Welcome to Just Commodores, a site specifically designed for all people who share the same passion as yourself.

New Posts Contact us

Just Commodores Forum Community

It takes just a moment to join our fantastic community

Register

P0420 p0430 catalyst below threshold

Fu Manchu

Auto Correct is not my frog ballet.
Joined
Mar 18, 2006
Messages
20,830
Reaction score
27,451
Points
113
Location
Western Australia
Members Ride
Kia Sorrento, VZ Crewman, VZ Cross 8, & ya mum.
Cheers for that i shall test the harness and check out the video and get back to you.. pcv isn’t blocked either. What’s the mod
You’re talking about ? Tia
The holes in the PCV were too small. Folks in the US worked out the right size and modified what they had. It worked. It worked well. GM followed their lead and in last VF’s included the revised PCV.

I did a walkthrough on the mod. It stops too much oil entering the intake system.
 

Smithky

Member
Joined
Nov 9, 2012
Messages
114
Reaction score
0
Points
16
Location
Shepparton, Victoria
Members Ride
08 VE/ 98VT
The holes in the PCV were too small. Folks in the US worked out the right size and modified what they had. It worked. It worked well. GM followed their lead and in last VF’s included the revised PCV.

I did a walkthrough on the mod. It stops too much oil entering the intake system you have a link or I just search pcv mod
 

krusing

Well-Known Member, Possibly for the wrong reasons
Joined
Jun 21, 2014
Messages
6,093
Reaction score
4,846
Points
113
Location
Melbourne
Members Ride
2002 VY L67 Calais Sedan, 2012 VE L77 Calais Wagon
I had a similar issue with my LY7,
I tried a lot of options, as I had plenty of time on my hands, and still was unable to fix it,
Which left only 1 last option,
I bit the bullet,
and replaced the chains,
That was 46,000 k/m’s ago.
The rest is history.
And drives great,
Keeping in mind, I change the oil every 6,000 k/m,
And the oil filters every 2,000 k/m, as it’s still cleaning some of the sludge out, and you can see the crap in the oil filters.
 
Last edited:

Smithky

Member
Joined
Nov 9, 2012
Messages
114
Reaction score
0
Points
16
Location
Shepparton, Victoria
Members Ride
08 VE/ 98VT
So I did the idea in video with shop VACC and found 4 leaks I took the cats off to clean replace gaskets ect and the drivers side one has blown out again and I don’t think there genuine as you can see the two on the car are diffrent then the other one is that why it keeps killing catalytic converters
392E49BC-4C7B-43BD-9CA9-732E9A5E58F1.jpeg
F3AE7400-BC11-4F54-8787-4810FB1F7140.jpeg
 

Fu Manchu

Auto Correct is not my frog ballet.
Joined
Mar 18, 2006
Messages
20,830
Reaction score
27,451
Points
113
Location
Western Australia
Members Ride
Kia Sorrento, VZ Crewman, VZ Cross 8, & ya mum.
bottom pic is genuine.
Yours are generic.

Possibly high flow cats and leading to the fault, or not Euro6 compliant?
 

Fu Manchu

Auto Correct is not my frog ballet.
Joined
Mar 18, 2006
Messages
20,830
Reaction score
27,451
Points
113
Location
Western Australia
Members Ride
Kia Sorrento, VZ Crewman, VZ Cross 8, & ya mum.
If they aren’t Euro6 compliant, the emissions being read by the O2’s will be outside the expected range by the ECM and will result in a code be logged by the ECM.
 

lmoengnr

Donating Member
Joined
Jan 15, 2012
Messages
7,296
Reaction score
49,942
Points
113
Location
Sunbury Vic.
Members Ride
MY12.5 Maloo R8, MY12 Redline ute, Magnum 224
Not even Euro 4 compliant.
 

convas

Active Member
Joined
Jan 10, 2008
Messages
113
Reaction score
32
Points
28
Website
forums.justcommodores.com.au
Members Ride
2011 Commodore SSV
This is what a fully holden dealer serviced SV6 pcv valve looks like ... you would think they would take it out and clean it every so often.
And it did start spitting a p0430 code recently

1704089174521.png
 
Top