Gear Problems

2003 NISSAN SUNNY
95,000 MILES • 4 CYL • FWD • AUTOMATIC
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DHEERAJ11
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Hi, I have a Nissan Sunny, 2003 model, Gulf Specifications. It has run for around 95000 kms, and around a month back a problem with the gear arose. It is a Automatic gear and when I drive the car, it gets stuck on the first gear i.e. The gear does not shift to the second gear. It does not occur every time but it does take place once a while. I usually resolve it by either halting the car and starting the ignition again or it shifts after a while after decelerating and again accelerating.
I consulted a few garage's and some say to change the gear oil while some say there is a sensor problem.
Could anyone please advice me on this situation as it would be of great help.
Thank You!
Mar 8, 2011 at 10:59 PM
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RASMATAZ
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Check and test the throttle position and vehicle speed sensor. Also there are shaft speed sensors that sounds like have gone bad as well. We should start by checking the codes here is a guide to help us get started.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Mar 8, 2011 at 11:34 PM
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DHEERAJ11
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Thanks a lot for the early reply.
Do you have any clue how much would the testing and replacement cost?
Thank You once again!
Mar 9, 2011 at 8:08 AM
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USMANRAJA
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Salam dear
I have the same problem with my car nissan sunny 2002 :(
Have u found any solution for this problem??
Jun 8, 2014 at 8:07 AM
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SAMEERCH
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Dears
I too have the same problem. Have you found any solution
Feb 2, 2018 at 12:40 AM
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DHEERAJ11
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I figured out by scanning the car that the input shaft speed sensor went out once I replaced it everything works great.
Feb 4, 2018 at 12:54 PM
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SAMEERCH
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thank you dheeraj for your reply. When i enquired in the spare parts shops about the shaft speed sensor they don't understand. Can you share me a picture or any other details.
Mar 19, 2018 at 7:27 AM
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STRAILER
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Hello,

Yes the revolution and turbine speed sensors can cause all kinds of problems here are their location.

Check out the diagrams (Below)

Please let us know what happens.

Cheers, Ken
Images (Click to enlarge)
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Mar 19, 2018 at 11:04 AM
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SAMEERCH
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thank you ken for the help. but which is the one mentioned by dheeraj
Mar 20, 2018 at 4:26 AM
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STRAILER
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It should be the turbine speed sensor.

Let me know what happens
Mar 20, 2018 at 4:25 PM
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SAMEERCH
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I went to the nissan main spare parts shop here in qatar. They have only one revolution sensor with them which cost around 190 dollar(684 qatar riyal) and they are not sure it is input or output sensor
Mar 22, 2018 at 12:31 AM
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STRAILER
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If you have a scanner that can read the sensor values you can read real time data to see if they are working.
Mar 22, 2018 at 10:18 AM
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SAMEERCH
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I went to carmax here in qatar for computer scanning. They couldn't find any fault code. They said the problem might be with the gear box
Mar 30, 2018 at 4:11 AM
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SAMEERCH
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Is that sensor also known as camshaft sensor?
Mar 30, 2018 at 5:25 AM
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STRAILER
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No the turbine sensor is down on the transmission. Here is a video of one being replaced.

https://youtu.be/f3bETtCIdxM

let me know what happens.
Mar 30, 2018 at 10:40 AM