let me know how you got on,how did u find the air leaks

 

luck really, wasnt looking for them.
i had fuel pressure problems, turned out the regulator was leaking boost and therefore the pressure wasnt rising with boost.
so after that i staerted to look for leaks, the hose that goes from the inlet to the kidney breather, the jubilee clip was loose and leaking there to
after fixing them, with the engine running i started spraying easy start around and nothing happened so i think ive got them all now.

 

james sending ecu to you to be checked ,rich is home on the 8th so should be able to get iaw on it then

 

had a problem with my car to much fuel on idel 9.4 new tps and all fine now

 

james ,did you get my ecu

 

yeah, all seems ok though

 

didnt want you to say that .now iam still stuck

 

james, havent changed anything ,dont know if it was allright b4 as ive only just fitted a wideband and this was the first mot on this chip

 

changed the tps ,made no difference ,fuel @idle 14.7 5th gear 70 mph 3000rpm 11.2 ,then unpluged the lambda @idle 15.5 on a run 13.9
but if i give it lite throttle to bring boost up to 0 instead of - ..14.7

 

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james,i know its been a wile but just got car out again ,driving it on wednesday lamda unpluged fuel at idle 14 on a run it went to 20 % .rich has the iaw now so it will be going on this week will let u know the readings

 

14:1 at idles fine,

20:1 is massivly lean id imagen that was in over run fuel cut

 

tps then

 

Best of luck mate, I seem to have the opposite problem, goes into closed loop everywhere except idle!

 

if you are absolutly 100% sure everything is correct then we can simply change the idle stategy, no big deal there. Sometimes the difference in manifold depression can effect the load sites referenced at idle.

but you need to be sure its not any other fault, otherwise if you cure the fault at a later date, you will have the opposite problem.

9 times out of 10 there is a fault somewhere.

alternativly get in it to us and we can do whats needed.

 

james got riches wideband on it tonite and my guage read correct to riches but the mines suddenly goes to 20 wile riches doesnt .tryed to get the iaw to connect but it wouldnt think the lead fooked gettin a new 1 by thurs to check tps so i will let u know

 

james got the iaw of rich but it wot connect to ecu any idears

 

Dodgy lead mate

 

Was thinking it may be that James, but checked continuity from 232 connector to the ecu hairbrush and all three wires are good.

 

My lead is fucked, but when I got an instrumentation technician at work to check it, he said it pinned out perfectly with continuity.

If you move either ends of the cable does it make/loose connection with the IAW monitor, this is what mine was doing. Sometimes it would also make part connection, and only bring across some sensors

 

james got the iaw working it comes up with a lamda fault ,changed lamda but still has fault does the iaw read lamda ,checked all leads and there ok what voltage does it put back to the ecu

 

thats a normal fault on L8 mate, ignore it

 

what voltage does the lamda put back to ecu tho

 

james this is what the iaw showed
engine speed 825
inlet press 346.44
tps 0.25
c0 trim-40
coolant temp 75.5
inlet temp 35.00
volts 13.88
injector pulse 1.94
ignition advance 15.25
boost control 100.00

but cant get co lower than 2.5% and hc 500 ish

 

the co trim should be +-25% otherwise it effects the overrun fueliing(i think it is) i was told to keep the co trim between this.

and at 75degrees water temp, is a tad cold, should be more like 85
if that was up to temp then is it running just water? as it will run colder with no antifreeze.

tps could go down a bit, you can get to 0.07 or -0.12 that will help


other than cam timing being out, an inlet air leak or high fuel pressure then the chip needs adjusting

 

thanks mate ,tryed it with the co trim at -25 but it was 3.4% then

 

the other thing is if the coolant sensor is reading colder than it is it will overfuel.
i think you will need to get the chip adjusted at idle, even if you find another fault elsewhere, i was told it had to be +-25.

good luck tho, its horrible finding things like this. lol

 

it may well need a chip tweek, manifold depression is massivly effected with the swedish plenums and ported heads, so the idle references a higher load site

 

james ill give you a ring tomorrow what time is best

 

if it goes rich when you plug the lambda sensor in, its usually a dead lambda sensor as they fail rich