rog

iTrader: (2)

Has a stage 3 Ahmed chip, and it's a 4x4 with L8 ecu, is this ok???
EDITED as I just looked at the emissions results the CO was slightly lower than first thought.

Jim Galbally

no. has the car been prefessionally set up

tabetha

As said needs looking at sooner rather than later.
tabetha

rog

iTrader: (2)

Well it has but a long time ago, what's the best way to adjust this/check where the problem is??? I'm 99% sure it's something that's not set right as the car has been totally overhauled and most of the parts are new. I don't think there is actually a fault anywhere.

rog

iTrader: (2)

Also, forgot to add, the car has a SECS monitor and everything "looks" ok going by the readings displayed on the realtime info.

rog

iTrader: (2)

Anymore worldly advice to give???

cozmeister

iTrader: (1)

The CO reading disagrees

If it was OK before the overhaul, and isn't now, then something has changed - possibly a replacement part (like a sensor) is defective.

Is the fuel pressure OK at normal and at fast idle?

Is it a green or red top ECU? Are you using a lambda sensor if it's a red top ECU? If so, is the lambda sensor new?

Chip

iTrader: (3)

Well if you are correct, then the CO machine is obviously broken

rog

iTrader: (2)

All the sensors are new bar the lambda which is about 3 years old, it was running bad before it was rebuilt, but i never had that diagnosed as I was replacing everything anyway. It's a greentop engine, has no cat.
What I mean by there is no fault, is that I find it VERY hard to believe that something is broken if it's new.
Bar playing with the screw on the ECU what else can I look at, the phase sensor on the distributor?

Chip

iTrader: (3)

If it was a phase sensor error then typically it would misfire on boost IME.

Turning the CO screw seems a good place to start.

Turbosystems

iTrader: (5)

doubt very much that your stage 3 has closed loop lambda

tabetha

If the old engine was burning oil for example hence the rebuild ?, this could well have killed the lambda sensor.
tabetha

Jim Galbally

tabetha, as per tony... its an off the shelf ahmed stage3 chip so it wouldnt matter if he replaced the lambda sensor with a lollypop

dom123

iTrader: (1)

did you check to see if the rad fans were on while checking? as this scatters the results all over the place

rog

iTrader: (2)

I know it doesn't have closed loop, it's just a pish Ahmed chip so it's not enabled, that's one of the things I'm getting sorted out before summer. The fans were cutting in but not when the test was done, gonna have a play about with the screw as said, I just wanted to check other things first before I go tamering with it.
Thanks!!!

cozmeister

iTrader: (1)

Just cos it's new doesn't mean it's not defective Always remember that.

westus1

iTrader: (6)

might just need setting up
as quite often when they've been apart like that everything is differant when it goes back together
as said earlier the lambda is irrelevant, the chip isn't looking for it
try setting up c.o
might be worth checking the fuel pressure as well