My 2015 Nissan Sentra runs good in park and neutral put i...


My 2015 Nissan Sentra runs good in park and neutral put in gear and RPM gauge goes up and down and will not engage in Drive what could it be Mechanic's Assistant: How old is the transmission? Have you checked the [brake](/...

My 2015 Nissan Sentra runs good in park and neutral put in gear and RPM gauge goes up and down and will not engage in Drive what could it be Mechanic's Assistant: How old is the transmission? Have you checked the [brake](/topics-brake-nissan/) switch? The transmission is old as the car Mechanic's Assistant: Are you fixing your Sentra yourself? What have you tried so far? I haven't tried anything yet it just happened yesterday Lew's Speed on Highway Mechanic's Assistant: Anything else you want the Mechanic to know before I connect you? Just that it runs good revs up fine in park and neutral soon as I put it in reverse I don't feel it gauge in any gears and RP when I give it gas RPM gauge will go from 15 to 2 to 2,000 back and forth

Automotive Expert
Hello, My name is\*\*\*\*\*'ve been working on cars since 1990, I have been a Just Answer expert since 2008. Thank you for contacting us for assistance with your vehicle. I will be happy to assist you. You will see an option to receive a phone call prompted by the website, you can agree to or decline. If you do not wish to use the Phone Service, we can continue chatting this way back and forth until you are satisfied with my help. Just keep in mind, it does take me time to respond. I am a Automotive Technician, I am not a fast typer. So lets get started.... Can I ask to whom I have the pleasure of speaking with today?

Anthony
Automotive Expert
Hello Anthony, Nice to meet you! I am sorry to hear about the issue you are having with your Sentra. I will do my best to help you with this. Do you have a Check Engine light or any warning lights on when the engine is running?

No I don't have a warning light on engine light
Automotive Expert
Thank you. So if the Rpm's start to surge up and down as soon as you put it into gear, that may require an Idle Relearn. If you find that the vehicle will not accelerate properly, then you may have a Mass Air Flow sensor issue.

it could be an idol relay sensor or a air flow sensor issue you think
Automotive Expert
No such thing as a Idle Relay. It would be either a computer calibration issue, electronic throttle chamber or an Mass Air Flow Sensor. It should be properly checked in person to verify. When it comes to electrical parts, you want to stick with the dealer. Aftermarket electrical parts are known not to work properly

you think it's one of those because it runs great in neutral and park but when I put it in gear it doesn't rev up it stays between 1500 and 2000 RPM going up and down and I don't feel the transmission engage in any gear
Automotive Expert
If the transmission does not feel like it's engaging, then you could have a transmission issue. This would need to be determined by performing multiple tests. This is best checked by a transmission shop or dealer. That is of course if there is an engagement issue

I appreciate it I will take it in to have checked
Automotive Expert
You're welcome and thank you for using JustAnswer.com Be Safe! Kind Regards, Jay!

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