LAMBDA Woes

[KenInOntario]

I had my freshly rebuilt engine installed into my car, but only to find lambda woes

I used the diagnostic software which showed essentially 0 volts on Lambda 2. I think the mechanic may have connected the sensors the wrong way around before as well.

Regardless, it caused over fuelling, and killed one of my cats.

I ordered 2 new sensors, and 2 sensor connector wires, as the old ones were fried. I ran the wires and connected them into the loom.

But no matter what I check so far the Lambda 2 is still not working. I teste the sensors, both are good.



I checked and there is 12v going to the sensor, and the ground seems to be ok as well. So the issue must be on the blue signal wire for Lambda 2.

Any pointers on what to do next? I am getting overfuelling again. I don't think I will be able to fix this in time for her MOT on Thursday

[KenInOntario]

Cleared the old fault codes.


Fired her up, still no LAMBDA 2

I diod not wait for the Red AFR error to appear again

[KenInOntario]

Is the connector easy to get to?

I have a 2nd ecu. Will it work with my immobilizer?

[KenInOntario]

Ok, looks like I got that issue fixed.

The Leads for 4 & 6 were in the wrong spot on the coil.

I cleaned all the connectors, took the plugs out, cleaned them. 4 & 6 were black, flooded etc etc.

And got her running, but the Adaptive levels seem off.

Also, when I blip the accelerator, the revs don't drop, but rise momentarily before dropping. Any ideas?

I have not taken her out for a drive yet, to be honest still terrified lol!!!

[KenInOntario]

I have a syncrometer,

got all the throttles at 6.5 - 7 CFM at an idle of 900rpm.

I thought that as well. I just rechecked, perhaps one is sticky? I had them refurbished by Powers who also rebuilt the engine. (Great guys btw).

[KenInOntario]

Redid the throttles again

Still increases RPM when I take my foot off the peddle

[KenInOntario]

Not the able, seems that the butterfly for the #1 cylinder does not return to the same position as the others straight away, takes about 1-2 secs for it.

I checked, idled it, used my hand on the throttle, rev'ed up. When I moved the #1 adjuster bracket up with my finger it instantly returned to perfect idle.

I think it needs some adjusting again.

[KenInOntario]

How did you fix that?

[KenInOntario]

The engine aside from that seems to be running well now. Still just breaking her in though for the next 900 miles

[KenInOntario]

Think I found my issue, there are no springs on the adjuster screws.

A set of 5 on their way from the UK

[KenInOntario]

Powers. Dom & Andy have been brilliant, Dom already sent me springs before I even figured out they were missing.

I would not have been able to get the rebuild etc , and running sweet without them.

I am in Canada, and cannot thank the lads for their help & patience.