Been having trouble getting my co down and im worried ive played with it to much

anyone know how to get the co screw back to centre ?

cheers paul

 

I think but not sure by any means it is 5 turns counter clockwise, then 1 1/2 clockwise to get somewhere near, shouldn't play with "it" so much naughty boy ha ha!!
tabetha

 

ha ha, i knew it was something like that will have a go later this fueling this is pissing me off now

 

dont fiddle mr p........ its gets you in trouble

 

I fiddled with your mums breasts that didnt get me in trouble

 

to do it properly

run engine up to temp
unplugg the iscv (leave engine running) (iscv is on top the throttle body grey plug)
adjust idle on throttle body screw to 900rpm
re connect iscv, and idle should stay stable. (you need to do the above before the cooling fans come on!)

then 5 turns on the screw, this takes it back past zero, then 2.5 turns out.
Remember,its a potentiometer, not a normal screw, so it only adjusts a certain amount, no more or no less, even if you turn it 100 times, turning it back 5 times will still take it to zero.

what chip are you running and what does the CO% have to be at idle according to your chip?

 

5 turns then 2.5 either way mate ?

its a msd 380+ chip for greys & t38 on l6, cant get the co any lower than 9.05%, its in the 10's - 11's on idle on my innovative cruise is around 13.5-14 so not to bad there but full chat its been known to go into the 9's

ive changed the water temp, air charge and map sensor and its still the same, prob going to send it back to msd for them to check as im running out of ideas, also had the inlet off and checked all hoses for leaks

cheers for the reply

 

co should be 2.7 to 3.5 % according to msd

 

might be a long shot but what fuel pressure have you got

 

3.5 bar with vac hose off

 

We've checked and set the fuel pressure to 3.5 bar with the vacuum pipe disconnected as stated in the info given to Paul by MSD.

Also tried my MAP sensor aswell to eliminate that.

 

Beat me!!! Lol!

 

ok it was just a thought m8

 

 

iv had a chat with martin about a car in the past that was doing the same and it was the injectors at fult . how long have you had them in the car and have they ever been cleaned and tested as this can kill a motor

 

had them on there about 6mths now mate, you mean if a injector is weaping ?

But with my old chip everything was fine

 

i flicked your mums bean and never got in trouble!

 

I had exactly the same problem (fueling rich only at idle, Co was fine), never did fix it despite numerous conversations withs MSD That was meant to be closed loop as well!

 

what you mean rich at idle but co was ok ?

Dont want to use the car now as when i pull the dipstick out its pure fuel

 

If all the plugs are the same colour unlikely to be an injector fault.
They, ie cossie engines don't need to be this rich, mine idled 100% perfect at 0.97% CO, 137ppm and NO CLOSED LOOP, oh with 200,973 miles on it, on GREYS.
Best thing I ever did was ditch the w/m ecu, wouldn't even use a free one if already set up.
All you can do is go through the usual, which you certainly seem to have covered.
tabetha

 

I did take the plugs out a while back to clean them and they all look pretty much the same colour i will check that again tomorrow i never thought of doing that

what would say number 2 look like if it was leaking ?

 

That sounds bad

It would be more sooty/darker colour mate

Whats changed since it started doing it?

 

the chip is the only thing ive changed mate used to idle at 14 with the a1 chip but cant not on the msd one, its using so much fuel its unbelivable, when i boot it its like an episode of stars in their eyes

 

Well I had exactly the same at idle was a nightmare getting it changed too, good luck!

 

its not that bad at idle considering the fuel there does chuff abit though, realy smokes on start up though

to be fair ive spoken to kenny and steve and theyve been realy helpfull so fingers crossed it is the chip because ive run out opf ideas

 

probably need an oil change paul when its sorted
cheers shaun

 

i'll pour it straight in the tank mate it 90% optimax

 

Sent the ecu with the chip off this morning to msd, so hopefully they find a problem

 

Hope u get it soorted mate .....!

 

Got my ecu & chip back from msd this morning in record time, found no faults although they did adjust the chip slightly as i forgot to mention the 4x4 inlet & spacer i had

Cruise whise the fueling is bang on at 14.4 - 14.8

Idle is still very rich and also on boost, now i was playing around on idle and when you slightly press the throttle almost nothing the fuel drops right off to 14-14.5

could this be due to a tps fault ? i did set the tps a while back to what i though was ok, it also sometimes drops off its self then richens up again

 

It's probably the cps sensor Paul

 

thats what im thinking may try another 2wd one at the weekend

if only my fucking secs monitor worked it would come in handy

 

put your new phase sensor in to paul

 

bad boy rs

did you get this sorted, as im having the same issues after fitting my msd chip

cheers
mark

 

Had the car set up a few days ago and all is good apart from the idle co, msd are going to recalibrate the idle fueling for me, theyve been very helpfull mate so get in contact and im sure they can help

 

It shows clearly the advantage of getting it mapped, as opposed to a chip, so best of luck to you.
Don't even know the AFR of mine at idle!!
tabetha

 

99% of the time these issues are set up faults, i see cars everyday running our chips which are supplied off the shelf and if correctly set up they just work fine, which is why we are confident when we supply them they will work.

other issues which we come across, are peoples engine specs which sometimes for one reason or another are not what they think, and means large changes in manifold depression, this in turn causes the ecu to reference a different load site at idle than we would normally see, and these sites may have more fuel in them, as an example, this can be caused by head work, cams, poor lifters, or any number of small changes people have made over the cars life.

we are always more than happy to tweek files and get the most out of them for you, there is no question of that, but you need to be 100% sure everything your end is correct. if we go taking fuel out of a map we know works on hundreds of other cars of your spec there MUST be a reason why yours doesnt work, and if you then go and rectify that issue at a later date you can so easily loose an engine so we HAVE to be very carefull for your own good.