Gtst Problems

[diggody]

Help i have pretty standard r32 gtst, it was auto and changed it to auto, and put a blitz pod filter on, otherwise standard.

THE PROBLEM:

it stalls when slowing down or stoping like at traffic lights or somtimes just gets a really low idile and you have to rev it to get it right again. and when you put your foot down you can feel kind of like hesistation slightly jerky when acclerating, but if accelerate slowly its ok.

WHAT I HAVE TRIED:

i had a bad coil so i got some new ones and they tips all look ok now. stil have 5 spares

got 6x new iridium spark plugs

Ran injector cleaner though it and a full tank of 98 gas

took the afm out and cleaned it with electrical contact cleaner.

im running out of ideas?

any other sensors, or boost leaks or somthing??

please give me some ideas

thanks!!!

[abulurd]

Check All your hoses on top, they go brittle and crack, may have broken hose that is being forced open under boost?... I had similar problem, wouldn't idle and kept stalling , wouldn't boost and then wouldn't even start ... was a cracked hose

[abulurd]

also ... why not change all the coils seem as though you bought 6 brand new ones ? seem pointless to change just 1

[2LV8ETR]

I had this issue, and for me it was the vacuum line to the fuel regulator had come off.

[R31Nismoid]

Well the plugs certainly weren't a good idea... waste of your money mate!

When you say it was an auto, and you changed it to auto... what do you mean?

I reckon as above, Vac line/hose is split or something similar.

[diggody]

sorry i mean i changed from auto to MANUAL, why werent plugs a good idea?

i did a ful service on it because i brought the car off an old guy that had owned it for the last 11 years, did cambelt, oil+filter,plugs, fuel filter, saw one of the coils was prety stuffed so changed it. i got the coils on a dollar reserve auction and scored the whole set for 2 buks. so they are 2nd hand but good but rest of mine look fine

I will check Vac line/hose is split today

[paulr33]

when did the problem occur?

has it ever worked (after the conversion)

tried resetting stock ecu?

[Lemzki]

have you tried taking out the AAC and giving it a clean

[webber]

does your fuel pump cut out? if it does, do the earthing mod, mine used to do it, then i earthed it out permanently (so it runs all the time) and never had the problem again. Skylines have a circuit that reduces voltage to the fuel pump to decrease fuel pump noise at low speed/idle and being the age of the vehicles this system fails, so just as easy to earth the pump so it runs all the time.

I am sure if you search it you will find an article.

Cheers

[89CAL]

+1 for resetting the ECU

mines a 33 but mine did the same sorta thing, cleaned afm, aac valve, tried heaps of stuff

then unplugged the battery, stamped on the brakes for a bit and gave her power again and all fixed

[Garage_Kaizen]

You can always have a play with the idle adjustment screw on your AAC..

Worked for mine..

[diggody]

cleaned the aac valve it was prety dirty and i thought it worked but then it started doing it. i have just screwed it back anti clockwise and got a higher idle now so il see how that goes. il also try resetting ecu and doing fuel pump mod. hopfully somthing works!!

thanks for all your suggestions guys

[Zedar32]

I had a similar problem - not quite the same, and my afm was just faulty - i had cleaned it etc and pretty much almost eliminated it as a probable cause then found a 2nd hand one swapped it over and didn't have any issues after that.

[FAT_3L]

wat do u clean on the actual air flow meter?? getting the air flow cleaner but dont wanna stuff anything. A DIY thingy would be good...

[diggody]

cleaning that valve and setting idle has worked it deosnt stall anymore.... BUT i stil have the jerky acceleration! foot flat not smooth at all kinda jerky and hesistant. what could this be? i cleaned afm but could it be faulty? any way to check?

[r32_det]

my gts-t is exactly the same mate!

i managed to fix the rough idle problem, but i still get a jerk under hard acceleration, or my car just feels like it loses power about low-mid boost.

would love to sort it out but i'm running out of ideas!

[Ultimategtr]

Boost leak mate.

It could also be the wrong plugs - ie too cold or too hot, or even misfiring.

Reset ecu and run diagnostic. that should set you in the right track for sure.

[diggody]

Hey im from chch too and we both got same problem if ya fix yours come fix mine

my gts-t is exactly the same mate!

i managed to fix the rough idle problem, but i still get a jerk under hard acceleration, or my car just feels like it loses power about low-mid boost.

would love to sort it out but i'm running out of ideas!