# 2008 Nissan Altima accelerator “revs” **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** nissan, altima\ **Created:** [March 21, 2018, 6:15pm UTC](https://community.cartalk.com/t/2008-nissan-altima-accelerator-revs/114140 "2018-03-21T18:15:26Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![Beth23](https://avatars.discourse-cdn.com/v4/letter/b/839c29/32.png) [@Beth23](https://community.cartalk.com/u/Beth23)\ **Post date:** [March 21, 2018, 6:15pm UTC](https://community.cartalk.com/t/2008-nissan-altima-accelerator-revs/114140/1 "2018-03-21T18:15:26Z")
While driving around town (less than 45 mph) the accelerator will unexpectedly “rev up” and the driver will shift into Neutral until the RPMs recover. Since we cannot create this symptom “on demand” it is not diagnosed by mechanic. Any others experience this? ---
**Author:** ![jtsanders](https://avatars.discourse-cdn.com/v4/letter/j/c2a13f/32.png) [@jtsanders](https://community.cartalk.com/u/jtsanders)\ **Post date:** [March 21, 2018, 11:13pm UTC](https://community.cartalk.com/t/2008-nissan-altima-accelerator-revs/114140/2 "2018-03-21T23:13:22Z")
When you encounter this problem, are you driving along at a steady speed when the engine revs higher, or do the revs remain high after letting off the accelerator pedal? ---
**Author:** ![gobosox](https://avatars.discourse-cdn.com/v4/letter/g/a183cd/32.png) [@gobosox](https://community.cartalk.com/u/gobosox)\ **Post date:** [March 21, 2018, 11:15pm UTC](https://community.cartalk.com/t/2008-nissan-altima-accelerator-revs/114140/3 "2018-03-21T23:15:06Z")
It might be worth getting the transmission looked at by the dealer (maybe that’s the mechanic you refer to)? ---
**Author:** ![Beth23](https://avatars.discourse-cdn.com/v4/letter/b/839c29/32.png) [@Beth23](https://community.cartalk.com/u/Beth23)\ **Post date:** [March 22, 2018, 9:24pm UTC](https://community.cartalk.com/t/2008-nissan-altima-accelerator-revs/114140/4 "2018-03-22T21:24:31Z")
hi jtsanders, he says that the revs shoot up to 6000 and he feels he has to shift into neutral because the brake alone won’t bring it back down. ---
**Author:** ![Beth23](https://avatars.discourse-cdn.com/v4/letter/b/839c29/32.png) [@Beth23](https://community.cartalk.com/u/Beth23)\ **Post date:** [March 22, 2018, 9:25pm UTC](https://community.cartalk.com/t/2008-nissan-altima-accelerator-revs/114140/5 "2018-03-22T21:25:05Z")
Mechanic’s trying but they say “there’s a thousand things it could be”… ---
**Author:** ![shanonia](https://avatars.discourse-cdn.com/v4/letter/s/9de053/32.png) [@shanonia](https://community.cartalk.com/u/shanonia)\ **Post date:** [March 22, 2018, 10:00pm UTC](https://community.cartalk.com/t/2008-nissan-altima-accelerator-revs/114140/6 "2018-03-22T22:00:08Z")
Get to a much better mechanic! ---
**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\ **Post date:** [March 22, 2018, 10:10pm UTC](https://community.cartalk.com/t/2008-nissan-altima-accelerator-revs/114140/7 "2018-03-22T22:10:55Z")
The accelerator system on this Nissan is a drive-by-wire system This means there’s no accelerator cable between the gas pedal and the throttle body. Instead there’s an accelerator pedal position sensor. [https://www.rockauto.com/en/moreinfo.php?pk=6993396&cc=1440206&jsn=376&jsn=376](https://www.rockauto.com/en/moreinfo.php?pk=6993396&cc=1440206&jsn=376&jsn=376) This sensor sends a signal to the computer, and depending on the position of this sensor, the computer operates the electronic throttle body. [https://www.rockauto.com/en/moreinfo.php?pk=5428281&cc=1440206&jsn=396&jsn=396](https://www.rockauto.com/en/moreinfo.php?pk=5428281&cc=1440206&jsn=396&jsn=396) That’s the system I’d be looking at. Tester ---
**Author:** ![Demonis](https://avatars.discourse-cdn.com/v4/letter/d/6de8d8/32.png) [@Demonis](https://community.cartalk.com/u/Demonis)\ **Post date:** [March 23, 2018, 12:32am UTC](https://community.cartalk.com/t/2008-nissan-altima-accelerator-revs/114140/8 "2018-03-23T00:32:07Z")
Is it in gear/drive and the RPM’s increase? If no, do the RPM’s bounce up and down? If yes, does the car start to accelerate as the RPM’s increase?