P0420 Solved (I think...)

[kowsmou]

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[bz4kev]

Glad you have sorted it op sounds like the fix will be fun just don’t get any speeding tickets and if you get pulled over good luck explaining why glad you can now enjoy

 

[RustyZ4]

Well that's good to hear, no good driving a Z like a granny (no offence) especially if it saved you £1200the only time I did that was when I had to drive to North East and realised I had left my wallet at home :x managed to get 47 mpg out of a 3.0 litre, so embarrassing driving at 50 on the motorway

 

[Number5]

I've experienced the P0420 error before and a dose of Cataclean and sticking to momentum (or any 98 ron fuel) cured it. Cheap easy fix

 

[buzyg]

What a fine way to cure a fault.

 

[Monkeydonkeyratmagic]

Cats clean themselves at 7000rpm and 800c iirc for at least half an hour iirc.

As well as licking themselves.

 

[Mr Tidy]

I've experienced the P0420 error before and a dose of Cataclean and sticking to momentum (or any 98 ron fuel) cured it. Cheap easy fix

Yes, I've had P0420 and 0430 in the past. Cataclean and super-plus fuel has worked for over a year now!

 

[bluepain]

good to hear you cured it.
where did you get your oil filler cap.
ive had a similar issue ,my oil filler cap seems allright,doesn't look worn ,but its worth a try
was yours simalar worn or did it look ok.

 

[kowsmou]

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