Quote:
Originally Posted by andrewwynn
I have never noticed fan act like this. Are you sure you're not confusing the sound of the SAP fan at start up? Also even when warm I've not had a problem stopping a fan clutch with the likes of rolled up paper.
|
The OEM Behr Sachs fans work well, with little noise.
I am certain the noise I described is not coming from Secondary Air pump. I replaced an SAP recently also and know what it sounds like.
But if you can stop your fan with a small roll of newspaper when the engine is hot, then you should consider replacing the fan clutch.
I just replaced mine on my "05 E53 3.0 with 135k. I knew it was bad when I couldn't even unscrew the fan clutch nut after I had loosened it with the fan clutch wrenches. My was nearly not grabbing at all.