things to do. per FSM too.
1: the fuel gauge ,must work, if it lies and show 1/2 empty when full he p01410 test fails (i needs air on top of tank to work correctly
2: full inspection of hoses. evap end to end, for damage or cracks or prior collision or road hazazd damage under car.
3: make sure no damage to wires on the fuel tank pressure sensor circuit. (this is how the evap is tested, using tank fume pressure.
4: fsm page.... I just did this on my jeep and it passes this test.(lips)
Disconnect the EVAP tank pressure control solenoid vacuum valve vacuum hoses from the intake manifold and from the vacuum pipe.
Blow air into the EVAP tank pressure control solenoid vacuum valve vacuum hose that was disconnected from the vacuum pipe. Air should not pass through the EVAP tank pressure control solenoid vacuum valve and exit from the intake manifold hose.
![[Image: 542_99evap.jpeg]](https://fixkick.com/forum/gallery/542_99evap.jpeg)
The PCM reads the tank fuel fumes (air) pressure, while moving ,hot engine, cruise, closed loop engine, (no other DTC stored or live)
the #9 above (and my jeep) I removed mine and blew and sucked both ends and it did not leak.
ok found you the full dawning of your g16 99 evap.
![[Image: 541_99evapall.jpeg]](https://fixkick.com/forum/gallery/541_99evapall.jpeg)
the EVAP canister vent valve #9 is usually open but is closed by the PCM when checking for any leakage. (so must not leak air, when closed) testing is easy for just that.
1: the fuel gauge ,must work, if it lies and show 1/2 empty when full he p01410 test fails (i needs air on top of tank to work correctly
2: full inspection of hoses. evap end to end, for damage or cracks or prior collision or road hazazd damage under car.
3: make sure no damage to wires on the fuel tank pressure sensor circuit. (this is how the evap is tested, using tank fume pressure.
4: fsm page.... I just did this on my jeep and it passes this test.(lips)
Disconnect the EVAP tank pressure control solenoid vacuum valve vacuum hoses from the intake manifold and from the vacuum pipe.
Blow air into the EVAP tank pressure control solenoid vacuum valve vacuum hose that was disconnected from the vacuum pipe. Air should not pass through the EVAP tank pressure control solenoid vacuum valve and exit from the intake manifold hose.
The PCM reads the tank fuel fumes (air) pressure, while moving ,hot engine, cruise, closed loop engine, (no other DTC stored or live)
the #9 above (and my jeep) I removed mine and blew and sucked both ends and it did not leak.
ok found you the full dawning of your g16 99 evap.
the EVAP canister vent valve #9 is usually open but is closed by the PCM when checking for any leakage. (so must not leak air, when closed) testing is easy for just that.
http://www.fixkick.com