s2 ben

my s2 has started 2 pop and bang and the car starts judering it will only do it when u put your foot down when you let of its ok till u go over 60 im thinking wiring 2 fuel pump what do u lot think thanx

adamS2RST

Could be a number of things, when was the cars fueling last checked?

s2 ben

dont no mate not had the car long gona get it set up soon the thing that makes me think fuel pump is my mate fitted a fuel pump on it few weeks ago its ok till u try n overtake then it starts juddering n popping n i have 2 cut back in couse it aint got the power 2 overtake only does it sometimes aswell

Ad4m RST

if it pops and bangs when you boost it could be the ECU cutting the fuel due to overboosting....

needs a setup it sounds like mate

s2 ben

it does mate jst trying 2 sort this problem first its not overboosting its set to 7 psi also it will do when you r not on boost my mate reacons it carnt be the wiring to the pump or it wouldnt run

adamS2RST

Yup, now you mention that it sounds like it's overboosting, is the car not chipped? Does it have a boost gauge? You need to know what boost its running because it sounds like the ECU is shutting the car down.

s2 ben

no its not chipped yet its got a boost gauge reads 7 bit higher sometimes but it doesnt always do it ive took it 2 rev limiter b4 n its not done it jst seems 2 do it more often now what boost can u have on a standard ecu

adamS2RST

7psi is about right mate

RS_JAY

Has been cold & frosty lately. Woudnt be a damp ht lead. Mine use to do the same. Changed the leads & it was fine.

vroooom ptssssh

boost can rise a few psi in cold weather!! if it's boosting to over 7 sometimes, then add on a bit for cold weather and it could be hitting boost cut whats that 10 or 12psi i forget.

Anonymous

mine does that when she starts like its not running on all cylinders then shes ok drive off and come on to boost and it sounds like anti lag might try new ht leads to see if that works

s2 ben

it only seems to do it when warm tho

ASHCOSSIE

mines doing the same kind of thing only realy happens when it gets warm it seems to be getting worse on mine as it is now holding back as well
it will prob break down on me and then ill be able to find out whats rong
every one ses to get it tuned but mine was fine untill this started happening so hope fully i can find out whats wrong and fix it myself and save some cash

andre_k

iTrader: (2)

take it to jamsport or someone nearer with a good rep, theyll sort it