Any E39 Gurus out there?

Valvesprung · #1 (**permalink**) 09-21-2006, 11:50 AM

My recent puchase of a '99 528 has left me grinning for days on end.

Unfortunately, it has begun to quickly and intermitently stumble @ idle. It only drops 50-100 rpm, so it's no big deal except that it shouldn't be happening. I removed the air box to take a look at everything and found that the problem stopped without it. When I blew slightly into the MAF and the car died, an odd thing for it to do. I worry that the MAF may be getting weak, but even though I am a technician, I am unfamiliar with BMWs. I removed the restrictor tube from the opening of the air box and the problem has gotten better, but not subsided.

Any great words of advice?

James · #2 (**permalink**) 09-21-2006, 01:16 PM

I suggest hooking up your scanner and seeing what codes you come back with. I have the bentley manual and could provide some answers for you.

IanBMW · #3 (**permalink**) 11-12-2006, 08:40 AM

Have you tried cleaning you're MAF? And I assume you have all basic maintence up to date.

Valvesprung · #4 (**permalink**) 12-07-2006, 03:34 PM

At this point i have no MIL, but I guess that doesn't mean there wouldn't be any stored codes. I'll throw it on the computer and see what I come up with.

To be honest I don't know how up to date the maintence is, but I know he was quite anal about service.