User Tag List

Reply
 
Thread Tools Rate Thread Display Modes
Old 11-29-2021, 11:54 AM #1
cl4Rk's Avatar
cl4Rk cl4Rk is offline
Member
 
Join Date: Dec 2020
Location: KC
Posts: 618
cl4Rk is just really nice cl4Rk is just really nice cl4Rk is just really nice cl4Rk is just really nice
cl4Rk cl4Rk is offline
Member
cl4Rk's Avatar
 
Join Date: Dec 2020
Location: KC
Posts: 618
cl4Rk is just really nice cl4Rk is just really nice cl4Rk is just really nice cl4Rk is just really nice
P0450 - a story with photos and some questions

So the first time I fired up the 4Runner after the frame swap, I was driving home and after about 30 miles I was getting engine sputter and intermittent power surges, like I was running out of gas, even though I had a half tank.

I pulled over and saw this:


Itís raw gasoline pouring/dripping out from behind the engine bay near the steering gear. Not good.

I traced the gas leak to the EVAP vent hose, which I pulled up and out in this photo:



This vent hose usually attaches to the frame and vents inside the frame via a small plastic fitting. Here are a couple photos of the broken fitting from my old frame:




(If anyone knows the part number for this fitting, please let me know.)

My donor frame didnít have this fitting attached and my old one was broken, so this vent hose was just more or less dangling freely, which actually made it much easier to find the leak. If it had been venting inside the frame, the gasoline would have likely been leaking further back (if at all) which would have thrown me off.

So I found the leak; thatís good. But why?! Why is there gasoline pouring out of my EVAP vent hose?!

Turns out two fuel lines were switched. Hereís a photo of the switched fuel lines, taken in front of the gas tank looking back:


I switched these two lines back to their correct places, crossed my fingers, and turned the key.

Everything started up and sounded good. I let it idle for a while to watch that EVAP vent hose and make sure no additional gasoline was leaking. After about 10 minutes, with everything looking good, I continue the drive home.

After another few miles I get a check engine light. I read the code and itís a P0450:



Iím not surprised I get a EVAP-related code: gasoline was just pouring out of the charcoal canister! I clear the code and carry on.

Now itís been maybe a hundred miles, and everything is running fine (other than a little valve lifter noise ó a topic for another dayÖ).

But this code keeps coming back about every 25 miles.


I donít really know much about our EVAP systems. So, my questions:

1. Are there any negative side-effects or consequences by ignoring this code? (Iím in a no-inspection state, Iím really only asking about vehicle health.)

2. Is my charcoal canister ruined? Or will it eventually dry out?

3. Should I replace my canister? Pressure sensor? Both? Neither?

Thanks all. This forum is the best!!
__________________
2000 Toyota 4Runner SR-5 3.4L V6 4WD AT Sunfire Red Pearl "Ol' Ruby" - build thread

Last edited by cl4Rk; 11-29-2021 at 12:22 PM.
cl4Rk is offline   Reply With QuoteReply With Quote
Old 11-29-2021, 12:02 PM #2
shadow247's Avatar
shadow247 shadow247 is offline
Senior Member
 
Join Date: Feb 2012
Location: DFW, TX
Posts: 1,731
shadow247 is a jewel in the rough shadow247 is a jewel in the rough shadow247 is a jewel in the rough
shadow247 shadow247 is offline
Senior Member
shadow247's Avatar
 
Join Date: Feb 2012
Location: DFW, TX
Posts: 1,731
shadow247 is a jewel in the rough shadow247 is a jewel in the rough shadow247 is a jewel in the rough
NO issues, as you don't have TRAC/VSC that would be disabled with a check engine light.

Otherwise, just send it. EVAP system just recycles the vapors back into the fuel tank to prevent them from reaching the atmosphere.

As long as it's not pouring gas, just send it. The charcoal media is likely saturated with fuel, which will certainly cause an issue with the evap system. There's a few videos out there about rebuilding charcoal canisters (not specific to 3rd gen 4runners), that may be of some interest.
__________________

The 4Runner Show
shadow247 is offline   Reply With QuoteReply With Quote
Old 11-29-2021, 12:27 PM #3
Bad Luck Bad Luck is offline
Senior Member
 
Join Date: Feb 2019
Location: Hot Springs, AR
Posts: 2,494
Real Name: Patrick
Bad Luck has much to be proud of Bad Luck has much to be proud of Bad Luck has much to be proud of Bad Luck has much to be proud of Bad Luck has much to be proud of Bad Luck has much to be proud of Bad Luck has much to be proud of Bad Luck has much to be proud of
Bad Luck Bad Luck is offline
Senior Member
 
