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07-19-2015, 03:13 PM
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CC Member
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Join Date: Jul 2014
Location: Sioux Falls,
SD
Cobra Make, Engine: CSX 4145, aluminum body and Shelby aluminum FE stroker
Posts: 121
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Not Ranked
electric fans not working
Sorry that I have to (again) show my ignorance, regarding my own car, but I was hoping somebody could point me in the right direction. When taking my car out recently, I headed into our downtown area, with slow traffic. My temperature gauge started climbing into uncomfortable territory, and I checked to be sure my front-mounted electric fans were spinning, and they were not. Once the car was out of traffic and started getting some air through the radiator, the temps dropped, but until I figure out my fan problem, I am limited to driving only at speeds above 10 mph.
My car is a CSX4000 series (#4145). I would imagine that the front twin fans are all wired pretty much the same on these. Are they on a temperature switch? I couldn't find one, but wasn't sure where all to check. I found a wire coming from the harness on the passenger-side fan wiring, which was grounded to the frame and was loose, but fixing that didn't solve anything. I don't see any blown fuses.
Any suggestions?
Thanks in advance for any help.
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07-19-2015, 03:24 PM
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CC Member
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Join Date: Jul 2005
Location: Virginia Beach, Va & Port Charlotte, Fl.,
Posts: 2,287
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Not Ranked
I would NOT drive it at all until it's fixed! An all aluminum FE does not like excessive coolant temps. Just because it doesn't lift the radiator cap doesn't mean you're operating it in a safe zone.
__________________
Too many toys?? never!
Last edited by undy; 07-19-2015 at 03:28 PM..
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07-19-2015, 03:26 PM
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CC Member
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Join Date: Jan 2015
Location: Beaufort S.C.,
SC
Cobra Make, Engine: FFR MkII
Posts: 57
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Not Ranked
The fans have to have both positive and negative. Find the positive and check with a multimeter or a 12v test light at the fan. If voltage there - the fan is bad . Trace the positive back to either a fuse or a temp switch. Check for voltage there. If a temp switch - it should be adjustable, see if adjusting turns on the fan.
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07-19-2015, 04:15 PM
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CC Member
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Join Date: Mar 2012
Location: DC,
MD
Cobra Make, Engine: Everett Morrison
Posts: 90
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Not Ranked
Be careful as the fans can instantly turn on and they
Can be dangerous,
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07-21-2015, 12:16 AM
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CC Member
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Join Date: Jul 2014
Location: Sioux Falls,
SD
Cobra Make, Engine: CSX 4145, aluminum body and Shelby aluminum FE stroker
Posts: 121
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Not Ranked
Thank you all for your comments.
As far as not operating the car until this is fixed- no need to worry. I have no reason to doubt the accuracy of my temperature gauges. I will be certain to keep it in the "safe zone". As far as checking the power at the fan- I will do that, but keep in mind that BOTH of these fans are not kicking on, so I doubt that BOTH fan motors died at the same time.
As far as tracing the wiring- that is where the problem is. The wiring is all covered, and runs together with wires for other accessories, so I was hoping that somebody here familiar with CSXs would be able to chime in and just point me in the right direction as far as where the temp switch is, or if they have encountered this problem before. OR, if anybody here has a wiring diagram from a CSX...
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07-21-2015, 07:04 AM
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CC Member
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Join Date: Sep 2002
Cobra Make, Engine: SPF#0760
Posts: 3,407
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Not Ranked
You have a PM.
Blas
__________________
Wiring Diagrams: SPF MKII, MKIII, GT40, CSX7000, CSX8000, Corvette Grand Sport, and Shelby Sebring, Bondurant & Cinema Tribute Cars.
Owner’s Manuals: SPF MKII, CSX7000, CSX8000, Sebring, Bondurant, Cinema Tribute Cars $ GT40’s..
Large, easy to read and trace schematics with part numbers, wire colors, wire gauge, fuses, and electrical upgrade information. Trouble-shooting and replacement part numbers for those roadside repair adventures.
SPFWiringDiagrams@Comcast.net
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07-21-2015, 09:32 PM
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CC Member
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Join Date: Jul 2014
Location: Sioux Falls,
SD
Cobra Make, Engine: CSX 4145, aluminum body and Shelby aluminum FE stroker
Posts: 121
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Not Ranked
Many thanks to Blas for his help! He is helping me troubleshoot the problem.
