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[cmacleod540]

any ideas  fault code p0420

took car to v/hall told req new cat plus new exhust manafold due to a hair line crack price inc lab££££

went to kwick fit they told me cat is fine iam going back on saturday for further look due to eml still on,could the crack on the manafold bring up this fault code.

happy new year you lot 

[Welung666]

Yes a cracked manifold could cause it, it'll be drawing air in the crack and affecting the o2 readings.

[cmacleod540]

i understand the manifold will req replacing would this be quite easy for me to do ie undo a couple of nuts and replace the seals,or is tere a lot more involved

[Welung666]

Ideally you'll need to get 10 x studs, 10 x nuts from Vx to replace the ones currently fitted, a new genuine Vx multi-layer gasket and a replacement manifold (2nd hand OK). Couple of hours work to the less experienced

[edit]We are talking exhaust manifold here aren't we?[/edit]

[RobG]

Ideally you'll need to get 10 x studs, 10 x nuts from Vx to replace the ones currently fitted, a new genuine Vx multi-layer gasket and a replacement manifold (2nd hand OK). Couple of hours work to the less experienced

And hope that none of the originals snap when trying to extract them.

[cmacleod540]

yep exhaust manifold  i will give it a go pop some wd40 pre job

  8-) :-? :-/

thanks again have a goooooooood one

[Welung666]

yep exhaust manifold  i will give it a go pop some wd40 pre job

thanks again have a goooooooood one

Put that away and get yourself some proper penetrating fluid, PlusGas or the like

[RobG]

yep exhaust manifold  i will give it a go pop some wd40 pre job

thanks again have a goooooooood one

Plusgas is an easing/releasing agent. WD40 is IMHO a waste of time

Sh$t, must type faster

[cmacleod540]

cheers guys