Missfire

[2002VyCommodore]

Hello guys wondering if anyone on here would be able to point me in the right direction of where to look chasing a missfire or something,
Ive recently purchased a 2002 vy commodore and it has a miss at idle also on cold start it idles low on my 2004 vy it used to idle around 1200rmp on cold start,
Ive noticed that when you try to accelerate in the range from 1000rmp-2000rmp the car doesnt seem to want to go its more of what sounds to be a miss,

Things ive replaced so far are:,
Tps
Iac vavle
Intake gaskets all the way through
Vacumme hose under throttle body
Spark plugs
Coil packs
Battery
Fuel filter

Any advice or tips would be appricated thanks in advance guys

 

[krusing]

Leads ?

 

[2002VyCommodore]

I have swapped with a set i had laying around but i might go grab a new set just to make sure

 

[Lex]

I have swapped with a set i had laying around but i might go grab a new set just to make sure

Did you change the dfi too?

 

[Lex]

Fuel filter

Fuel pump?

 

[2002VyCommodore]

I havent done either of those as of yet

 

[Lex]

I havent done either of those as of yet

You've said you changed the fuel filter? How?

 

[2002VyCommodore]

Theres a fuel filter infront of the tank after the pump?

 

[Lex]

Theres a fuel filter infront of the tank after the pump?

Forgot about that!