Dual cooling fan problems:(
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Heel & Toe
Joined: Aug 2018
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Dual cooling fan problems:(
Okay first of all, i recently got an 85 corvette and am trying to find everything problematic so i can get it smogged and found both the aux fan and main fan do not function properly. I know both the fan motors are operational because ive seen them both on before. Upon further inspection i followed the aux fan switch wire down near the starter were it has been cut and connected to some other wire, i also found some thicker wires that have the cores exposed. I tried testing the main fan by unplugging the ac pressure switch, ( i didnt know which one it was so i unplugged both individually at seperate times), neither fans came on. Also near the aux fan relay there is a green w/ white stripe that has been cut and isnt connected to anything, atleast on that end. And lastly i found a melted plug that was dangling on the passenger side of motor but everything seems to be plugged in? Any help is greatly appreciated
Thread Starter
Heel & Toe
Joined: Aug 2018
Posts: 19
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Thread Starter
Heel & Toe
Joined: Aug 2018
Posts: 19
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Thread Starter
Heel & Toe
Joined: Aug 2018
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i know for sure its not the temp sensor i check that out today trying to figure out why the fans werent coming on, is your connector have a single wire or two? Mine has been replaced and has one. At first i thought the unconnected plug was the large plug was the large ac connector on the line but that is also plugged in,.
Safety Car
Joined: Sep 2004
Posts: 3,953
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From: Mission Viejo CA
That's not the right shape for the knock sensor. And the knock sensor only has one wire. I'm going to guess it's for the high pressure safety switch for the a/c system. What colors are the wires?
Thread Starter
Heel & Toe
Joined: Aug 2018
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i believe you can see the connector youre referring to on the ac line in the picture
Safety Car
Joined: Sep 2004
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From: Mission Viejo CA
Thread Starter
Heel & Toe
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thanks
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Heel & Toe
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Drifting
Joined: Mar 2013
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From: Venice Cali.
That heater valve setup is modified, the valve should be near the firewall, so your a/c connection is kind of below the valve. The aux fan is a single pin connector, looks like a/c to me also.
Safety Car
Joined: Sep 2004
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From: Mission Viejo CA
Thread Starter
Heel & Toe
Joined: Aug 2018
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What are you calling the "high pressure line"? The larger diameter line that is shown in your photo with the switch with connector attached, is your LOW PRESSURE LINE. The high pressure line will be at the bottom of your evap coil housing. The low pressure line exits the TOP of the evap coil housing. The switch you're looking for will be someplace on that smaller diameter tube that goes to the bottom of your evap coil housing.
