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10-08-2009
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#1 |
 
Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,169
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Odd Fan behavior
I mentioned this before but I was looking into it again last night
I have a fan with a mind of its own it seems. At first i thought it was Fan2 but it is Fan1. Sometimes on start within 5-10 seconds it will run, even when the car is cold (sitting for a few days) Last night it did not turn on right away but did soon after the car was started. When i got home form using the car I connected my laptop to it, there was no fan requests of any type and the ECM was not commanding the fans (1 or2) on, yet fan #1 was running. The only thing I can think of is that possibly the ground wire for the relay is shorted to ground some where, I need to spend more time looking into it, but I thought I would post to see if anyone else had some ideas on the positive side, at least the fans runs instead of not running at all I also did check the CTS and it seems to be reporting the correct Temp as well
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1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978 |
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10-08-2009
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#2 |
  
Join Date: May 2007
Location: Peoria, AZ
Posts: 9,155
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Re: Odd Fan behavior
Jeff my guess would be the relay as well.
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GOLDCYLON - 91 ZR-1 #2014 GOLDCYLON - 90 ZR-1 #2794, 4L60e (Formerly Schrade's) GOLDCYLON - 11 CTS-V Arizona State Director  91 WHITE/BLACK #2014. 380 P&P&PCed,Ported Heads, Jeal Long tubes, Corsa Exhaust/FIKSE FM-5s /LED TLs, LED Headlights, Front Wilwood 6 piston narrowlite calipers and rear Wilwood caliper street shop mod,CNCed Coolant Pipes,TPI Cvr,Filter cover,Stainless Bolts, DRM/DOM PROM /ZFDOC mod build #102,DRLs,BMAD with stainless Debris Screen,Coplan Air Blaster, Pioneer APP Radio 4,Brey-Krause HB,Sub Bar,Fire extinguisher seat mount,DRM Coilovers,LEDs everywhere,Compass mirror (orange),V1 DIC hidden display, Homelink sun visor, Carbon Fiber top x3 and APSIS Carbon Fiber interior, APSIS CF Steering Wheel/NAPA Leather, Banski trailing arms, Guldstrand front suspension,urethane bushings from Prothane (total suspension) ZFDoc drive shaft safety loop, raptor shift light (orange),AO engineering louver front plate, Console seat cushion, 96CE seats with black custom Sheepskins, ss billet catch can,Viper remote entry/alarm,Cragar Rear Louvers,LED side louver lights, Dewitts Radiator with SPAL fans and a Woods 160 T-Stat 90 RED/BLACK #2794. 4L60e Automatic Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless Headers, Corsa Exhaust, SAN Secondaries and Haibeck PROM, Exotic Muscle Coil overs, LED Interior Lights, LED Tail Lights, LED Headlights, 94 Sport seats with black custom Sheepskins , Cragar rear louvers, GS Front calipers, Banski Trailing arms, APSIS Carbon Fiber steering wheel, Front and Rear Baer Eradispeeds, DRLs, Guldstrand front suspension,urethane bushings from Prothane (total suspension), Dewitt's Raditor with Dual SPAL fans and a Haibeck 170 T-Stat 11 RED/GREY CTS-V |
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10-08-2009
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#3 |
 Join Date: Mar 2006
Location: Innsbrook, Missouri
Posts: 1,727
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Re: Odd Fan behavior
oops. wrong post, what with you from chicago and all
i thought you were talking about the Cubs. 
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10-08-2009
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#4 | |
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Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,169
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Re: Odd Fan behavior
Quote:
also with the relay unplugged, the control side of relay lights up the test light
__________________
1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978 |
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