# 02 Nissan sentra has trouble starting

**URL:** <https://community.cartalk.com/t/02-nissan-sentra-has-trouble-starting/85854>\
**Category:** Maintenance/Repairs\
**Created:** [July 7, 2014, 3:28am UTC](https://community.cartalk.com/t/02-nissan-sentra-has-trouble-starting/85854 "2014-07-07T03:28:09Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Bennyb98](https://avatars.discourse-cdn.com/v4/letter/b/9f8e36/32.png) [@Bennyb98](https://community.cartalk.com/u/Bennyb98)\
**Post date:** [July 7, 2014, 3:28am UTC](https://community.cartalk.com/t/02-nissan-sentra-has-trouble-starting/85854/1 "2014-07-07T03:28:09Z")

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Hello! I am having issues with my 02 Nissan Sentra turning over when I am starting the car. First for some background my car has almost exactly 115k miles on it. I have noticed the problem is getting slowly worse and worse. What happens is when I turn the key the engine makes a slow grrrr and rev sound, then a slighty faster grrr and rev, followed by a faster one before it finally turns over. There have been instances before when I have have to give it a good two or three times before it would turn over at all. I am not sure what is causing the problem. I do have one idea is that recently my gas mileage has been going down so I added Techron from the auto shop before 2 of my last 3 fillups (I didn’t on the last fill up since I was having the issues) Could that cause the problem? Other than that I am thinking maybe something with the battery (its a bit over 3 years old) or the spark plugs or fuel pump would be my best bet? ANy ideas?

I tried to take an audio recording of the issue but you have to really turn up the volume to hear the low lever grrr and revs before the car starts.

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**Author:** ![insightful](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/insightful/32/2732_2.png) [@insightful](https://community.cartalk.com/u/insightful)\
**Post date:** [July 7, 2014, 6:02am UTC](https://community.cartalk.com/t/02-nissan-sentra-has-trouble-starting/85854/2 "2014-07-07T06:02:08Z")

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“…when I turn the key the engine makes a slow grrrr and rev sound…”

Do you think this “rev sound” is the starter motor spinning? I don’t know what could be revving if the motor hasn’t started yet.

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**Author:** ![Yosemite](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/yosemite/32/643_2.png) [@Yosemite](https://community.cartalk.com/u/Yosemite)\
**Post date:** [July 7, 2014, 7:48am UTC](https://community.cartalk.com/t/02-nissan-sentra-has-trouble-starting/85854/3 "2014-07-07T07:48:08Z")

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How old is the battery.  
It sounds like you have a weak battery or a bad connection at the barrery , or the opposite end of the cables

Yosemite