Hi,
Yes that's what I meant.
If you leave the fan disconnected, I understand the fault does not occur?
Did you place the capacitor between gnd and the LM35 signal wire?
Are the capacitors as close to the LM35 as possible.
Tom.... 
Hi,
Yes that's what I meant.
If you leave the fan disconnected, I understand the fault does not occur?
Did you place the capacitor between gnd and the LM35 signal wire?
Are the capacitors as close to the LM35 as possible.
Tom....