1997 Vt Commodore issue

[lout]

if you replace a faulty part with a new faulty part
you will never diagnose it
that is one reason mechanics will only use their parts

 

[the_boozer]

can you test the fuel pressure as its not throwing any codes is it fuel pressure reg related?

 

[Weglee]

if you replace a faulty part with a new faulty part
you will never diagnose it
that is one reason mechanics will only use their parts

so where is the best place to the parts

 

[Weglee]

can you test the fuel pressure as its not throwing any codes is it fuel pressure reg related?

How do i do that please

 

[Weglee]

so where is the best place to the parts

so you are saying i should get a mechanic to do all the work

 

[lout]

best bet is to always buy OEM quality parts
if you cannot get oem or are using used parts
if it doesnt fix it, refit original part
anything tricky can be a pia
sometimes there is more than one fault also
what mods are done and is it tuned for those mods
the fact this fault comes and goes suggests to me a compromised electrical component
looking at the plugs makes me suspect ignition system not fuel

 

[Weglee]

best bet is to always buy OEM quality parts
if you cannot get oem or are using used parts
if it doesnt fix it, refit original part
anything tricky can be a pia
sometimes there is more than one fault also
what mods are done and is it tuned for those mods
the fact this fault comes and goes suggests to me a compromised electrical component
looking at the plugs makes me suspect ignition system not fuel

Modes were done long before issue started and had the memcal tuned for these modes.
So where do i start looking at ignition system

 

[Weglee]

Modes were done long before issue started and had the memcal tuned for these modes.
So where do i start looking at ignition system

How do you know if you are getting OEM parts

 

[lout]

How do you know if you are getting OEM parts

either buy from holden
or experience with quality brands
when unsure just ask here
people will give their experience with different brands

 

[lout]

Modes were done long before issue started and had the memcal tuned for these modes.
So where do i start looking at ignition system

replace spark plugs with NYK store brought, not ebay or amazon as are flooded with counterfeit chinese spark plugs
replace DFi with original or if you can borrow a dfi and coils from a friend