Robski wrote:did you take into account smooth running values ?
No, I didn't.
My theory or conclusion regarding the extended holding current may not be the whole true. Today
was I trying to replicate the same test as yesterday, but this time with a warm engine and this
time I couldn't extend the electrical holding current by the 330 ohm resistor in circuit.
The test today was conducted with a 5K ohm potentiometer in circuit with the fuel temperature
sensor (G81) and the objective with this test was to simulate different fuel temperature from as
low as 0 to 140 degrees celsius and at the same observe the holding current ramp.
This is not easy task with a potentiometer in circuit you can easily make to big adjustment and
hit the upper threshold at 140 degrees and when this happens, it slowly descends to the default
value at 40 degrees celsius and a DTC are present in memory together with some valuable freeze
There is no doubt that it has a big influence on engine behaviour when you listen to it. A simulated high fuel temperature will make the engine run more smoothly or softer, but this is because it retards the injection point.
I believe that my observations with a cold engine still is true or at least to someone else have some more vital information regarding PD injector holding current and the fuel temperature.