LS2 issues

[Wookie327]

Can anyone please tell me the location of the 02 sensor on an ls2

 

[harrop.senator]

Will be before and after the cats post manifolds.

 

[Wookie327]

Will be before and after the cats post manifolds.

Thank harrop senator I’m having trouble diagnosing a miss on cylinder 5 changed plug/lead/coil/ and injector so far nothing also done a compression test an seemed to be fine any ideas anyone

 

[harrop.senator]

Could be a sad lifter or valve spring. Usually comp test would show it though because it's not completely closing or opening as far and you'll see a variance.

 

[07GTS]

sure yours is an ls2 as they were only in the hsv's, what year caprice ? they changed lifters around the 2008 range

 

[Wookie327]

Could be a sad lifter or valve spring. Usually comp test would show it though because it's not completely closing or opening as far and you'll see a variance.

It,s a 6.0litre 2011 caprice so if I remove the head and sort it out it should be ok...? Thanks for your help guys

 

[07GTS]

yours might be L98 or L77 afm, if its L98 should have the LS3 lifters if its the L77 then will be dod lifters

 

[Wookie327]

yours might be L98 or L77 afm, if its L98 should have the LS3 lifters if its the L77 then will be dod lifters

How can I tell the difference I’m not around the car at the moment but what are dod lifters? Can it be fixed without a rebuild?

 

[07GTS]

it will be on the passenger strut tower tag plate, the dod lifters are designed to collapse for the cylinder deactivation so can be louder anyway or they do have some issues over time, LS lifters can be replaced its a heads off to get to them, best to find out which engine u have as any fix if there is an issue is very different to each engine or option u want to go

 

[lmoengnr]

2011 Caprice will be an L77.