On a charcoal cannister EVAP system is the cannister supposed to be open to ambient atmospheric pressure? I am wondering because the cannister has two rubber caps at the top that seem to be channeled to prevent sealing? Of course all the vacuum lines are sealed.
I think my car kia cerato automatic have the same problem but no light engine is on.rpm drop down when in downhill and breaking.then come back with a jerk.
Nissan 350z hr , so i only have code p1705 throttle position sensor So would replacing this one part solve the issue? No check engine light illuminates , sometimes rough idle , can drive about 30 sec then sudden power loss and accelerator doesn't end up working/limp mode i guess