How to fix rough idling on a 2008 nissan frontier

SOURCE: I have a 2008 Nissan

P2135 and P2138 relate to the rationality of the redundant throttle position sensors or the accelerator pedal position sensors. If the relative voltages of the sensors do not match throughout the range of movement, a code will set. This will generally keep throttle control below 1800 rpm. You want to keep the dealer out of this issue, however unfortunately, the dealer has more advanced diagnostics that can pinpoint which sensor is causing the code set. Some, more progressive, repair shops also have better diagnostics than say the standard OBD II, which will not throughly diagnose. You will need to determine which of these sensors is casuhing the code set in order to effect repair. Good Luck! I hope you find this to be very helpful!

Testimonial: "Thanks for your help. Could i just change the sensors myself & where would the sensors be located? "

SOURCE: rough idling lack of power

Try replacing the fuel filter.
Check for a vaccum leak

SOURCE: 1999 nissan frontier is idling rough the truck

This can be your Idle control valve, when you turn the air on it puts the engine under load and your computer will increase the idle automatically to prevent the engine from cutting out.
When you are standing still and the car is shaking, by touching the accelerator very softly does the shaking stop? If so check the idle control valve.
I hope this will help.
Regards
Sam

SOURCE: how many odometer digits does a 2008 nissan

6. All vehicles nowadays have 6, some will have a 7th, but the 7th one indicates a fraction of a mile/kilometer.

SOURCE: My nissan frontier runs fine until I turn on the

if it runs rough only at idle with the AC on then it osunds like a the idle solenoid that causes the vehicle to idle up when the ac is on. if its during the entire RPM range then you might want to check your alternator or battery, perhaps one of them isn't supplying enough power to run the engine, lights and A/C