To clarify, the EVAP system test won't initiate until 5 hours after the car has been turned off to give the fuel system time to cool down. So if you clear the codes it'll take at least 5 hours after driving to see if what you did fixed the issue.
So glad this video helped you out. I keep all the 4Runner videos in their own playlist to make them easy to find. I've got another video coming out Friday about replacing the cabin air filter that you may like. I was surprised at what I found in mine!
FYI - This is the exact one I used. It's stupid cheap and when used with Torque (phone app) you can see realtime engine data and create custom dashboards. www.amazon.com/dp/B00PJPHEBO/ref=cm_sw_r_cp_apa_fabc_31BM5385T84Y4JTDXV48
I’m getting so frustrated with my Toyota 4Runner 1996. Check engine light is on and I have changed everything under the hood you can think of. It’s still on I put code reader on it .. it says P0302, p0304 and p0306. Any clue on what I should do? How can I fix this problem?
I would do a quick search on those codes and see what others have done. Looks like the car thinks it’s misfiring on cylinders 2, 4, and 6, which could mean you need new plugs, wires, or coil packs. However, there are more things than spark that could cause misfire, so the best thing to do is start with the simple/cheap fix and see where that gets you.
There can be a lot of reasons for an EVAP leak. I suspected my cap was the problem based on a faulty cap seal. Fortunately, this is an easy and inexpensive part to diagnose and change. If you're still getting EVAP related codes, it may be time to look under the hood and check the EVAP system components (canister, solenoid, sensors, etc.) and connecting hoses for leaks. Which code are you getting?
Either. Once the EVAP system is holding vacuum, the computer will eventually reset the code. If this doesn’t work, I would recommend resetting the code to check if it persists. In the video, I skipped this step by resetting the codes using my ODB reader with the engine on. Because the EVAP system was holding vacuum, it no longer triggered the error code. However, if the code doesn’t go away or comes back, you may need to check other parts of your EVAP system for leaks.
My 3rd gen hums when I shut it off. Finally I figured out if I losen the gas cap it stops the humming noises coming from behind the battery under the hood.
You may want to check for vacuum leaks in the EGR, EVAP, or brake booster. These are vacuum powered components on the right side of the engine bay behind the battery. It could be causing a hose or diaphragm to vibrate until the vacuum is equalized. This may be why opening the gas cap fixes the hum because all the vacuum is released.
I really doubt it. These are related to voltage reading from the EVAP pressure switch. I really only think this will work for leaks, but if you've already tried diagnosing the switch you could check the gas cap for damage.
after installed the new gas cap, it requires so many drive cycles because it clears code. It won't clear code right away, that is not the case. It may take a week for it to clear codes.
For mine it did. I cleared the codes on my code reader and the CEL never came back. There are several codes for the severity of EVAP vacuum leak, and this vehicle only had a minor leak. Your experience may vary, but in this case the code did not come back after cleared.
If the peg on the old gas cap retainer snaps off you can just pop in the new gas cap retainer. If the old piece is in the way, push it through with a screwdriver or something so the new peg fits in. You may be able to fish out the piece, but chances are the old piece will not be a problem once the new peg fits in place.
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To clarify, the EVAP system test won't initiate until 5 hours after the car has been turned off to give the fuel system time to cool down. So if you clear the codes it'll take at least 5 hours after driving to see if what you did fixed the issue.
I don't know why this video doesn't have 15M views
🤣🤣🤣 Thanks! I couldn't believe it when just replacing the cap knocked out all 3 codes. CEL is still off and no other EVAP leaks have popped up.
Thank you so much !!! I have an 05 with 230,000 miles and you are my new go to from here on out !!! Bless you
So glad this video helped you out. I keep all the 4Runner videos in their own playlist to make them easy to find. I've got another video coming out Friday about replacing the cabin air filter that you may like. I was surprised at what I found in mine!
Thanks for the scan info too !
That scanner is so cool. I really like the app and how it will lookup codes from the web to help figure out what's wrong.
So helpful I’m ordering that scan thing!
FYI - This is the exact one I used. It's stupid cheap and when used with Torque (phone app) you can see realtime engine data and create custom dashboards. www.amazon.com/dp/B00PJPHEBO/ref=cm_sw_r_cp_apa_fabc_31BM5385T84Y4JTDXV48
@@hayseedfarm thank you ! I’m going to check it out now. Such a great idea.
I’m getting so frustrated with my Toyota 4Runner 1996. Check engine light is on and I have changed everything under the hood you can think of. It’s still on I put code reader on it .. it says P0302, p0304 and p0306. Any clue on what I should do? How can I fix this problem?
I would do a quick search on those codes and see what others have done. Looks like the car thinks it’s misfiring on cylinders 2, 4, and 6, which could mean you need new plugs, wires, or coil packs. However, there are more things than spark that could cause misfire, so the best thing to do is start with the simple/cheap fix and see where that gets you.
What do you do if your gas cap is weirdly loose, I bought a replacement but I’m still getting codes
There can be a lot of reasons for an EVAP leak. I suspected my cap was the problem based on a faulty cap seal. Fortunately, this is an easy and inexpensive part to diagnose and change. If you're still getting EVAP related codes, it may be time to look under the hood and check the EVAP system components (canister, solenoid, sensors, etc.) and connecting hoses for leaks. Which code are you getting?
so those codes came on i bought a new gas cap my question is do i reset the codes with my OBD scanner or do I just wait for them to clear?
Either. Once the EVAP system is holding vacuum, the computer will eventually reset the code. If this doesn’t work, I would recommend resetting the code to check if it persists. In the video, I skipped this step by resetting the codes using my ODB reader with the engine on. Because the EVAP system was holding vacuum, it no longer triggered the error code.
However, if the code doesn’t go away or comes back, you may need to check other parts of your EVAP system for leaks.
Agreed
My 3rd gen hums when I shut it off. Finally I figured out if I losen the gas cap it stops the humming noises coming from behind the battery under the hood.
You may want to check for vacuum leaks in the EGR, EVAP, or brake booster. These are vacuum powered components on the right side of the engine bay behind the battery. It could be causing a hose or diaphragm to vibrate until the vacuum is equalized. This may be why opening the gas cap fixes the hum because all the vacuum is released.
@@hayseedfarm yesterday I did notice a very small leak in between the brake booster and master cylinder.
Getting code p0451 and p0453 could it be the cap?
I really doubt it. These are related to voltage reading from the EVAP pressure switch. I really only think this will work for leaks, but if you've already tried diagnosing the switch you could check the gas cap for damage.
after installed the new gas cap, it requires so many drive cycles because it clears code. It won't clear code right away, that is not the case. It may take a week for it to clear codes.
For mine it did. I cleared the codes on my code reader and the CEL never came back. There are several codes for the severity of EVAP vacuum leak, and this vehicle only had a minor leak. Your experience may vary, but in this case the code did not come back after cleared.
doesn't wiggle out. did that and it snapped.
If the peg on the old gas cap retainer snaps off you can just pop in the new gas cap retainer. If the old piece is in the way, push it through with a screwdriver or something so the new peg fits in. You may be able to fish out the piece, but chances are the old piece will not be a problem once the new peg fits in place.
@@hayseedfarm thanks for replying man. My new gas cap didnt come with one. Will have to check online