorry to hear yours rusted out already!! ouch.. But yeah when the computer does the leak down test, it pressurizes the system, any leak will result in a CEL (check engine light) coming on. Glad you had good mechanics who followed that up with a smoke test!

    here's toyota's own parts site.. see if you can find the parts diagram here..

    https://parts.toyota.com/
    ok I couldn't help it.. I looked up the fuel filler neck diagram.. here ya go..

    https://parts.toyota.com/...NK--TUBE/277410-7701.html
    Much appreciated for the responses... It's not actually rusted from what I see. But the smoke test did reveal a leak near the top of the filler neck. Going to be replacing it today.
    Apocolyps76 wrote:
    Much appreciated for the responses... It's not actually rusted from what I see. But the smoke test did reveal a leak near the top of the filler neck. Going to be replacing it today.


    hey glad to help ya! Could be a small pin sized hole, doesn't take much for the evaporative system to catch a leak. Hope it went well for you today! How did it go with the install?
    Thanks... And ya it probably was a pin hole.... But got her finished up today.. About 2 1/2 hours labor total. Took a little longer cuz I had to grind off a busted bolt but the job is done. Now I did get an oem filler neck but it was slightly bigger so I had to remove one big bracket where the hose clamp connects to the rubber, but perfect fit. My gas cap is much tighter now as well.
    Apocolyps76 wrote:
    Thanks... And ya it probably was a pin hole.... But got her finished up today.. About 2 1/2 hours labor total. Took a little longer cuz I had to grind off a busted bolt but the job is done. Now I did get an oem filler neck but it was slightly bigger so I had to remove one big bracket where the hose clamp connects to the rubber, but perfect fit. My gas cap is much tighter now as well.


    hey glad it went well.. and ya rust can definitely require the grinder off of a bolt! so the oem had a bracket on the hose that you had to remove? Interesting.. I see it on the parts diagram number 77276.. but what's odd there's also another hose without that bracket number 77201A.. Looks like a production run change, so you didn't do anything bad by getting rid of what you didn't need! perfect!

    ahh.. so the gas cap was not as tight before? Yup sounds like it was showing ya there it was failing. I've always found that once something is fixed THEN you get to know how it was supposed to be.. Cool.. I looked at your profile, Illinois, yup that makes sense of the rust. Toyota does a good job with rust compared to Honda with my project civic. But after almost 15 years if this is the only rust stuff that caused a problem, doing well!

    I bet now when you go to fill up you'll hear that WHOOSH from the gas cap now! I had to replace the filler neck and tank on the project civic car I'm working on. It had holes in the tank actually! No escaping gas sound! Once fixed it's so strong the escaping vapors cause the cap to rattle slightly! Ya I remember not to undo it all the way!
    No not a bracket on the filler neck it was attached to the undercarriage right below where the hose connects. And ya I hope I got this code fixed now. We will see in about 100 miles.
    Sorry. And as far as the gas cap before the fix I barely had to turn it and it cam right off. Just didn't sit well in there I guess. Definitely not the problem now. She's tight!
    ahh.. I get it now about that bracket. Well at least you got the job done, it's connected 100% and works now! THUMBS UP! And glad to know the cap is nice and tight in there. There's another plus too, if you were losing vapors from the gas tank, you were losing gas! I bet your mpg's/fuel economy goes up now! It did on my project civic car.

    Thanks for the update, glad it's all working well for ya now!
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