Jumping Revs

[dyken]

lately when ive been slowing down and stopping at a stand still my revs will jump from about 500-1000??? my mate thinks it may be a vacuum leak and we had a look to see if we could find a problem but nothing a more thorough check will be done soon. any ideas on what it could be??

[dyken]

any1 any ideas?????

[Rancher]

Its a Skyline/RB problem. Its the AAC valve (On the side closest to the firewall) Pull it off carefully and more then likely it will be full of oil and gunk.

Clean it all out, if it still doing it the valve might need replacing. If its not all of that, then I have no idea. But more then likely it will be the AAC valve.

[Sinturion]

Air con off? My air con used to mess with my revs a bit until i stripped it out.

Might be a dirty or possibly even damaged afm. Try giving it a clean - plenty of threads about afms on here.

[dyken]

ill check the aac valve rancher its realli shitting me now my car stalled this morning because of it first time thats happened and Sinturion i hardly use my ac only wen its real hot or i need to demist the windows

[dyken]

ill check the aac valve rancher its realli shitting me now my car stalled this morning because of it first time thats happened and Sinturion i hardly use my ac only wen its real hot or i need to demist the windows and the afm i checked yesterday with my mate was clean as a whistle

[MANWHORE]

definitely give the aac valve a check.

You'll be suprised. It's most likely packed with carbon and crap.

A simply clean out with carby cleaner will make it feel like it's brand new.

That'd be my first point of call. After that, i'd check other things like afm etc.

[Rancher]

Check this link out for your AAC Valve, http://www.skylinesaustralia.com/forums/in...howtopic=110431

[dyken]

thanks for that rancher ill definatly do that this weekend

[antonirabic]

hey i had the exact same problem but everything under the hood was fine, the problem actually was the fuel...... the fuel i had in my tank had small traces of water in it and it was going through my engine but we then drained it (didnt have much left) and cleaned it all out and havnt had the problem since

i drive a r33 gts 95 series I

[unarmed_skyline]

mine did the same thing ages ago when i ran that 100 octance shell stuff i think the ethonal played funny buggers with the ecu

[R334door(s2)]

mine did the same thing ages ago when i ran that 100 octance shell stuff i think the ethonal played funny buggers with the ecu

Change ur o2 sensor

[unarmed_skyline]

i had no probs with the car after the next fill up, it was like a year ago now.

[mjscar]

Its definately the AAC valve. When I just bought my car, I had the same problem of rev hunting. Also if I press the clutch and turned the wheel even a little bit, my car would die because of the rev hunting. I was thinking I had bought a dud but after I cleaned the AAC valve, she's as smooth as can be. Definately worth doing even if your car isn't rev hunting and stalling..... yet.

[cjpwrx]

hey guyz i got the same problem as ur all having where can i take my car to get them to look at the ACC

thanks

chris

[Baconer]

hey guyz i got the same problem as ur all having where can i take my car to get them to look at the ACC

thanks

chris

I'd say do it yourself and spend the money on something else. All you need to do is take it off, pull the 4 or 5 pieces apart and clean them with carby cleaner. Not difficult to do at all, just follow the directions in the tutorial posted on the site and you should be fine.