I have a 2008 Peugeot 308 1.4 petrol. I got this car a few weeks ago, and ever since I got it, I seems to have a problem with the anti-pollution system. The anti-pollution warning light comes up to indicate a fault every time I start the car up. I went to a mechanic to get it checked with a computer, however I found out nothing helpful.
https://www.youtube.com/watch?v=M4oH0bjaOLE The icons don't actually flash, only records as if they are, beep noise is anti-pollution faulty warning.
I noticed that for some time, whenever I start the engine up and I just sit there for the first minute or so, the revs drop from 800 (what it starts at) to like 700 and then jump back up trying to get back to 800. The change of the sound from the engine is concerning and not sure what it could be.
I'll be visiting a mechanic soon to hopefully have a look at the engine. Worth pointing out - this car had the timing chain changed just before I bought it and it was suggested by another mechanic that maybe the chain is out and should be looked at.
Any advice would be much appreciated