It certainly sounds like the FSU, but not having any experience with the E34, I'm just guessing. Before I replaced mine, my blower would come on and off from one day to the next without any rhyme or reason.
Originally Posted by bjmitts
Hey there...I have a 90 535i that has a similar problem to cheweez. I can hear my AC compressor kick on, but the blower doesn't blow at all.....well sometimes it will first thing in the morning, but only for a few minutes. I pulled the FSU (My car has the "sword" style) out and looked at it...definitely looks a bit crusty. That's a $200 part for my car. I'm just wondering if I should start with that, or if I do some other diagnostics first? I pulled the fuse out and looked at it, but how can you tell if those box-like fuses are blown? And I doubt it is blown if the blower does kick on every so often.
Basically what I'm trying to get at...do you guys feel pretty strongly that it's the FSU? I'm fine with buying it...hell the dealer was going to charge me $800 to fix it, and they were talking about getting behind the dash to check on all the wiring to find a short in the system.
2002 530i | Black/sand | Rondell Style 81s: 18x8.5 Front 18x10 Rear | Koni FSD | Eibach Pro-Kit | Zimmerman X-Drilled Rotors | Axxis Deluxe+ Brake Pads | StopTech SS Brake Lines | 50w 6000k Xenon Lows/LED Fogs/Phillips Luxeon LED DRLs | Angel i Brights v3.0 | Solaris Invisibulbs | Shadowline Trim | ///M5 Trunk Lip Spoiler | 35% Madico Tint | Dynavin D99+ ///M3Evolution | Backup camera | Intake Muffler, Front Plate, Badge & Cup/Coinholder Delete | Klasse AIO+SG