Repair Gurus,

I am hoping someone would know what's going on with my 1995 C220. Recently, I noticed voltage drop when the electric fans turned on. I have checked pretty much everything from battery, voltage regulator, and relays, yet haven't had the solution to this little issue.

During the drop, I could feel engine misfire along with voltage lost on the electronics for one short second. I do know for the fact that at the same time the electric fans kick in.

I suspect a malfunction voltage regulator, although it works fine when I tested it.

Should I changed the regulator anyway? Is there anything else I might've missed?

I appreciate your help.