Jump to content
SAU Community

Recommended Posts

My car for some reasons has stalling problems after hitting boost when its warmed up.

It has stalled, then when I turned it back on stalls again, then on second time it starts but at times when I gave it some gas it splutters and then plays.

THis only happens when I rev it past 2000 RPM, I drove below 2000 rpm yesterday and didnt play up at all.

What could this problem be??

Link to comment
https://www.sau.com.au/forums/topic/123104-problems-after-boosting/
Share on other sites

how old are your plugs? what type and gap are they? does it only stall when you are decelerating? if so, there is a good chance its your plugs. mine would stall after giving it a bit of stick then slowed down. put new plugs in and went away.

very much doubt it is the bov. seen plenty of skylines with atmo bovs that run fine. most common problem with atmo bovs is people put them on then don't tension up the spring so they leak. and when they do run rich on gear changes it is only for a split second. they don't constantly run rich.

how old are your plugs? what type and gap are they? does it only stall when you are decelerating? if so, there is a good chance its your plugs. mine would stall after giving it a bit of stick then slowed down. put new plugs in and went away.

very much doubt it is the bov. seen plenty of skylines with atmo bovs that run fine. most common problem with atmo bovs is people put them on then don't tension up the spring so they leak. and when they do run rich on gear changes it is only for a split second. they don't constantly run rich.

stock car...

spark plugs have been changed ot new iridium NGK... coil packs r fine too. AFM is clean.

no idea...

i think it may something to do with the fuel system (fuel lines, fuel pump)... thought maybe u guys could chime in with something else...

getting same prob myself at times - seems ok and revs are stable (but higher than normal - idling at 1100rpm ish) but after accelerating and using boost - come to slow down and it can stall here n there.

only thing I can think of personally for mine is AFM on way out as other owners I know had similar trouble >_<

getting same prob myself at times - seems ok and revs are stable (but higher than normal - idling at 1100rpm ish) but after accelerating and using boost - come to slow down and it can stall here n there.

only thing I can think of personally for mine is AFM on way out as other owners I know had similar trouble >_<

well could be who knows... afm eletrics might be f**ked up.

could also be idle control valve. we did some 'tuning' on my car and the next day idle was all over the shop. first it would idle high, then it would stall, then it would hunt. ended up taking the idle control valve off and giving it a good clean. sorted it out for me.

I put money on faulty AFM.

A mates car did the same thing. Started then stalled after one or two seconds. I unplugged his AFM, then started it with a bit of throttle in there, and he limped it home. It would cut out over 2000rpm (exactly), but it made it. New AFM and it runs perfectly.

idle control valve is at the back of the motor on the drivers side. it sits at the end of the plenum at the top. it has 2 pipes coming out of it, 1 of them underneath it. it has 2 plugs on it. if you look at it from the drivers side you will see the idle srew (about 8mm in diameter and takes a flat blade screw driver... i think) it is 3 screws to get off, the 2 plugs and 2 hoses. the bottom hose is a bit of a pain to get on and off.

to clean it you need carby cleaner, and optional is some pipe cleaner. just give it a good spraying. i took the little motor bit off so i could clean it completely. then when you put it back on you may have to adjust your idle, unless you get your screw back in the same spot.

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

    • That's not a transistor --- it's marked ZD1 which makes it a zener diode. As to what the breakdown voltage is, not enough there to divine.
    • Hi all, Long time since I've posted here. Looking for some advice on what I can remove to further identify the cause of my issues.  I can move the passenger seat forward and back but the knob used to adjust the seat angle is pretty much free spinning, there's very little resistance.  Removing the side cover I can see that the chain is intact but the shaft for the adjustment spins without the gear attached to it moving.  What's my next step for disassembly here? Is this a common fault? Just being a little cautious as I didn't want to start removing bolts for a spring to fly out or something equally as stupid.  Cheers
    • The incentives are mostly the same, yes. Ethanol is cheap compared to the cost of doing 98-100 RON with crude oil alone. 87 to 93-94 AKI all with E10. In 2020 Canada mandated E10 as a part of their "renewable fuel standard" and is supposedly going to go to E15 in 2030. In California where there are only 8 refineries with two threatening to shut down next year it's been over 20 years now of E10 and 91 AKI maximum because there's just not enough refinery capacity or crude oil supply relative to the demand for premium unleaded fuel. And CARB's low carbon fuel standard means functionally none of the diesel available at the pump is made from crude oil anymore. It's almost all entirely 20% biodiesel blended with 80% renewable diesel (hydrotreated vegetable oil) now. The number of gasoline vehicles that support E15 or higher ethanol concentrations is surprisingly low, I can't imagine it being wise to play tricks like this without flex fuel sensors in most of the fleet.
    • It's almost certainly the same as the one next to it. Have a fish around amongst these hits https://www.google.com/search?q=surface+mount+transistor+m33&sca_esv=9cb49794e0b2005d&source=hp&ei=2vJ5aNjTB7Kw0PEPldnS8QM&iflsig=AOw8s4IAAAAAaHoA6qkfmF6XcygtrZ4Vu9f92NXF_RFd&ved=0ahUKEwjYqIPP7MWOAxUyGDQIHZWsND4Q4dUDCA8&uact=5&oq=surface+mount+transistor+m33&gs_lp=Egdnd3Mtd2l6IhxzdXJmYWNlIG1vdW50IHRyYW5zaXN0b3IgbTMzMgUQIRigATIFECEYoAEyBRAhGKABMgUQIRigAUjKCFAAWABwAHgAkAEAmAHfAaAB3wGqAQMyLTG4AQPIAQD4AQL4AQGYAgGgAuYBmAMAkgcDMi0xoAfMBLIHAzItMbgH5gHCBwMyLTHIBwU&sclient=gws-wiz
    • South Australia, which is hardly as far behind as the rest pf Oz makes out, and who is also not a paragon of progressiveness (read that as over-legislation) in the area of vehicle standards, has this to say on the subject: Adjustable coil-over suspension Aftermarket adjustable coil-over suspension components are suspension units that incorporate an external thread on the main body and corresponding threaded spring saddle that allows the vehicle's suspension height to be varied. If fitting aftermarket or coil-over suspension components you must submit an Application to modify a light motor vehicle form and a report from a light vehicle engineering signatory (LVES).
×
×
  • Create New...