Join Date: Feb 2019
Location: Hot Springs, AR
Posts: 2,494
Real Name: Patrick
Bad Luck has much to be proud of Bad Luck has much to be proud of Bad Luck has much to be proud of Bad Luck has much to be proud of Bad Luck has much to be proud of Bad Luck has much to be proud of Bad Luck has much to be proud of Bad Luck has much to be proud of
I wouldn't be concerned about it, but I would check for codes every month or so to see if you have any other codes going on.
__________________
2000 Limited V6 Auto E-Locker
Bad Luck is offline   Reply With QuoteReply With Quote
Old 11-29-2021, 12:45 PM #4
cl4Rk's Avatar
cl4Rk cl4Rk is offline
Member
 
Join Date: Dec 2020
Location: KC
Posts: 618
cl4Rk is just really nice cl4Rk is just really nice cl4Rk is just really nice cl4Rk is just really nice
cl4Rk cl4Rk is offline
Member
cl4Rk's Avatar
 
Join Date: Dec 2020
Location: KC
Posts: 618
cl4Rk is just really nice cl4Rk is just really nice cl4Rk is just really nice cl4Rk is just really nice
Thanks @shadow247 , thank you @Bad Luck

This all confirms what another mechanic told me. I really appreciate the help.

I might end up fixing this eventually because I hate the CEL but at least now I know it can be last on the list...
__________________
2000 Toyota 4Runner SR-5 3.4L V6 4WD AT Sunfire Red Pearl "Ol' Ruby" - build thread

Last edited by cl4Rk; 11-29-2021 at 12:52 PM.
cl4Rk is offline   Reply With QuoteReply With Quote
Old 11-29-2021, 02:21 PM #5
fatherdoug's Avatar
fatherdoug fatherdoug is offline
Member
 
Join Date: Mar 2006
Location: Montana
Posts: 61
fatherdoug is on a distinguished road
fatherdoug fatherdoug is offline
Member
fatherdoug's Avatar
 
Join Date: Mar 2006
Location: Montana
Posts: 61
fatherdoug is on a distinguished road
I used to get the "0450" code on a regular basis. Since the gas gauge didn't show full after topping the tank, I was overfilling the tank. Now I add gas once more after the gas hose shuts off, then call it good. I cleared the code and have not had the code come in for about 3 months now. Just confirming what other people have said. I think I was saturating the carbon canister.
__________________
My other 4Runner is a ford
fatherdoug is offline   Reply With QuoteReply With Quote
Old 11-29-2021, 02:57 PM #6
HiLife HiLife is offline
Senior Member
 
Join Date: Mar 2014
Location: Trying to figure this out
Posts: 1,289
HiLife is a jewel in the rough HiLife is a jewel in the rough HiLife is a jewel in the rough
HiLife HiLife is offline
Senior Member
 
Join Date: Mar 2014
Location: Trying to figure this out
Posts: 1,289
HiLife is a jewel in the rough HiLife is a jewel in the rough HiLife is a jewel in the rough
Could be 77775-35010 is the one you need.
HiLife is offline   Reply With QuoteReply With Quote
Old 11-29-2021, 03:50 PM #7
cl4Rk's Avatar
cl4Rk cl4Rk is offline
Member
 
Join Date: Dec 2020
Location: KC
Posts: 618
cl4Rk is just really nice cl4Rk is just really nice cl4Rk is just really nice cl4Rk is just really nice
cl4Rk cl4Rk is offline
Member
cl4Rk's Avatar
 
Join Date: Dec 2020
Location: KC
Posts: 618
cl4Rk is just really nice cl4Rk is just really nice cl4Rk is just really nice cl4Rk is just really nice
Quote:
Originally Posted by HiLife View Post
Could be 77775-35010 is the one you need.
I think you're right!!