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07-25-2015, 09:31 PM
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CC Member
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Join Date: Jul 2014
Location: Sioux Falls,
SD
Cobra Make, Engine: CSX 4145, aluminum body and Shelby aluminum FE stroker
Posts: 121
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Not Ranked
Ok, so with the help of Blas, we determined the problem was a bad relay. I would like to stick with an original-style LUCAS relay. Is there a vendor on here that carries these? I found a couple of options on Ebay, but I wasn't confident in the authenticity or condition of the product.
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07-26-2015, 09:53 PM
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CC Member
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Join Date: Jul 2014
Location: Sioux Falls,
SD
Cobra Make, Engine: CSX 4145, aluminum body and Shelby aluminum FE stroker
Posts: 121
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Not Ranked
Anybody? Anybody?
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07-27-2015, 06:28 AM
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CC Member
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Join Date: Sep 2002
Cobra Make, Engine: SPF#0760
Posts: 3,407
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Not Ranked
I find them if I search online from parts suppliers. Some are overseas.
__________________
Wiring Diagrams: SPF MKII, MKIII, GT40, CSX7000, CSX8000, Corvette Grand Sport, and Shelby Sebring, Bondurant & Cinema Tribute Cars.
Owner’s Manuals: SPF MKII, CSX7000, CSX8000, Sebring, Bondurant, Cinema Tribute Cars $ GT40’s..
Large, easy to read and trace schematics with part numbers, wire colors, wire gauge, fuses, and electrical upgrade information. Trouble-shooting and replacement part numbers for those roadside repair adventures.
SPFWiringDiagrams@Comcast.net
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07-27-2015, 11:04 AM
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CC Member
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Join Date: Jul 2014
Location: Sioux Falls,
SD
Cobra Make, Engine: CSX 4145, aluminum body and Shelby aluminum FE stroker
Posts: 121
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Not Ranked
OK, Blas- thanks. I just figured they were a common-enough item for the people on this forum, that one of the businesses that sponsor the forum would have them. Apparently not.
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07-27-2015, 12:26 PM
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CC Member
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Join Date: Jan 2009
Location: Las Vegas,
NV
Cobra Make, Engine: Shelby CSX4005LA, Roush 427IR
Posts: 5,610
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Not Ranked
Quote:
Originally Posted by SFSDFGT
Ok, so with the help of Blas, we determined the problem was a bad relay. I would like to stick with an original-style LUCAS relay. Is there a vendor on here that carries these? I found a couple of options on Ebay, but I wasn't confident in the authenticity or condition of the product.
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Call Tony at Shelby American.
__________________
Cheers,
Tony
CSX4005LA
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07-27-2015, 08:22 PM
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CC Member
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Join Date: Jul 2014
Location: Sioux Falls,
SD
Cobra Make, Engine: CSX 4145, aluminum body and Shelby aluminum FE stroker
Posts: 121
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Not Ranked
Quote:
Originally Posted by twobjshelbys
Call Tony at Shelby American.
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Thanks, Tony. I called and left a message for Tony there at Shelby American. |
07-27-2015, 09:25 PM
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CC Member
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Join Date: Jan 2009
Location: Las Vegas,
NV
Cobra Make, Engine: Shelby CSX4005LA, Roush 427IR
Posts: 5,610
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Not Ranked
Quote:
Originally Posted by SFSDFGT
Thanks, Tony. I called and left a message for Tony there at Shelby American.
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He'll help you. He sent me pieces and parts for free for my Cobra. I think he charged me about $10 for my broken Lucas fuel pump switch (same as fans etc).
Of course you know that anything Lucas will need replacement sooner rather than later. It's the nature of the beast. But hey, it's part of the experience!
__________________
Cheers,
Tony
CSX4005LA
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07-28-2015, 05:06 AM
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Banned
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Join Date: Dec 2002
Location: New Jersey,
N.J
Cobra Make, Engine: Shelby Cobra CSX4206 aluminum body, original 1965 NASCAR 427 SO, Dual quads.
Posts: 3,897
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Not Ranked
Call Bill Andrews at HRE.1 516 378 5461.
__________________
U.S. Army Rangers. Leading travel agents to Allah.
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