thanks for the info on the fan clutch Scott. i had cross checked it before on the CD's and the cut in temps are "96C-104C" which seems low if those are coolant temps. i guess that is when the clutch starts to activate but not fully lock. the information indicated was also for M103's only on the W124. i myself have heard that fan roar in the summer before but after i installed the "cool harness" mod i have not heard it since.
1993 300e-2.8 - gone now <sigh>
"Do not adjust your mind, it's reality that's malfunctioning"