EDIT: and after looking at the parts diagram, it looks like my EVAP breather vent hose is on upside-down. The shorter rubber length with the more pronounced hook shape attaches to the outlet on the charcoal canister. That explains why it was a little hard for me to clip the hose into place properly...
__________________
2000 Toyota 4Runner SR-5 3.4L V6 4WD AT Sunfire Red Pearl "Ol' Ruby" - build thread

Last edited by cl4Rk; 11-29-2021 at 03:58 PM.
cl4Rk is offline   Reply With QuoteReply With Quote
Old 11-29-2021, 04:06 PM #8
mtbtim's Avatar
mtbtim mtbtim is offline
Senior Member
 
Join Date: Feb 2015
Location: San Jose, California
Age: 56
Posts: 4,624
Real Name: Tim
mtbtim has a brilliant future mtbtim has a brilliant future mtbtim has a brilliant future mtbtim has a brilliant future mtbtim has a brilliant future mtbtim has a brilliant future mtbtim has a brilliant future mtbtim has a brilliant future mtbtim has a brilliant future mtbtim has a brilliant future mtbtim has a brilliant future
mtbtim mtbtim is offline
Senior Member
mtbtim's Avatar
 
Join Date: Feb 2015
Location: San Jose, California
Age: 56
Posts: 4,624
Real Name: Tim
mtbtim has a brilliant future mtbtim has a brilliant future mtbtim has a brilliant future mtbtim has a brilliant future mtbtim has a brilliant future mtbtim has a brilliant future mtbtim has a brilliant future mtbtim has a brilliant future mtbtim has a brilliant future mtbtim has a brilliant future mtbtim has a brilliant future
Well, it all depends what kind of smog laws you got in your area of the country. I know in California, you couldn't pass smog with those CEL codes, thus you can't register your vehicle. With the codes popping up every 25 miles, you might not be able to complete the drive cycle to reset the system to be ready for a smog test. As soon as they hook up their computer to your rig, they will quickly tell you you're not going to pass.

So, if your smog laws are similar, you can send it or not be worried about it until it becomes time to renew your registration. At that point, you're going to have to do something about it or deal with what happens when you have expired tags.

If you decide you're going to replace your Evap Canister, there's a guy, Josh, up in Washington that parts out 3rd and 4th Gen 4runners. I recently bought an Evap Canister from him for a 3.0 to 3.4 Swap project on a 2nd Gen 4runner. Josh is a good dude, sells parts for a very fair price and he ships quickly.
__________________
"My old man is a television repairman, he's got this ultimate set of tools. I can fix it!"

Last edited by mtbtim; 11-29-2021 at 04:10 PM.
mtbtim is offline   Reply With QuoteReply With Quote
Old 11-29-2021, 04:14 PM #9
cl4Rk's Avatar
cl4Rk cl4Rk is offline
Member
 
Join Date: Dec 2020
Location: KC
Posts: 618
cl4Rk is just really nice cl4Rk is just really nice cl4Rk is just really nice cl4Rk is just really nice
cl4Rk cl4Rk is offline
Member
cl4Rk's Avatar
 
Join Date: Dec 2020
Location: KC
Posts: 618
cl4Rk is just really nice cl4Rk is just really nice cl4Rk is just really nice cl4Rk is just really nice
Quote:
Originally Posted by mtbtim View Post
Well, it all depends what kind of smog laws you got in your area of the country. I know in California, you couldn't pass smog with those CEL codes, thus you can't register your vehicle.

So, if your smog laws are similar, you can send it or not be worried about it until it becomes time to renew your registration. At that point, you're going to have to do something about it or deal with what happens when you have expired tags.

If you decide you're going to replace your Evap Canister, there's a guy, Josh, up in Washington that parts out 3rd and 4th Gen 4runners. I recently bought an Evap Canister from him for a 3.0 to 3.4 Swap project on a 2nd Gen 4runner. He's a good dude and ships quickly. Josh is a good dude, sells parts for a very fair price and he ships quickly.
Thanks Tim! If you have any contact info for Josh, please private message me if it's not too much trouble.

As far as registration, I'm in a no-inspection state. No smog checks, no safety inspection, nothing. I just pay online once a year and they mail me new tags.

Anyway, I also just want to thank you for all your videos! They are truly invaluable.
__________________
2000 Toyota 4Runner SR-5 3.4L V6 4WD AT Sunfire Red Pearl "Ol' Ruby" - build thread
cl4Rk is offline   Reply With QuoteReply With Quote
Old 11-29-2021, 06:42 PM #10
mtbtim's Avatar
mtbtim mtbtim is offline
Senior Member
 
Join Date: Feb 2015
Location: San Jose, California
Age: 56
Posts: 4,624
Real Name: Tim
mtbtim has a brilliant future mtbtim has a brilliant future mtbtim has a brilliant future mtbtim has a brilliant future mtbtim has a brilliant future mtbtim has a brilliant future mtbtim has a brilliant future mtbtim has a brilliant future mtbtim has a brilliant future mtbtim has a brilliant future mtbtim has a brilliant future
mtbtim mtbtim is offline
Senior Member
mtbtim's Avatar
 
Join Date: Feb 2015
Location: San Jose, California
Age: 56
Posts: 4,624
Real Name: Tim
mtbtim has a brilliant future mtbtim has a brilliant future mtbtim has a brilliant future mtbtim has a brilliant future mtbtim has a brilliant future mtbtim has a brilliant future mtbtim has a brilliant future mtbtim has a brilliant future mtbtim has a brilliant future mtbtim has a brilliant future mtbtim has a brilliant future
Quote:
Originally Posted by cl4Rk View Post
Thanks Tim! If you have any contact info for Josh, please private message me if it's not too much trouble.

