brayden100

hi can anyone advise my engine check light came on after i went to boot my car last night i hit round 4.5k revs and it started to backfire and lost power just holding back and keep backfireing i pulled up and the engine sounded as if it was hunting. i started her up just now and normaly it goes to 11rpms then dies down as she warms up then engine light is still on and it just doesnt sound to well its a 99 gc8 sti import

MattyB1983

iTrader: (51)

Use this link to help discover what fault code it's throwing up.


http://www.jollygreenmonster.com/error_codes.asp.htm

brayden100

cheers matey hope its not nothing bad will the car go into limp mode with the engine light on so i cant damage the engine?

MattyB1983

iTrader: (51)

Just don't drive it until you've done the check buddy.

brayden100

ok matey ill get on the blower tomoz and get it sorted cheers for your help

MattyB1983

iTrader: (51)

Do the check and find out what code it's throwing up. Post your results on here and we can advise from there chap.

billy21

iTrader: (4)

Sounds like the maf has gone. Used to mine doing it now. Wouldn't drive it

brayden100

iv had a new maf on it tho aswell its not even that old i used to run an induction kit but then went to panel filter green cotton so could i have a problem thats killin my maf then?

brayden100

ill post up the code when i get it done hopefully tomorrow lads.i was driving for few hours last night and she was fine all night then on my way home on duel carrage way i went to give it sum i hit 4.5k then she just holded back and started backfireing on me then the engine check light was on

MattyB1983

iTrader: (51)

Was it a new MAF you fitted or a second hand one ?

brayden100

it was a new one mate its only been on the car a few months

brayden100

iv got another maf in my old induction kit that i think is still alive do ya reckon iv i swapped it for that and tried it? for instance if it did work would it take the engine managment light off

brayden100

iv just sold a brand new one aswell so pretty fuming if it is the maf sensor mate

brayden100

iv just had a new ecu in aswell you dont reckon that could have anything to do with it do ya mate?

MattyB1983

iTrader: (51)

Check the code and go from there fella.

brayden100

will do mate thanks again

winston69

iTrader: (30)

Checked it yet?

the hamster

iTrader: (7)

what mods are on the car? and why did you have a new ecu? sounds like boost cut or could be maf/coilpack/fuel related so pulling the codes and giving some details on the ecu swap/mods will help us point you the right way chap.

brayden100

hi lads no not checked yet im trying to get hold of someone with a code reader and the reason for changing the ecu was because the old one was because when i came to starting it up in the morning it struggled to start and at that point i had an induction kit on so i took it to carnetix in melton mowbary she said to me im better with a panel filter so i changed from induction kit to standard air box with green cotten panel filter and a new maf sensor,they tried to do a code test on the ecu i was running and they said it was an austrailian map and jgm couldnt tweek it so they puy me a new ecu in standard then the car was fine, since havin the new ecu my car idles just over 7k rpm sound really low tel ya the truth en the mods i have is afterburner vortex back box and and centre section and the cotton filter thats it
the old ecu just says J2 22611 AF041 A18 000 DOZ UNISIA JECS CORPORATION JAPAN thats all i can tel ya lads and this map was running 1.3 bar

brayden100

i also have a 3 port boost solonoid

brayden100

de cated asell from turbo ihi vf23 turbo

MattyB1983

iTrader: (51)

So the ECU in your car now hasn't been mapped to suit your car.

7K rpm on idle, guess you mean 700.

You don't need a code reader. Look at the link I posted again.

MattyB1983

iTrader: (51)

Australian map....???? lol..

brayden100

wot do i have to do mate i looked at the link you posted en i no wot ya sayin it says japan on the ecu so load of **** to me en what do i do then to find out how to get the code up ill go do it now. 700rpm i did mean that

MattyB1983

iTrader: (51)

You don't need to go near the ecu.

Read the info in the link. It's says about putting the two black plugs together etc etc.

brayden100

hey lads iv got 2 green connectors aswell underneith the dash iv fount the black ones i think i plugged them together en the engine light started to flash but didnt see any codes?

MattyB1983

iTrader: (51)

Reading ECU Error codes
Turn OFF the ignition

Connect Error code Connectors :
2 black connectors under dash, connect black to black, they are by your left knee when sat in the drivers seat and often taped back to the loom if they haven't been used before.

Turn ON ignition but don't start the engine

Engine Check lamp comes on flashing either once per second (OK code) or an error code


Error Codes

An Error code is defined as a slow flash followed by fast flash
i.e 2 slow and 3 fast = 23 Mass Airflow sensor.
A continuous on/off at the same speed is no fault found.

brayden100

right lads not getting no codes but the engine light is flashing 2 times then it does it 3 times

brayden100

if im reading it right like you say m8 its my maf sensor then

the hamster

iTrader: (7)

A standard ecu running all those mods sounds like a dangerous combination to me, especially if you've taken the original ecu out.

If your original one has been mapped then it would have been via ECUtek so would have a £150 license on it. Personally, i would have done what you did and put the airbox back on and a new maf then got the map checked/tweaked.