High Idle / Ticking?
I've noticed 2 strange problems with my 1998 318is (4 dr), which might be linked - was hoping someone could help!
The engine idles at around 1700 rpm whether hot or cold, which is way too high.
Also, when accelerating there is a fairly quiet ticking noise which seems to come from 'inside' the dash. No noise when idle, but becomes audible and gets faster as I accelerate. Then foot off the gas at speed and the noise disappears again.
Someone told me the high idle could be to do with a vacuum leak, so I think I'll need to check the gasket on the input manifold. Could this also be the cause of the ticking?
Any suggestions would really be appreciated!