Jump to content
SAU Community

Recommended Posts

Guys,

got a problem where my idle seems to increasing then decreasing, from 500rpm-700rpm. I checked if my std BOV was leaking, and yes it...however its still plumbed back into the system as std. Would this have anything to do with it? i have checked for any other vacuum leaks or intake leaks and there r none. i have cleaned the aac valve. and its fine. what else would it be? another thing that makes me thinks its the BOV, is because when i accelerate then back off straight away down to idle speed, it drops below idle then comes back up.

does the 02 sensor have anything to do with it? i seem to be getting average 12.2 litres per 100km, thats M5 driving, so 110-120km/hr.

ur help is appreciated!

Link to comment
https://www.sau.com.au/forums/topic/191870-varying-idle-what-would-it-be/
Share on other sites

i checked for leaks. there are non...i guess...LOL...with the timing? what should it be set at? i took my boost controller out so im running 9psi. STOCK LOL!!! so much slower...so what should i setr the timing at?

cheers,

yeah i have the exact same problem i think it is the BOV because i have one that vents to atmosphereand it sometimes stalls. As for the timing not sure? i would check the BOV and if u have a standard one lying around anywhere id like to buy it?regardsJIm

yeah im adding myself to the mystry idle club as well. It was varying anywhere between 500-1100, had the O2 sensor replaced and it was well for the first month but then it started playing up again. Can't be another dead O2 sensor can it?

i cleaned that! ages ago...took i off the other day. still clean as. so not that...i only replaced the afm bout 3 months ago. so thats cool....so im breaking it down to std BOV leaking....or the 02 sensor....or timing...

i know the std bov is leaking..but its plumbed back in..does that make a diff?

got the same problem... or though i went around and tightened all my FMIC clamps ect. and it ran alot better. as far as your bov goes i have an atmo bov and it ran like crap but after tightening the tension it ran alot better again, as far as O2 sensor ect. i run an aftermarket ecu and my sensor isnt even plugged in..., do you have an aftermarket ecu that controls air ect.?

ey nah i got factory ecu. umm...i went round and tightened all the BOV fittings an a few vacuum hoses. but i have yet to double check cooler pipings...but i reckon the car has become a bit laggier!! so might be the fmic hoses...got to check anyways.

cheers

I have the same problem too but when i installed a remap in my ecu, my car decided to stall when i come to a stop, at most time it does.

I've also got the stock bov on too.

I've upped the idle, but still stalls and varys.

Need help

Cheers

Hey guys, I had the same problem. Something to try if you're having idle issues, get long nose pliers and block off the hose the that goes into first air control valve located underneath the intake manifold, It's the device with two hoses coming off it running up to the aac valve, after this is blocked off you can adjust the idle screw on the aac valve until the idle is stable.

i took my aac off and gave it a clean just like the link but it didnt help me... same problem. i rang a place and they told me to get a new aac... good luck if i can get one. but then again could be somethin else. i noticed tackin the brown plug off (rb25) it had a steady idle but dunno if it would do anything in the long run.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • This is a story of my life things, I learned eventually (thanks to someone calling me out) that my enthusiasm for discussing and sharing ideas that it came across as arrogance and I'm like... WTF?!    One thing I'm pretty sure I justifiably pride myself on is knowing that everyone will have things they can teach you, and you're always going to find out that something you think you know turns out wrong - you just don't know what it is until you get there.   Just the bursting enthusiasm that comes with ADHD when you hit something that gives you dopamine dumps can come across like you think everyone else is wrong or don't matter. But yeah, I'm a software engineer by trade and also do tuning in weekends and 100% have long had a reputation for  quickly making connections when resolving problems or forming solutions that I've sometimes had to take people form a long walk from start to end to explain how I ended up where I did when it's seemed "too simple" when I've stated my initial case, and had the "WTF" type reaction when they've realised how much was actually considered haha.   My reward is that I get all the curly problems thrown at me.
    • Wives never seem to find things funny. Especially when they're trying to sleep, and you've found the new funniest thing ever. I've never seen someone be able to get try and be cranky with me, while they're holding back fits of laughter... 馃槢   Also, I tell mine it's payback anyway. She has BiPolar. So the household can get quite emotionally wild at times 馃槢
    • I'm not up to date on the latest, but for basic modifications like pod filter, lower springs etc you can get a modification permit at the time of inspection.  For more serious modifications you will need engineering.  Intercoolers used to fall into the mod permit rule but its been a long while since i looked it up.   Either way you will be able to get it registered, just a case of $300 vs $3k . 
    • Hi everyone! I鈥檓 the new owner of a 1996 R33 GTS-T, I鈥檝e purchased this car over from Queensland and brought it to Western Australia and I鈥檝e found that there is a hole cut out in the engine bay for the FMIC that enters into the wheel well (fender liners are in the boot). For anyone that has had to get their car over the PITS here, will this be a major issue?   
    • Yeah I've spotted this one too, whenever it's lotto superdraw week and I'm browsing car sales dot com for my new ride They must be dreaming, maybe it's worth 150k for the link to Brock?
  • Create New...