<e34> Dead 535i...

[LFmpower@xxxxxxx]

Hi OJ 

You may have a bad diode(s) in the alternator .. 

And it may be introducing  AC voltage into the system.. 

This is very hard on control units  both engine and ABS (The electrical 
version of pouring sand into the engine oil filler)  

and will kill batteries

Voltage will still be there .. just the wrong kind ...

Have your tech check for this by looking at the oscilloscope pattern of the 
voltage output.  It should look like interconnected "M's"  MMMMMMMMM (with 
rounded peaks and a definitive cutoff line at the bottom. If the Diode's are 
bad  the pattern will have a full sign wave like a mirror image of the "M" 
attached to where the definitive cutoff line should be 

good luck 

Leo  Franchi
Midwest Motorsport Inc.