As far as registration, I'm in a no-inspection state. No smog checks, no safety inspection, nothing. I just pay online once a year and they mail me new tags.

Anyway, I also just want to thank you for all your videos! They are truly invaluable.
You're lucky you don't have to deal with smog checks.

Here's a link to PNW 4runner Connection:
登录 Facebook

Great to hear you're finding our videos useful.
__________________
"My old man is a television repairman, he's got this ultimate set of tools. I can fix it!"
mtbtim is offline   Reply With QuoteReply With Quote
Old 12-02-2021, 04:27 PM #11
cl4Rk's Avatar
cl4Rk cl4Rk is offline
Member
 
Join Date: Dec 2020
Location: KC
Posts: 618
cl4Rk is just really nice cl4Rk is just really nice cl4Rk is just really nice cl4Rk is just really nice
cl4Rk cl4Rk is offline
Member
cl4Rk's Avatar
 
Join Date: Dec 2020
Location: KC
Posts: 618
cl4Rk is just really nice cl4Rk is just really nice cl4Rk is just really nice cl4Rk is just really nice
So, the P0450 said very clearly that there was a malfunction in the EVAP Pressure Sensor circuit.

Well... guess what?! My EVAP Pressure Sensor was not plugged in all the way!! LOL

Now, my charcoal canister is still toast from getting saturated with raw gasoline, so simply plugging in this sensor won't solve all my EVAP issues. But still... it's a good lesson for me to remember the next time I get a CEL or some other symptom!
__________________
2000 Toyota 4Runner SR-5 3.4L V6 4WD AT Sunfire Red Pearl "Ol' Ruby" - build thread
cl4Rk is offline   Reply With QuoteReply With Quote
Old 12-02-2021, 08:12 PM #12
T4topher's Avatar
T4topher T4topher is offline
Member
 
Join Date: Sep 2018
Location: San Francisco Ca
Posts: 788
T4topher is just really nice T4topher is just really nice T4topher is just really nice T4topher is just really nice T4topher is just really nice
T4topher T4topher is offline
Member
T4topher's Avatar
 
Join Date: Sep 2018
Location: San Francisco Ca
Posts: 788
T4topher is just really nice T4topher is just really nice T4topher is just really nice T4topher is just really nice T4topher is just really nice
Quote:
Originally Posted by cl4Rk View Post
So, the P0450 said very clearly that there was a malfunction in the EVAP Pressure Sensor circuit.

Well... guess what?! My EVAP Pressure Sensor was not plugged in all the way!! LOL

Now, my charcoal canister is still toast from getting saturated with raw gasoline, so simply plugging in this sensor won't solve all my EVAP issues. But still... it's a good lesson for me to remember the next time I get a CEL or some other symptom!
Funny story, when I was doing my f150 tank I switched the exact same lines.. Same exact thing happened truck started stalling and gas poured out of frame. Instantly knew what I had done switched the lines on the side of the road and pulled the evap canister out, i must of shaken a gallon of gas out of that thing before nothing was coming out.. Truck runs fine now though no codes so far.. Always a fun time getting covered in gas on the side of the road, Iím just glad my truck didnít burn to the ground.
__________________
T4Tophers build (click here)
T4topher is offline   Reply With QuoteReply With Quote
Old 12-02-2021, 09:42 PM #13
cl4Rk's Avatar
cl4Rk cl4Rk is offline
Member
 
Join Date: Dec 2020
Location: KC
Posts: 618
cl4Rk is just really nice cl4Rk is just really nice cl4Rk is just really nice cl4Rk is just really nice
cl4Rk cl4Rk is offline
Member
cl4Rk's Avatar
 
Join Date: Dec 2020
Location: KC
Posts: 618
cl4Rk is just really nice cl4Rk is just really nice cl4Rk is just really nice cl4Rk is just really nice
Quote:
Originally Posted by T4topher View Post
Funny story, when I was doing my f150 tank I switched the exact same lines.. Same exact thing happened truck started stalling and gas poured out of frame. Instantly knew what I had done switched the lines on the side of the road and pulled the evap canister out, i must of shaken a gallon of gas out of that thing before nothing was coming out.. Truck runs fine now though no codes so far.. Always a fun time getting covered in gas on the side of the road, Iím just glad my truck didnít burn to the ground.
How many miles since that happened?

