Evening all.

Cutting a long story short...

After replacing the crank sensor, the stalling fault never returned. I was left with a horrible "stumble" under hard acceleration at high revs.

With some road testing with the scope hooked up there was some evidence to move forward....



It can clearly be seen that the MAP sensor nor the MAF are generating a signal that might cause a PCM response. However, the rail pressure sensor signal (in blue) is seen to be the first to show any shift from the norm. The increase in the inlet metering valve current is the PCM taking counter measures, to keep the rail pressure in check.

So with that in mind, I decided that a new inlet metering valve would be a sensible move. Sure enough, several days later with many extended road tests done, it has been faultless.

Just as a matter of curiosity, I noticed something in the CKP waveform that gave me cause to inspect the 18th gap in the flywheel reluctor ring. sure enough there is an odd shaped hole punched, as seen in the following images.......


.....

On another scope capture I have taken, it can be seen that the 18th hole lines up quite nicely with the firing event on injector one (cylinder one ). Can anyone shed any light on what the purpose of this is?

Anyway it is fixed.

Thanks for reading

Regards

Dave