Not sure if your problem is my problem but here goes, The mass air sensor on my car that reads the air intake must have a loose wire (behind electrical tape), when pushing on it i can get the var to run really rough if in the wrong position (disconnected?) If i play around with it, I can get it to run normal, but if in the wrong position it vibrates, runs at about 400 rpm and is really weak, (sounds like its running on less cylinders) to boot, hope this helps you in your problem.
Nissan almera pedal sticking
Accelerator pedal sensor error
Yes. Most accelerator cable can fit as long as the lengths the same. You may need to adjust it by clipping the end
The 2005 Nissan Quest OBD 2 port is under driver side dash above accelerator pedal
It's right beside the accelerator pedal.Just unscrew the panel and voila!
Maintains set speed for cruising without having to step on accelerator.
Check your rear wheel bearings.
It is located behind the center console near the accelerator pedal and is held by 2 screws.
the accelerator pump is the left side of the carberator or passenger side of the truck you see the link from the throttle cable hooked to it ,it has plunger shaped rubber on it an can be taken out by the two philps screws in about 10 minutes
check for vaccum leaks.
The ECM (Engine Control Module) is located under the dash panel, in front of the center console, and to the right of the accelerator pedal.
If you have a manual transmission the stop button on the clutch switch may have broken apart, replace the stop button to fix the cruise control. You can get one at any Nissan Dealership.