And yes it's very fun getting covered in gasoline on the side of the road. For some reason I was surprised when gas poured all over me when I pulled those fuel lines LOL. Anyway, I now keep a fire extinguisher mounted in front of the driver's seat.
__________________
2000 Toyota 4Runner SR-5 3.4L V6 4WD AT Sunfire Red Pearl "Ol' Ruby" - build thread
cl4Rk is offline   Reply With QuoteReply With Quote
Old 12-02-2021, 10:25 PM #14
T4topher's Avatar
T4topher T4topher is offline
Member
 
Join Date: Sep 2018
Location: San Francisco Ca
Posts: 788
T4topher is just really nice T4topher is just really nice T4topher is just really nice T4topher is just really nice T4topher is just really nice
T4topher T4topher is offline
Member
T4topher's Avatar
 
Join Date: Sep 2018
Location: San Francisco Ca
Posts: 788
T4topher is just really nice T4topher is just really nice T4topher is just really nice T4topher is just really nice T4topher is just really nice
Quote:
Originally Posted by cl4Rk View Post
How many miles since that happened?

And yes it's very fun getting covered in gasoline on the side of the road. For some reason I was surprised when gas poured all over me when I pulled those fuel lines LOL. Anyway, I now keep a fire extinguisher mounted in front of the driver's seat.
Maybe 300 miles ago or so, I don’t drive it much as I have a separate DD. I was surprised at how much was coming out of the lines too lol.
__________________
T4Tophers build (click here)
T4topher is offline   Reply With QuoteReply With Quote
Old 12-10-2021, 10:50 AM #15
cl4Rk's Avatar
cl4Rk cl4Rk is offline
Member
 
Join Date: Dec 2020
Location: KC
Posts: 618
cl4Rk is just really nice cl4Rk is just really nice cl4Rk is just really nice cl4Rk is just really nice
cl4Rk cl4Rk is offline
Member
cl4Rk's Avatar
 
Join Date: Dec 2020
Location: KC
Posts: 618
cl4Rk is just really nice cl4Rk is just really nice cl4Rk is just really nice cl4Rk is just really nice
Following up after about a week of driving after reconnecting the EVAP Pressure Sensor.

So far I haven't seen any CELs or DTCs or had any symptoms at all. This mirrors @T4topher 's experience of no symptoms or codes after switching the fuel lines back to their correct positions. (Different vehicle, I know, but it still seems relevant.)

So, I think I'll just leave well enough alone.
I won't worry about my EVAP system until I start experiencing symptoms or see a DTC.

But I'm still curious about this. I guess flooding the charcoal canister with gasoline didn't cause any long-term issues? Did the gas in the canister just evaporate off and everything is fine now?
__________________
2000 Toyota 4Runner SR-5 3.4L V6 4WD AT Sunfire Red Pearl "Ol' Ruby" - build thread
cl4Rk is offline   Reply With QuoteReply With Quote
Reply

Tags
code , frame , gasoline , miles , vent

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Another MPG SOB story Vulgarian 5th gen T4Rs 80 08-04-2016 08:25 PM
Story of Gas michael33r 3rd gen T4Rs 25 06-25-2015 03:20 PM
Hey, I have a sad story panda4r New Members 4 04-16-2015 09:39 PM
Everyone's got a story DannyLlama Off Topic 7 01-08-2014 06:20 PM
My story 88rnr New Members 4 12-09-2012 09:28 PM

Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 07:01 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2022, vBulletin Solutions Inc.
Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2022 DragonByte Technologies Ltd.
Feedback Buttons provided by Advanced Post Thanks / Like (Lite) - vBulletin Mods & Addons Copyright © 2022 DragonByte Technologies Ltd.
User Alert System provided by Advanced User Tagging (Lite) - vBulletin Mods & Addons Copyright © 2022 DragonByte Technologies Ltd.
***This site is an unofficial Toyota site, and is not officially endorsed, supported, authorized by or affiliated with Toyota. All company, product, or service names references in this web site are used for identification purposes only and may be trademarks of their respective owners. The Toyota name, marks, designs and logos, as well as Toyota model names, are registered trademarks of Toyota Motor Corporation***Ad Management plugin by RedTyger
 
Copyright © 2020