codes P0016 and P0018

[markovr]

done the timing chains etc on my vz alloytec and desludged the engine(major job) ...everything was fine for a couple of months after but now its throwing those 2 codes at the same time.....clear them and back they come together....but no other code.....swapped one of the cam sensor over and nothing changed.
Motor starts fine runs fine and runs well at any rev range but chucks up the check powertrain warning.
The variable cam sprockets were really sludged up but I just cleaned the outside and put them back on... the actuators were really sludged up ....the screens were covered big time to the point I didnt even know they were screens and I bathed them in heavy duty degreaser and they cleaned up well like brand new.
I am sure I got all the marks right on the chains/sprockets and took pictures to confirm it before I put the timing cover back on.
Any ideas?

 

[car_driver]

Have you seen this?
http://forums.justcommodores.com.au...etching-article-those-who-may-interested.html

 

[markovr]

Have you seen this?
http://forums.justcommodores.com.au...etching-article-those-who-may-interested.html

Thanks for reply but I used a brand new chain kit and it uses a roller chain from idler to cam sprockets...hasnt done 10000kms since install

 

[Fu Manchu]

I just had my timing chain done yesterday. Ran sooth yesterday but is starting to run rough again, unstable idle. New coils, plugs, cleaned engine.
Expecting to see these two codes again soon.

Could the ECM be worth a look?
With the help of @EnviousCustoms it could be a cheap solution?

 

[steveyc]

Im having the same issues and replacing the ECM has come up as a possible fix. If you've already pumped cash into fixing it, it might be worth a shot.

 

[markovr]

Im having the same issues and replacing the ECM has come up as a possible fix. If you've already pumped cash into fixing it, it might be worth a shot.

Gets it reference from the crank angle....engine runs fine but is a common source ...it has the sludge treatment too ...didn't get to actually clean it but there was plenty of degreaser floating around when I was degreasing things
Also has anyone pulled the cam drives apart before?
Funny thing it never threw any codes with the engine fully sludged and oil straing to get through the pickup screen chains rattling at times but now with everything clean and new up they come.

 

[gungazza]

what was the price of the chains worth