Few quick questions now that my 1970 is finally running. - Page 3 - PeachParts Mercedes-Benz Forum

suginami · #31 08-12-2010, 01:36 PM

Quote:

Originally Posted by mercmad6.3

If your car has done 80,000 miles and the fan is original it's time the clutch was changed. They last around 60,000 miles. The fan will still be turning but if the clutch isn't giving enough "grip" to the fan,it won't pull enough air through the radiator. it's a common fault and your symptoms fit exactly.

I can give an "amen" to this.

My 280SE 4.5 would start to get hot at idle. The hydraulic fan was turning at idle, but it wouldn't pull enough air to make a difference.

I had mine changed, and what a difference. The engine temp stays around 180 degrees now.

suginami · #32 08-12-2010, 01:40 PM

Quote:

Originally Posted by Joe Schmoe

1970 280SE/8 (inline 6) Anybody ever see the auxiliary fan activate when the temperature spikes? It's supposed to be activated by the switch on the gooseneck. Thanks.

Yes, I have seen it come on.

After my fan clutch was replaced on my 280SE 4.5, at idle the engine wouldn't get hot enough for the auxiliary fan to come on.

After driving home on the freeway for an hour in 90 degree weather, I pulled in the garage, and the temp got up to about 190 degrees (I have a 190 degree temp switch), and the electric fan came on.

JMela · #33 08-12-2010, 05:25 PM

Quote:

Originally Posted by suginami

I can give an "amen" to this.

My 280SE 4.5 would start to get hot at idle. The hydraulic fan was turning at idle, but it wouldn't pull enough air to make a difference.

I had mine changed, and what a difference. The engine temp stays around 180 degrees now.

Take a rolled up newspaper and stick it in the fan blades. If the fan stops = fan clutch is shot.