stockgp Posted July 30, 2007 Report Share Posted July 30, 2007 i'm stumped. after i upgraded the big 3 again, the cooling fan on the driver's side is always on. i can rewire it to make it work like it's supposed to, but i'd like to know why it's doing this. i didn't short anything. i ran the new wires to the same spots i ran the last ones. any suggestions? Quote Link to comment Share on other sites More sharing options...
Robby1870 Posted July 30, 2007 Report Share Posted July 30, 2007 hmmm. Try swapping the relay for that fan with the one for the other fan to rule out a bad relay (although I doubt that's it). Could be the coolant temp sensor in the lower intake is bad, but, from my experience, when they go bad, they will give a "cold" reading to the ECM. Quote Link to comment Share on other sites More sharing options...
stockgp Posted July 30, 2007 Author Report Share Posted July 30, 2007 forgot to mention i already did that. and to clarify, the fan is on whether the ignition is or not. as soon as i hook the grounds back up, the fan comes on. Quote Link to comment Share on other sites More sharing options...
slick Posted July 31, 2007 Report Share Posted July 31, 2007 Thats really odd. Didn't accidently disconnect something else? Quote Link to comment Share on other sites More sharing options...
stockgp Posted July 31, 2007 Author Report Share Posted July 31, 2007 not that i can see. i can't even imagine what i could have disconnected that would have that effect Quote Link to comment Share on other sites More sharing options...
slick Posted July 31, 2007 Report Share Posted July 31, 2007 I can only think that something is being grounded, completing the circuit, for the fans to kick in. You only touch the main ground and positive cables, correct? Quote Link to comment Share on other sites More sharing options...
19Cutlass94 Posted July 31, 2007 Report Share Posted July 31, 2007 Did you get the right ground above the radiator? Maybe you got another groung instead of the negative battery ground. I know on my car theres two grounding spots there.... Quote Link to comment Share on other sites More sharing options...
stockgp Posted July 31, 2007 Author Report Share Posted July 31, 2007 only main positives and negatives, yes. 19cutlass94, i didn't even touch that ground. i left all the factory grounds in place, and ran my new grounds elsewhere Quote Link to comment Share on other sites More sharing options...
19Cutlass94 Posted July 31, 2007 Report Share Posted July 31, 2007 Well then Im out of ideas Quote Link to comment Share on other sites More sharing options...
z34Phoenix Posted August 2, 2007 Report Share Posted August 2, 2007 either the fan is getting power at the fan wires them selfs or the input for the relay is getting constant power... my guess is you have a short somewhere in the wiring. Quote Link to comment Share on other sites More sharing options...
shyguy164 Posted August 5, 2007 Report Share Posted August 5, 2007 Did you get the right ground above the radiator? Maybe you got another groung instead of the negative battery ground. I know on my car theres two grounding spots there.... The right ground? Another ground? Ground is ground. Now whether or not it's switched is another thing. Quote Link to comment Share on other sites More sharing options...
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