FBKC behavior, the lhs plot is filtered for transient data.
ilib11 wrote:Way, bigBADbenny, that is hell of a lot investigation, thank you heaps, indeed!!!!
I'll try to add some context and confirm the next steps:
Comments:
1) could the power steering be an issue? - I do not think so, the pump has been re-sealed, fluid changed - no change to the engine behaviour, same problem before ad after. Apart from oil sweating fixed with re-seal, no other problems with power steering. For a test, I could take off its belt and see if anything changes, but that would take the alternator out of the equation too.
2)Are all the wires to the a/c pump connected? - yes, everything is connected. It is only a couple wires for the AC clutch. Engine ECU knows when the pump is on - I have two parameters logged, they behave appropriately :
Air Conditioning Compressor Signal (On/Off) <------ actual AC pump on/off
Air Conditioning Switch (On/Off) <------- a button in the AC control panel in the cabin
AC works fine - cools and blows etc.
3)Would be interesting to see TGV in this log, but cold to warm at idle... - I looked at it separately - from cold to idle practically no change, please see min/max values here http://forum.liberty.asn.au/download/file.php?id=20325.
4) The gas test, it looks like the engine responsed to something towards the end of the log - I did remember at the end of the test, had seen no affect from the gas sprayed out, in some desperate move, I sprayed some gas directly into air filter intake. I believe you have noticed exactly that moment in the logs.
5) Roughness, a single instance, cylinder 2. - Once I saw it in the logs, I tried to replicate the scenario but could not do that. At the moment all Roughness Counts are 0 for all cylinders
Next steps:
a) next step is to look at fuel learning and fuel correction - please let me know - do you need any fresh logs for this?
b) Log FBKC / raw knock count - will search the following in RomRaider and do the following logs, will try this weekend. Please let me know if there are any other specific parameters or driving conditions needed for this log:
raw knock count
IAM (Ignition Advance Multiplier)* - current IAM
Fine Learning Knock Correction* - current applied FLKC
Feedback Knock Correction - current FBKC
Fine Learning Table Offset - current applied FLKC cell. If this value remains the same while logged FLKC changes, then the ECU made an adjustment to the FLKC in the current cell (barring any sync issues normal to logging).
c) Check some loom or ground issue - will try to disconnect ground points and clean them and reconnect. That is a next hardware battle
P.S. I am having a second hand engine ECU (same partnumber, practically same donor car) coming in - will be more room to play
And again, bigBADbenny , cannot thank you enough !!!!!!!!
ilib11 wrote:Need to find a place in Brisbane where inlet pressure & leakdown, exhaust pressure test can be done properly.
Return to 2.5T engine specific
Users browsing this forum: No registered users and 1 guest