Question about 2003 Nissan Sentra

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I use nissan sentra 2002 my service engine soon is on for 2weeks

The mechanic says its the fuel pump. what do i do? i have changed the plugs. am ableto drive to work everyday

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  • karlos_2310 Mar 29, 2009

    i have a nissan sentra 2003 ser spec v, i recently sent my car to motor oil change, 4 hour later, the check engine light on and the car doesnt start half the time, its like it the sparkplugs was not correctly working, or something like this, so if you have an explication for me please, any answer will help me, i know that these model have sometimes problems with the catalyser so i dont want to take any risk... thank you

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Finding out what the code number is, is the first step.

You can find this easily by watching the blinking yellow check engine light and counting the number of flashes for each of the numbers in the 4 digit fault code.

To do this without a code reader; sit in the car and turn the ignition on (do not start the car) and after 3 seconds push the accelerator pedal all the way down to the floor and release fully (pull your floor mat out from under the gas pedal). After the 3 seconds, do this 5 times quickly, in less than 5 seconds. Then hold the accelerator pedal down for exactly 7 seconds and release it fully. Then within 10 seconds, the yellow check engine light will begin to blink.

The numbers of blinks will go from 1 to 10. A 10 will represent a "0".

For example; 0303 would be 1st number is 10 flashes, short pause then 3 flashes, short pause then 10 flashes, short pause and 3 flashes. It will repeat this again if there is only one fault code. There could be other fault codes and you would count those in the same way.

The 0303 code means that you have a cylinder misfire in the #3 cylinder. This could be a fouled plug, poor connection between the plug and the coil or something else.

To erase the code hold the gas pedal down while the yellow light is blinking for about 15 seconds then turn off the ingnition. Code will now be reset and light will go out.

If for some reason you do not get the yellow light to start blinking, tturn off the ignition and try it again. You may wish to get a watch with a second hand as the time is critical as to the seconds between steps.

After you find out what codes you have, send back an email and we can document the actual codes and the problems you are having.

Bob - 2003 Nissan Sentra SE-R spec V

Posted on Feb 22, 2009

  • Bob
    Bob Feb 23, 2009

    I made a mistake in the above description.



    The correct steps are:

    1 Turn on ignition (dash lights are on) and hold for 3 seconds

    2. In less than 5 seconds push the gas pedal all the way to the floor and let it up and do this 5 times.

    3. Release gas pedal and count off 7 seconds.

    4. Then push the gas pedal down and hold it until the check engine light starts to blink and then immediately let up on the gas pedal

    5. Count the number of flashes.



    I am sorry about the error.

    Bob - 2003 Nissan Sentra SE-R SPEC V



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Find out what the code is on check engine light. You can do this buy going to most autoparts stores or the dealership. Once ou have the code You can find out what the issue is. When the fuel pump is bad the car does not start. Also nissan fuel pumps rarely go bad.

Posted on Feb 17, 2009

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