Hesitation My Nissan Sentra is a 2003 automatic with a 1.8 engine. While driving it will occassionally start jerking and just as quickly as it comes on it quits and goes back to running smooth. I have taken to a mechanic and the car acted fine all day. The mechanic put my car on the computer and there were no error codes or history codes. Is the fuel pump starting to go?

SOURCE: 2000 nissan quest

There is a sensor in the distributor that tends to cause this problem. The sensor is the called the camshaft position sensor and it is responsible for the ignition timing. If you have a timing light you can verify that the sensor is faulty by checking the timing while the engine is acting up. If the sensor is faulty, the timing will be erratic or just plain wrong. In many cases cleaning the sensor will correct the problem.

To clean the camshaft position sensor: Remove the distributor cap and rotor. This will give access to a metal plate that covers the sensor. Remove the screws the secure the plate and remove the plate. Inside there should be an optical sensor that you can clean using a spray type "Sensor Safe Air-Intake Cleaner". Eye protection is recommended when doing this.

Unfortunately, cleaning the sensor does not always fix the problem. In that case, the fix is to replace the distributor. Since the distributor is quite expensive and the problem could be something else, it is recommended that you use a timing light to check the ignition timing for any problems to confirm that the problem is the camshaft position sensor.

SOURCE: Nissan Sentra jerks in 3rd and 4th

the engine light IS on. I will definately check out the fluid in the trans. How much on average does a trans flush cost? Thank you very much for your help. I am currently riding my bike as much as possible till I find a solution, plus gas prices haha.

SOURCE: 2004 nissan sentra starts the stops. acts like

check your ecm connection

SOURCE: Car stutters at startup

My car did the same thing and I went and had it checked out. They had to replace my mass air flow censor. Cost me a little over $200. The only thing is after I had it fixed, my check engine light kept coming on. They said that my fuel line was running rich because I had ran my car so long with that problem. May want to get that checked out!

SOURCE: 1998 nissan sentra lost pick up speed and is jerking

first remove your map sensor and clean it with carburetor cleaner let it soak for a few hours and then reinstall it sometimes they get dirt or carbon build up and the pcm cant tell how much fuel to send