BMW: 86 325 starting when engines cold, vacuum leaks, vacuum leak

Question
Hi.

Lately, I've been unable to start my car when the engine's cold without popping the clutch.  Once the car's warmed and been running for a few minutes, no problem.  The dealer can't find a cause and thinks it's the oil dipstick which wasn't in securely.  This doesn't sound right to me.  Also, when the ac's on and I come to a stop, the car stalls sometimes.

Answer
Joanne,
 It "could" be the dipstick causing a vacuum leak and letting air into the engine.  I dont think it would cause a huge problem, but I suppose it could.  Unfortunately, I would ride with the A/C off until you fix the problem.  The engine has to turn that compressor, and it's not running it's best, so it causes the engine to stall.  Its alot like making you to run on a tread-mill when you have the flu.
 
 I would have a shop check for vacuum leaks and clean the idle control valve.. this could be the problem.  Also, if the car has not had a tune-up in the last 2-3 years I would suggest one.

 Good luck!
 Josh