3.4 Swap EVAP Emissions
Sep 24, 2025 | 10:34 AM
#1
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Joined: Sep 2019
Posts: 14
Likes: 2
From: Reno, NV
3.4 Swap EVAP Emissions
Hey everybody,
For a 97 3.4 into a 92 manual 4Runner,
I am so close to finishing this swap, the NV State emissions lab has to sign off that all the emissions monitors are active. However, the EVAP monitor WILL NOT MONITOR no matter how many times I perform whatever iteration of the drive cycle. I've looked up every single drive cycle in the 97, tried them all. I've driven this thing 600 miles straight. I've opened the gas cap every time I've started the vehicle. Nothing gets it to pass the EVAP cycle.
Is there a way to force the computer to run the cycle or something?
This is so freaking infuriating, why can't this thing just work.
For a 97 3.4 into a 92 manual 4Runner,
I am so close to finishing this swap, the NV State emissions lab has to sign off that all the emissions monitors are active. However, the EVAP monitor WILL NOT MONITOR no matter how many times I perform whatever iteration of the drive cycle. I've looked up every single drive cycle in the 97, tried them all. I've driven this thing 600 miles straight. I've opened the gas cap every time I've started the vehicle. Nothing gets it to pass the EVAP cycle.
Is there a way to force the computer to run the cycle or something?
This is so freaking infuriating, why can't this thing just work.
Sep 29, 2025 | 08:07 PM
#2
Thread Starter
Registered User
Joined: Sep 2019
Posts: 14
Likes: 2
From: Reno, NV
Aww man no one answered. But in case anyone else was curious, the TIS online has an updated technical service bulletin for all drive cycles relevant to all the 97-02 model series, and ORS has an updated diagram for vacuum hoses and vacuum canister locations. After running the drive cycle 4 times, I finally got the EVAP monitor to clear and my 4Runner passed emissions and is legally registered again.
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