# Weird idle/neutral thing **URL:** \ **Category:** SON240sx Automotive\ **Created:** [September 17, 2008, 8:05pm UTC](https://forums.speedlife.net/t/weird-idle-neutral-thing/118570 "2008-09-17T20:05:45Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![jpod89](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jpod89/32/5688_2.png) [@jpod89](https://forums.speedlife.net/u/jpod89)\ **Post date:** [September 17, 2008, 8:05pm UTC](https://forums.speedlife.net/t/weird-idle-neutral-thing/118570/1 "2008-09-17T20:05:45Z")
K I want to do this quick cause I hate explaining things when i kick the clutch in or put it in neutral it drops way down to 4/500 rpm and then moderately starts going to 1.3/1.5k rpm and sitting there, as the idle. wth? im sitting there idling like a moron at 1.5k. this comes after an alternator replacement/fuel line rupture repair. didnt touch anything to do with the timing or anything and fuel IS NOT leaking. if this is vague, ask questions i’ll be glad to answer… what is this? ---
**Author:** ![Jowo72](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jowo72/32/5560_2.png) [@Jowo72](https://forums.speedlife.net/u/Jowo72)\ **Post date:** [September 17, 2008, 8:31pm UTC](https://forums.speedlife.net/t/weird-idle-neutral-thing/118570/2 "2008-09-17T20:31:08Z")
do you have a vaccumm leak? ---
**Author:** ![jpod89](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jpod89/32/5688_2.png) [@jpod89](https://forums.speedlife.net/u/jpod89)\ **Post date:** [September 17, 2008, 9:13pm UTC](https://forums.speedlife.net/t/weird-idle-neutral-thing/118570/3 "2008-09-17T21:13:36Z")
dont think so, nothing is punctured, all air lines are nice and tight ---
**Author:** ![iz0](https://avatars.discourse-cdn.com/v4/letter/i/8e7dd6/32.png) [@iz0](https://forums.speedlife.net/u/iz0)\ **Post date:** [September 17, 2008, 9:25pm UTC](https://forums.speedlife.net/t/weird-idle-neutral-thing/118570/4 "2008-09-17T21:25:04Z")
i have the same gay problem… but i got no answer either… :S ---
**Author:** ![rex\_thugs](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/rex_thugs/32/5598_2.png) [@rex\_thugs](https://forums.speedlife.net/u/rex_thugs)\ **Post date:** [September 17, 2008, 10:09pm UTC](https://forums.speedlife.net/t/weird-idle-neutral-thing/118570/5 "2008-09-17T22:09:05Z")
check your throttle body maybe its sticking. ---
**Author:** ![jpod89](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jpod89/32/5688_2.png) [@jpod89](https://forums.speedlife.net/u/jpod89)\ **Post date:** [September 17, 2008, 10:17pm UTC](https://forums.speedlife.net/t/weird-idle-neutral-thing/118570/6 "2008-09-17T22:17:00Z")
> [@HUGE :tdown: to Frontier Auto Glass](https://forums.speedlife.net/t/huge-tdown-to-frontier-auto-glass/18405/2): > > check your throttle body maybe its sticking. Very possible. Would this also explain the weird dips to 4/500 rpm in neutral? ---
**Author:** ![sidewayz240](https://avatars.discourse-cdn.com/v4/letter/s/e99b99/32.png) [@sidewayz240](https://forums.speedlife.net/u/sidewayz240)\ **Post date:** [September 17, 2008, 10:53pm UTC](https://forums.speedlife.net/t/weird-idle-neutral-thing/118570/7 "2008-09-17T22:53:56Z")
Clean out your IACV (secondary butterfly’s), thats most likely causing it. get a bottle of combustion camber/carb cleaner and empty most of the bottle into the intake mani from the vacuum hose that connects to you intake piping. Wait directed amount of time (15-20 mins) then start up the car and keep the revvs up so it dosnt die and watch 'er smoke. You may need to do this a couple times to clean it out good. ---
**Author:** ![jpod89](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jpod89/32/5688_2.png) [@jpod89](https://forums.speedlife.net/u/jpod89)\ **Post date:** [September 17, 2008, 11:04pm UTC](https://forums.speedlife.net/t/weird-idle-neutral-thing/118570/8 "2008-09-17T23:04:06Z")
ill give it a shot and keep you informed, thanks for all the help ---
**Author:** ![iz0](https://avatars.discourse-cdn.com/v4/letter/i/8e7dd6/32.png) [@iz0](https://forums.speedlife.net/u/iz0)\ **Post date:** [September 19, 2008, 10:05pm UTC](https://forums.speedlife.net/t/weird-idle-neutral-thing/118570/9 "2008-09-19T22:05:05Z")
hey trev i have the same problem u think u can help me clean out the IACV when u available? > [@Biggest Sport Compact Race/Event in CND History -Oct 7 -TMP](https://forums.speedlife.net/t/biggest-sport-compact-race-event-in-cnd-history-oct-7-tmp/17744/14): > > Clean out your IACV (secondary butterfly’s), thats most likely causing it. get a bottle of combustion camber/carb cleaner and empty most of the bottle into the intake mani from the vacuum hose that connects to you intake piping. Wait directed amount of time (15-20 mins) then start up the car and keep the revvs up so it dosnt die and watch 'er smoke. You may need to do this a couple times to clean it out good. ---
**Author:** ![jpod89](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jpod89/32/5688_2.png) [@jpod89](https://forums.speedlife.net/u/jpod89)\ **Post date:** [September 20, 2008, 11:52am UTC](https://forums.speedlife.net/t/weird-idle-neutral-thing/118570/10 "2008-09-20T11:52:22Z")
seems to have fixed itself, then started doing it again.doesnt dip extremely low in neutral anymore though, weird! ---
**Author:** ![Clutchfire](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/clutchfire/32/5654_2.png) [@Clutchfire](https://forums.speedlife.net/u/Clutchfire)\ **Post date:** [September 21, 2008, 7:48am UTC](https://forums.speedlife.net/t/weird-idle-neutral-thing/118570/11 "2008-09-21T07:48:35Z")
My KADE dose the same thing I was told it was a bad ground so I regrounded the car and that did nothing. as for the carbon cleaner don’t use it. the guys at NISSAN said you can’t use any cleaners on the 240’s because of the injectors and some of the seals. Believe me I was going to do the same. Shit I can’t even use injector cleaner unless i use half a bottle for a full tank. Sorry I don’t have an answer for you.