R33 Idle Problem Need Some Help!

[avalanche]

Hi I have a R33 gtst. My car no matter if its hot or cold will not idle. This is what it does car starts easy, revs to 1900 rpm,drops to 1500, pause, then to 1000 for a sec then dies. Stalls all the time. Runs perfect above 1500 rpm.

I have a HKS Sq BOV.

I have tried so far:

Cleaning Acc valve and all that muck out of the back of the plenum

Repacing fuel filter

setting the TPS

Turning Idle screw in and out with the TPS disconected ( For some reson the IDle does not change 1 bit weather i turn it in or out)

Cleaning out the AFM

Located where the Ecu idle screw should be, to find the isnt 1 on it

checked for leaks

what have i missed? Can someone help me out please!

[DRD-00F]

1. Go back to your stock bov

2. Get a plumb back bov

3. Get a tune

your atmo bov will be releasing a lot of air into the atmosphere, yet your air flow comp will read it as being in the system, so the fuel will be added as if there is that amount of air in there... but its not... any of the 3 will fix this problem... normally an atmo bov wont cause it to completely die at idle, it does create idling and gear changing problems, but not normall this bad... which is why i said get a tune..

anyway, hope one of those fixes it for you

[avalanche]

the bov i have i think is a plub bak though ( is that where a vacuum line sucks the valve open cuse its one of those) I dunno.

u know any tuning garages on the sunny coast?

thanks

[Onthehunt]

  avalanche said:

the bov i have i think is a plub bak though ( is that where a vacuum line sucks the valve open cuse its one of those) I dunno.

u know any tuning garages on the sunny coast?

thanks

a hks ssqv bov is atmo unless you have the recirc kit. is the plumback line blocked off?

[avalanche]

heres a pic its not blocked off. what else could be the problem??

[RipNGrip]

Does it rev freely? misfire? sound like a rexy?

[avalanche]

Na the car runs fine, good engine responds, no misfires, smooth running above 1500 rpm only it dies if i dont tap the accelerator every few secs.

[Master_bo_bo]

Had the same problem...was running a HKS bov..and the car wont idle properly..only to find theres a slight vacuum leak from the HKS BOV as its a Atmo BOV..i put the stock BOV back and plumb it back into my intake pipe..problem gone..like wat DRD OFF said..the afm is gettin weird reading cos of the atmo BOV..

[DRD-00F]

  Master_bo_bo said:

Had the same problem...was running a HKS bov..and the car wont idle properly..only to find theres a slight vacuum leak from the HKS BOV as its a Atmo BOV..i put the stock BOV back and plumb it back into my intake pipe..problem gone..like wat DRD OFF said..the afm is gettin weird reading cos of the atmo BOV..

man what the hell is drd off?

as for the original poster, you might want to save up some money and get a tune, you will notice that your car will run a shit load better... most well tuned skylines with atmo bovs wont actually stall, but if yours is, its a bit under the weather and could use a check up

i think you will like the change

[avalanche]

Deal better start saving

thanks peoples

[jumboy]

hey guys mines doing the same thing but i'm running a plumbback BOV.. some1 said u can't tune a standard ECU and car setup.. plz help i've done everything i can think off and the problems still there..

[DRD-00F]

You sorta can and you sorta can't. Do some research on Nistune.

Are you running an after market plumb back BOV? What else is installed?

[Craved]

please try an alternate stock ECU

my old ECU was fried and i drove a car like this for 6 months lol - not fun looking like a tool revving your car at every set of lights.

swap it out and see if you know someone with an stock ECU'd r33

[LeCoq]

man whats the deal with bov's?? its just makes good sound but never good for ur engine!

[R33 pearl orange]

hi guys

May not be the problem but i found info in regards to small cracks/holes in the little vacuum line on the turbo

Also my car played up bad one day turned out the boost/vacuum line to my gauge was leaking a little causing same problems as listed above

I would go round the engine bay with a can of carby clean or start ya basterd and see if there is any leaks else were i know you said you checked for leaks but it dose'nt take much to create a problem

happy leak hunting

[BH_SLO32]

  avalanche said:

Hi I have a R33 gtst. My car no matter if its hot or cold will not idle. This is what it does car starts easy, revs to 1900 rpm,drops to 1500, pause, then to 1000 for a sec then dies. Stalls all the time. Runs perfect above 1500 rpm.

I have a HKS Sq BOV.

I have tried so far:

Cleaning Acc valve and all that muck out of the back of the plenum

Repacing fuel filter

setting the TPS

Turning Idle screw in and out with the TPS disconected ( For some reson the IDle does not change 1 bit weather i turn it in or out)

Cleaning out the AFM

Located where the Ecu idle screw should be, to find the isnt 1 on it

checked for leaks

what have i missed? Can someone help me out please!

Make sure your fuel pump dropping resistor is plugged in. If any work has been done on the aerial recently it is possible the resistor plug has been unplugged. It is located in the passenger side rear cavity behind the wheel arch (where the jack is located). It is a rectangular silver item with a 2 pin plug.

Cheers

Ben

[jumboy]

  DRD-00F said:

You sorta can and you sorta can't. Do some research on Nistune.

Are you running an after market plumb back BOV? What else is installed?

i've also got a hdi GT spec hybrid intercooler, aftermarket coilpacks, a boost controller (only running 10 pound) and a HKS cat back exaughst system.. apart from that i'm stock.. i've checked for leaky hoses and i've tried a different ECU and i've replaced my air flow sensor..