I've been having some trouble with the LS2 transplant running rough after I've been driving it for a while. I haven't touched the injectors yet.
I don't have any fault codes related to the engine, other than the fact I'm not using the Oil Pressure Sensor. I have an external unit plugged into the engine.
I bounced the scan tool data off the data list to see if it would give me any clues. One set of specs stood out... the Inj. PWM Bank 2 data showed zero millivolts, while Bank 1 was where it should be, between 2 and 6mv.
I guess I should expect to see a Bank 2 reading? I don't know.
I didn't see anything else that stood out as grossly out of specs. The O2 sensors were about 400mv apart from each other but within the 10-1000mv range.
My scan setup doesn't seem to show the 5v Reference 1 & 2 specs.
My fuel trims were just below zero, which is near 0% as expected. But unfortunetly I didn't record whether those were long or short term readings.
The MAF was where its supposed to be.
The MAP was where its supposed to be.
The second area of concern was the misfires. The data output is confusing, but there were random misfires on a few cylinders at random times. The odd thing is the Total Misfires was very low compared to how many I saw. I definitely have a miss, as it runs rough.
Are there any other data points I should look at? The injectors and coils all pass, but that could just mean they're getting power, not necessarily performing corectly. Correct?
I'm wondering if the fact that I don't get any Inj. PWM Bank 2 data that it's the reason the engine runs rough.
This is the data List I used: http://hsv-gts.ls2.com/Scan%20Tool%20Data%20List.pdf