true. I was just thinking worst-case.

How do i know if any damage has occured as a result of overheating? Worst I have personally experienced was yesterday when i could hear substancial "gurlging/boiling". No leakage though. I'm concerned about the previous owner though.

Motor runs fine. Any way to tell if damage has occured?

 

Several ways to check for overheated engine damage which usually causes coolant leak into the engine oil and coolant burning in combustion chamber due to warpage in head/cylinder.

Coolant in engine oil.
Coolant smell in exhaust gas.
Leak down test.
Spectrochemical test of your engine oil sample.
There are several ways to check.

If your engine runs good, leave it alone.

The one in black shows the coolant temp and the other is just an ambient air temp. The best $20 I've ever spent on my 750.

 

I was hoping you'd say leave it alone if it ran fine [img]i/expressions/face-icon-small-smile.gif[/img]

Sweet mod, can you give a brief description/write-up, or post a link to one that you have already done?

you've been very helpful. Are you a Kawi tech?

 

finally getting the tools/time to look into this tomorrow.

any such thing as "over-cooling"? Thinking I may hard-wire the fan into the headlights and just run the headlights & fan all the time as a temp fix if need be. Just to get me through the weekend. Any potential negative side efeects?

 

No, there would not be such thing as over-cooling on this engine since it has a therostatically controled cooling system.
What I would worry is:
> Draining of battery. The alternator amp output must be greater than the total current usage.
> Excessive wear on the fan.
> Excessive current flow in the headlight circuit of the main harness, possible melt down of wires.
I know you just want a temp fix, but I say fix the fan problem properly and use it as designed.

 

good advice, thank you.

 

I'm having a similar problem with my 06 650i, combined with a charging issue.

Could the wiring/connector cause both?

 

from what i've read, yes, it can cause both.

it's not that hard to fix. Pull off the rear fender to access the rear buss connector (taped into the harness, the size of a matchbox or smaller). Cut it out, bull the busses out and clean them up (they'll likely have some blue-greenish corrosion). Put the electrical grease to it and tape it back up!

 

Found what you all mentioned and just want to make sure that you wire all white to white and all brown to brown?

I have some pictures, but don't know how to post them.

 

All fixed and alternator and fan both working.

I'd advise anyone with one of these machines to fix this now, before it becomes a problem.