Thread: Inertia switch question

yes, a fuel purge sequence would help

If that is the case that would be an easy way of depressurizing the injection when changing the FPR or the injectors.

So I am interested in confirmation that the inertia switch cuts off the fuel pump. Does it also stop the engine at the same time via the ECU? if so not so good.
Regards Philip A

The inertia switch is on the main relay coil's circuit, it's official name: "inertia fuel cut-off switch" it cuts the main relay's coil feed which means ECU battery feed and fuel pump relay's coil which is through the main relay's contact, it's also linked to the BCU to activate the central door locking as to open all doors when tripped and according to the setting the hazards can flash too.

This morning it was reluctant to start so i performed a purge, it started but not sweetly like it has been so will see tomorrow how it goes, I did give it a 15k run tonight that might help.
Before unscrewing the inertia switch for a couple of weeks it has been stalling on first start but fine on the second start, it will fire on the first revolution then stall i blamed not preheating long enough although i have read on the forum the glow plugs are not needed in Qld, I don't know about this as i have a Excavator with a 3cyl Kubota which will not fire until the preheat is done, same with a Nissan Sd22 i use to drive, a big difference in technology between these motors i realize.
My biggest problem with this Disco will be not enough use and will cause an array of small problems, My last ute i had for 10 years and only put 30,000ks on it.

You might need to replace the injector copper washers if they were not done before though better put a new air bleed valve in the rear wheel side port of the fuel filter head before that cos this can cause such symptoms as well ...google out WJN500110

Thanks Sierrafery, I will pickup a valve today as for the copper washers it does appear to be making engine oil, i need a Gas leak test done on the coolant as i suspect the head gasket might have a slight leak as i can get a 20cent size bubble around every 2 minutes in a full header tank, It's a annoying amount [bubbles] i would prefer heaps of them then you know what has to be done as i'm not sure if the TD5's suffer from airlocks or cavitation.
The washers and harness are on the To-Do list i just need to make a informed decision on the head gasket.
Cheers