Date registered: Jan 2010
Vehicle: 99 E430, 01 E430 Sport, 00 SL500
Location: LA, CA
Mentioned: 0 Post(s)
Quoted: 2 Post(s)
I believe that it's a clutch fan like most cooling fans. Some cleaning solution might have gotten in there. Over the time, I think friction will burn it off and the problem will go away. For now, run the engine from cold, at idle in Park, observe the fan. Drive to shopping mall as you normally do, car is now hot, at idle in Park, observe the fan and hire someone to rev up the engine, observe the fan. If you see no spinning, that's easy, it's the no go fan causing higher operating temperature. In some other post with fan clutch problem, some people said that they could test/stop the fan with their bare hand. DON'T try it if you're not sure how to do it and you still love your hand or fingers.
I'm not sure if there's a temperature sensor/relay on your car model to activate the clutch fan. One way to find out is to go to autohausaz.com, search for all available parts in cooling system then guess how your car's cooling system was made.
But keep in mind, the fan may not be the cause. Good luck.
Last edited by mbvis; 11-07-2010 at 08:18 AM.