MCharbe

Hi Rennlister,

I have a weird issue with my engine, it's a 88 turbo. When I start the car and the engine is warm, the car runs lean (the idle bounces from 300-500RPM to around 1000RPM). After a minute or 2, things get back to normal (my afr on idle is 15-16 but goes down to 14.7 when I give some gas). I suppose at that time the 02 sensor kicks in. Note that the car runs rich when I start it with a cold engine, i.e. between 10 to 12, that's normal, right!?

Anyone has a clue about what's going on?

Thanks
Mathieu