Lots of problems with my xantia 1.8i Petrol '96 model.
1) Foul smell coming out of the vents, even with the fan switched off. Changed the A/C pollen filter. Foul smell still present.
2) Orange light flashes for 20 seconds when the car starts. Changed oil, problem still present.
3) Car temperature always rises more than 80 degrees... usually runs at 90 degrees and over.
James