E46 - Idling Problem - BMW Forum

Richard Lowe · 11-10-2005, 10:50 AM

Hi - I have a 318i. When I take my foot of the accelerator, the revs drop easily to about 1200 then rise slightly and then over about 5 seconds, slowly drop down to where it should be at about 800. Has anyone any idea what the cause might be?

Cheers

Richard

storme · 11-10-2005, 12:41 PM

check for an air leak around the air filter and relevant pipes

use some washing liquid smeared around the outside of the varoius air pipes....any bubbles will show u where any leak is

EXtech · 11-10-2005, 12:43 PM

I would start with looking for a vacuum leak, it's the easiest, simplest and cheapest place to start. This could be anything from a loose intake boot at the throttle body to a leaking vacuum hose under the intake or even a failing crank case vent valve.

storme · 11-11-2005, 11:08 AM

erm,,,didnt i say that???

EXtech · 11-11-2005, 02:41 PM

yeah you did. At the time I was typing the reply, you hadn't posted.. nobody had. We were replying at the same time... look at the time stamp

storme · 11-12-2005, 01:31 AM

at least we are on the same level

too many ppl on this forum will say the worst case scenario ....

extech is right...look for the easy option 1st...if not come back and we will start again

sry extech