Just changed the upper radiator hose on my 1992 achieva with the 2.3L Quad 4 HO. When warming it up i noticed the coolant fan not turning on. I can here what sounds like the relay click on and off, but the fan wont turn on and even with the AC turned on it does the same thing. Does the fan have the relay built into it or is it separate? This car has 219,000 miles on it and the head was replaced at 53,000. Please help me!