rough idle when warm

[ali-d1936]

weird one car starts up is grand after 10minuites when its warmed up it starts to idle rough sounds like a boxter engine lol. its not a full misfire. i unpluged the coilpacks one by one cant say one cylinder changed majorly compared to the rest. i cleaned the earths, checked all the boost piping and everything secure... im stumped...

[Noel]

Did you unplug air flow meter

[gary g]

When its warm try disconnecting lambda sensor, could be wanked

[ali-d1936]

well unpluged the afm and the car bearly stayed running so id say thats sound unplugged the lambada and it runs a bit better alright. shoukd the car not get worse? so im guessing thats wanked. where can i get a neqw one?

also my boost gague... i only noticed it used to be around 0 on idle now its reading -6 on idle and uner accelerating it struggles to reach 0 on the gague... boost/vaccum leak ?

[gary g]

well unpluged the afm and the car bearly stayed running so id say thats sound unplugged the lambada and it runs a bit better alright. shoukd the car not get worse? so im guessing thats wanked. where can i get a neqw one?

also my boost gague... i only noticed it used to be around 0 on idle now its reading -6 on idle and uner accelerating it struggles to reach 0 on the gague... boost/vaccum leak ?

Boost gauge should read in the (-) when idle then climb up to watever boost you have turbo set for when drivin, check for boost leaks, stick a thread up for a lambda sensor there im sure someone has one.

Also pull your spark plugs for a look and see what there like, and if know anyone that has an s15 swap the ignitor chips and see if it helps.

[gary g]

Id suggest it could be fuel pump too so itd be an excuse to get a walbro anyway if ya dont have one.

[ali-d1936]

cherrs man got new plugs 3 months ago got a quote for a lambada sensor off nissan i nearly fell over with the price lol gonna look elswhere or get one second hand lol

[mattybyrne2008]

is your car mapped man?? if it is most tuners run the lambda sensor in closed loop for better mpg for some reason i dont know so if its mapped plugging it out shouldnt make a differance

[Foxyfenlon]

I got a universal 3 wire sensor out of the motor factors for my 15...
Worked fine, sumthin like €60 or €70

[ali-d1936]

ya one of the lads mentioned that about the universal one. i rang the auto factors and they recommended not getting the universal one for a japanase car as they work on small tolerances and it can reault in over fueling and ruining the cat ect... are they over exaggerating or i really cant see me spending 300 for a new one...

[ali-d1936]

or is there a way to clean the current lambda?

[ali-d1936]

well bought a genuine 2nd hand lambda and fitted it yesterday but makes no diffrence but i did notice when I shake the one I put in there was a metallic rattle commimg from inside it??? might the one I just got be wanked too?