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Fast idle CO reading

EllisO

EllisO

PCGB Member
Member
Hi

I've got an issue with the MoT, as the car is currently a very marginal fail on the fast idle CO reading. Porsche Bristol have changed the oxygen sensor and checked the heat sensor. The O2 sensor has improved things such that it is very marginal, but not enough to pass.

anyone got any idea?

thanks
 
Standard cats & exhaust fitted?

If it's marginal, maybe it just needs a decent run after winter storage?
 
no, lots of Manthey mods, including their exhaust and cats. Haven't had an issue before.
 
I run race cats and on my fast idle test instead of reving it at the notification on the machine, we raised the revs 45-30 secs before they pushed the button to test which then gives you a notification to raise the revs and a set period, this ensured the cats were hot and it passed, hope this helps. Good luck!
 
Non standard cats, it starts to add up...... no issues before...... then, take it to another mot tester and test after a decent run while hot.

S7 knows the game you can expect at Mot time with mods to the car!
 
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