Your temps are in range. I wouldn't worry about the exhaust. It's common when the car isn't fully warmed up. (Takes roughly 30 min to get the oil up to operating temp.)

 

http://forum.e46fanatics.com/showthread.php?t=964491

99 is fairly high. If I recall correctly mine was 93ish in normal driving and 89 in hard driving.


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All totally normal.

In these temps, it takes 20+ minutes for the engine to fully warm up. And your coolant temp is within range.

 

Normal. Bmw operating temps are from 75 to 113c. 9/10 cars run in the mid 90s.

I just did some cooling maintenance yesterday and my car also fluctuates between 95 to 100 moving to standing still.

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thanks for the quick answers! definately more relieved now.

I'm a bit paranoid because a week a go my expansion tank cracked and 3 weeks before that the bleeder screw broke. In both cases I lost a lot of water and feared of a destroyed head/gasket
The car currently has about 150.000km/93.000miles on it and magically a lot of things went wrong in just a couple of months. For example: fuel pump, oil leak (probably oil filter housing), bleeder screw, expansion tank.
Is this some kind of magic mileage where planned obsolescence starts to appear?

 

All common failure points on the E46. Fortunately, replacement parts aren't too expensive relative to other vehicles.

The expansion tank becomes brittle over time. Same thing with the bleeder screw. Good chance your radiator hoses will go next. Some cooling systems have lasted up to 200K miles while others failed under 75K miles. Luck of the draw, but do note that these components have a habit of failing in sequence which is why many replace the entire system as a preventive measure.

At the bare minimum, if you already replaced the expansion tank, I'd say replace the radiator hoses and monitor the water pump for noise or leaks.

 

hello there;

so mines somethings goes to 99, is that normal? stuck in traffic

then, start to move down to 96, 95

 

Perfectly normal.