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low speed surge with TPS at 0.4%
Hi people. a rather urgent query mainly to put me out of my misery.
This cammed VY Clubsport we did last week has almost caused a divorce with a niggly low speed divibility issue in around town traffic.
Logged it today its caused by timing oscilating between 34 deg and 12 to 14deg at low speeds say up to 14km/h with the TPS almost closed at 0.4% and 800 to 1100rpm.
I have ruled out idle spark swing pid, all the torq control pids, EGR & AFR spark pids, DFCO is "zeroed" out at 140 deg C and it still does it. At a TPS over 1% it goes away and the spark follows the main spark map and stays steady and the car smooths out and just ticks along nicely. :nixweiss:
Also checked the main map transition into the base map and back again and thats all OK
Any ideas?
Mike
http://forum.efilive.com/attachment....1&d=1182402526