350z HR spark plug change - throttle body

[GT Driver]

Hi all,

 

I'm planning on changing the spark plugs on my HR in next few weeks but I'm very apprehensive about doing it given the issues that can happen if the throttle body butterfly valves are inadvertently moved - and thus causing a high / hunting idle.  

 

It looks like for the spark plug change the throttle bodies need to be removed to access 2 of the 3 spark plugs on each bank.

 

Can someone confirm what I should be disconnecting - the battery and the ECU? any particular order? Any tips welcome. I've done the spark plugs on my old DE without issue but didn't need to remove the throttle body itself - just the intake piping.

 

Thanks

 

 

 

[Jack94]

Just remove the battery first and you'll be fine.

Removing the throttle body is perfectly safe, it's moving the butterfly valve inside (which there's no need to do) that can cause problems. 

[Azurez33]

Tbh I just remove them and be very careful once you unplug them they’ll reset to stored values etc if not I use the diag but I guess that’s cheating