Hello
I have a 2008 231 with 55k miles on the clock.
The car idles quite smooth, but when I put on the A/C the engine starts to vibrate, if I put on the headlights or rear windscreen heater then the engine struggles.


I noticed when the cold start air pumps swtiches off when warming up, the side lights suddenly get brighter.


Is this a sign that my battery is shot? The other day my girl friend used the car she it sounded like the starter sounded sluggish.


I have checked the battery connections and grounds, I habe also added addition grounds fromn the engine, alternator, etc.


Has anyone come accross this?


Thanks


Antony

 

Time for cleaning ESS, MAF, and maybe grounds..

Check out the congrats thread below...

 

Mild vibration from the A/C is pretty normal on the 8 from what I've gathered reading on here. Shouldn't be any violent vibration or anything, check the things mentioned above and also check your motor mounts.