R33 Stalling Issues

[r33cruiser]

hi guys i have recently been having some stalling issues with my r33. it has t4 turbo, 720cc injectors, nitrided crank, and ssq vta bov, and 3inch exhaust, fmic.

after about 20min to 1hr of driving my air fuel guage fails to register, it only blips back to normal once and a while. if i take too long to change gears, or come to a quick stop, the dash lights come on, and the revs drop, almost stalling.

i will get it serviced and tuned in the coming weeks. i am also investing an an apexi safc, hopefully these things will help.

any advice would be helpfull.

[paulr33]

have u got a remap? cos stock ecu + 720cc injectors wont work to tell

has it always been stalling? when did the problem start? who did the last tune/remap?

have u tried ecu reset?

[r33cruiser]

have u got a remap? cos stock ecu + 720cc injectors wont work to tell

has it always been stalling? when did the problem start? who did the last tune/remap?

have u tried ecu reset?

yeah, mate, i bought the car with most of the mods done, with a mines ecu chip, or so he said. it has all been running sweet till about 2months ago (had it for 7months). the last tune was 6months ago (edit-previous owner ) at supertune on the gold coast. there appears to be no mechanical issues like corroded pipes and stuff. i am just hoping it needs a re-tune. but i would like to know everyones opinion, maybe someone has had this problem.

Edited July 23, 2007 by r33cruiser

[xRHETTx]

Take the bov off and replace it with a stock one, then see if the problem is fixed.

Take the AFR guage out and throw it in the bin. what do you mean it fails to register? no power, no signal?

[Hardman69]

Likely a dead O2 sensor. borrow one & see what happens. My O2 died recently - Idle hunts up & down all over the place once it's warmed up, and I'm assuming goes into closed-loop mixture control.

[Public Enemy]

+1 for O2 sensor.

my gtr has a problem were both O2 sensors are reading 0.00. Car stalls and runs like crap. think mine has a problem in the wiring harness somewhere as both senors go down at the same time and it comes and goes.

[mad082]

if the o2 sensor is dead then that will cause it not to register on the guage.

[r33cruiser]

if the o2 sensor is dead then that will cause it not to register on the guage.

thanks for all your replies, this still happens with the stock bov. and by not rregistering on the a'f ratio gauge, once this happens, the gauge doesnt light up any more.

i will borrow a mates o2 sensor and test the theory, thanks for all of your replies.

[sunnycoast]

I had to remove my post because i had nothing nice to say to you.....

Sunny Coast.

Edited July 23, 2007 by SunnyCoast

[r33cruiser]

thanks for your input.

the bov is a genuine item, it is impossible for boost to leek, as it is a push-pull piston setup.

Edited July 23, 2007 by r33cruiser