Comments on: Why won’t my Corvette’s cooling fans turn on? http://www.corvettepartsblog.com/c4corvette/why-will-my-corvettes-cooling-fans-not-turn-on/ Corvette Parts Information, Technical Articles and more. Thu, 29 Jul 2010 17:30:42 -0400 http://wordpress.org/?v=2.9.2 hourly 1 By: Corvette Parts http://www.corvettepartsblog.com/c4corvette/why-will-my-corvettes-cooling-fans-not-turn-on/comment-page-1/#comment-11989 Corvette Parts Tue, 02 Feb 2010 22:11:29 +0000 http://www.corvettepartsblog.com/?p=530#comment-11989 Stephen, The factory fans do come on at 225, this cannot be lowered by a thermostat. If you want to lower the main fan temperature on a C4 Corvette it has to be done by either a chip in the ECM or programming on 1994-1996 Corvettes. You can also wire around to a switch. On 1984-1989 Corvettes with dual fans there is a temperature switch in the cylinder head that controls the front fan. Our <a href="http://www.zip-corvette.com/ProductDetails/ProductDetails.aspx?pid={290f1df3-887d-47d4-b5c2-07641958e6e3}" rel="nofollow">1984-1991 Low Temp Fan Switch Conversion Harness</a> will allow you to wire an extra ground wire to the main fan relay. When the switch hits its preset temperature it will ground the relay and turn the fan on early. Stephen,
The factory fans do come on at 225, this cannot be lowered by a thermostat. If you want to lower the main fan temperature on a C4 Corvette it has to be done by either a chip in the ECM or programming on 1994-1996 Corvettes. You can also wire around to a switch. On 1984-1989 Corvettes with dual fans there is a temperature switch in the cylinder head that controls the front fan. Our 1984-1991 Low Temp Fan Switch Conversion Harness will allow you to wire an extra ground wire to the main fan relay. When the switch hits its preset temperature it will ground the relay and turn the fan on early.

]]> By: Stephen http://www.corvettepartsblog.com/c4corvette/why-will-my-corvettes-cooling-fans-not-turn-on/comment-page-1/#comment-11773 Stephen Sat, 30 Jan 2010 15:53:19 +0000 http://www.corvettepartsblog.com/?p=530#comment-11773 The dealer replaced the fan motor and they come on at 225 degrees. The dealer says thats were the fans should come on but that is way to hot for me. We live in Florida, I am going to try a 160 degree thermostat, purple ice w/water and 1 gallon of 50/50, hopefully that will help. If any corvette owners know otherwise please let me know. Thanks Stephen The dealer replaced the fan motor and they come on at 225 degrees. The dealer says thats were the fans should come on but that is way to hot for me. We live in Florida, I am going to try a 160 degree thermostat, purple ice w/water and 1 gallon of 50/50, hopefully that will help. If any corvette owners know otherwise please let me know.
Thanks
Stephen

]]> By: Corvette Parts http://www.corvettepartsblog.com/c4corvette/why-will-my-corvettes-cooling-fans-not-turn-on/comment-page-1/#comment-8578 Corvette Parts Fri, 27 Nov 2009 18:35:40 +0000 http://www.corvettepartsblog.com/?p=530#comment-8578 Craig, It is very possible that your <a href="http://www.zip-corvette.com/GroupDetails/SubGroupResults.aspx?gid={81c46a32-1e1f-43e2-98b4-13b6b15c4842}&SearchType=_GROUP_SEARCH&GroupName=Heater+Core,+Evaporator+Core,+Water+Shut+Off+Valve&" rel="nofollow">Corvette's Hot Water Shut-off Valve</a> has gone bad. Craig,
It is very possible that your Corvette’s Hot Water Shut-off Valve has gone bad.

]]> By: Craig http://www.corvettepartsblog.com/c4corvette/why-will-my-corvettes-cooling-fans-not-turn-on/comment-page-1/#comment-8292 Craig Sun, 22 Nov 2009 01:00:29 +0000 http://www.corvettepartsblog.com/?p=530#comment-8292 What are some common reasons for my 1996 Corvette not blowing warm air? What are some common reasons for my 1996 Corvette not blowing warm air?

]]> By: Corvette Parts http://www.corvettepartsblog.com/c4corvette/why-will-my-corvettes-cooling-fans-not-turn-on/comment-page-1/#comment-3790 Corvette Parts Tue, 04 Aug 2009 13:46:17 +0000 http://www.corvettepartsblog.com/?p=530#comment-3790 John, The relay is mounted on the inner fender well on the drivers side, right in front of the battery. John,
The relay is mounted on the inner fender well on the drivers side, right in front of the battery.

]]> By: John Engle http://www.corvettepartsblog.com/c4corvette/why-will-my-corvettes-cooling-fans-not-turn-on/comment-page-1/#comment-3681 John Engle Thu, 30 Jul 2009 21:24:47 +0000 http://www.corvettepartsblog.com/?p=530#comment-3681 Where exactly is the cooling fan sensor on a 1985 Corvette? Finding all kinds of similar units but they are not like the replacement we bought. Where exactly is the cooling fan sensor on a 1985 Corvette? Finding all kinds of similar units but they are not like the replacement we bought.

]]> By: Christine Westy http://www.corvettepartsblog.com/c4corvette/why-will-my-corvettes-cooling-fans-not-turn-on/comment-page-1/#comment-1429 Christine Westy Sun, 03 May 2009 09:51:55 +0000 http://www.corvettepartsblog.com/?p=530#comment-1429 Excellent info, especially considering I am looking at getting a Corvette for my next car. Excellent info, especially considering I am looking at getting a Corvette for my next car.

]]> By: perry http://www.corvettepartsblog.com/c4corvette/why-will-my-corvettes-cooling-fans-not-turn-on/comment-page-1/#comment-50 perry Thu, 25 Dec 2008 17:28:47 +0000 http://www.corvettepartsblog.com/?p=530#comment-50 I had the same problem with my 1986 Corvette. I found out that I had a bad wire running from the battery cable. Perry Nassau, Bahamas I had the same problem with my 1986 Corvette. I found out that I had a bad wire running from the battery cable.

Perry
Nassau, Bahamas

]]> By: Debra http://www.corvettepartsblog.com/c4corvette/why-will-my-corvettes-cooling-fans-not-turn-on/comment-page-1/#comment-18 Debra Sat, 29 Nov 2008 16:15:48 +0000 http://www.corvettepartsblog.com/?p=530#comment-18 I had the same problem with my 1984 Corvette. I replaced the sensors, switch and fan motor. The problem was the temperature sending unit. I had the same problem with my 1984 Corvette. I replaced the sensors, switch and fan motor. The problem was the temperature sending unit.

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