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Registered
Join Date: Dec 2020
Location: Los Angeles, CA
Posts: 10
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Fan Relay Issue
Hey everyone I’m having an issue with my fans come on with key off. When you open the key fans go into high speed. The previous owner had some switches set up for the fan which I disabled that’s when this problem came up. I know the relay pins are not supposed to have ground which the AC pin and TS do. I tried disconnecting the high pressure switch, thermoswitch( even replaced this). The issue is still there. I looked over Clark’s and the workshop manual but can’t seem to figure out where the ac pin under the fan relay goes to. If anyone can help me out I’d like to find out where these wires trace to so I can follow it because I’m having difficulty finding it
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12-03-2024, 09:49 AM
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In the Fires of Hell.....
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Year of your car? I assume it's a 951...
Always a good idea to add your car to your "garage" here.
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PCA Instructor: '88 951S - with LBE, Guru chips, 3Bar FPR, 1.3mm shimmed WG, 3120 lbs, 256 RWHP, 15 psig boost |
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12-05-2024, 06:05 PM
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In the Fires of Hell.....
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From your other posts it seems that you have an '86 951.
It is normal for the cooling fans to come on for a time after you turn the car off and take the key out. They just need to shut off before draining the battery  Here are the relevant parts of the wiring diagram for the cooling fans: 
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PCA Instructor: '88 951S - with LBE, Guru chips, 3Bar FPR, 1.3mm shimmed WG, 3120 lbs, 256 RWHP, 15 psig boost Last edited by kdjones2000; 12-14-2024 at 02:42 AM.. |
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12-06-2024, 06:55 AM
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Registered
Join Date: Oct 2006
Location: Laguna Vista
Posts: 2,203
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This may help.
Sox  
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"Little problems always come back and bring bigger friends with them". 1986 951"MADDOG" black Dual port WG, 4 port control valve with EBC |
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12-12-2024, 09:22 AM
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944 Turbo
