I was having a problem where my fan wouldnt turn on unless I turned on the AC........i was driving home from school and my car started to heat up......so I turned on the AC and let it cool down......it did..and I turned it off again......it started to heat up again and i turned the AC on........and it wouldnt cool down at all........it eventually got way past red line...and I was able to make it home (I was speeding the entire way so enough air could get into the radiator to cool everything down...but it was still in/near the red area) When I got home....opened the hood.......the coolant was boiling....turned on the AC to cool it down (with car off) and the fan wouldnt come on.....what do I need to check?

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http://users.ticnet.com/mult68
1992 Teal Camaro RS
T-Tops
305 TBI V8
Open air element
3" Flowmaster Exhaust System w/Quad Tips
Aiwa CD/Mp3 player
10 Disc CD Changer
Rockford Fosgate Speakers
SLP Headers Coming
Dynomax High Flow Cat Coming
More to come.

 

The fan switch is located in the passenger side cylinder head, between cylinders 6 & 8. Grounding that wire, with the ignition on, should turn the fan on, as well.

Tim