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CC Advertisers
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07-30-2013, 02:52 PM
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CC Member
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Join Date: Aug 2002
Location: Richmond,
VA
Cobra Make, Engine: Superformance Mk III / Windsor platform
Posts: 450
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Not Ranked
electrical system dead
Turn key - absolutely nothing happens. Won't crank, no lights, no horn, no fans, no nothing. Behaves as if the battery is not connected. I have charged the battery and it is good. I have checked the battery ground to the frame just below the battery box and it is good. Ground connection from the starter to the frame is good. Any suggestions on what/where to check next. Is there any sort of major relay or main fuse that could cause this? Ignition switch bad?
Thanks for any help.
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07-30-2013, 05:04 PM
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CC Member
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Join Date: Aug 2007
Location: Carlsbad,
Ca
Cobra Make, Engine: SPF 2932 with 438 Lykins Motorsports engine. Previous owner of FFR 5452.
Posts: 2,616
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Not Ranked
Check the hot leads on the firewall mounted solenoid. Use a continuity tester to see if the hot lead is in fact hot.
__________________
Jim
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07-30-2013, 06:10 PM
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CC Member
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Join Date: Jul 2013
Cobra Make, Engine: Backdraft Racing
Posts: 1
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Not Ranked
Had the same issue a few months ago...turned out to be faulty ignition switch. First check would be to turn key past the on position and go as far as the key will turn and see if the dash starts coming to life. If that doesn't do anything try bypassing switch.
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07-30-2013, 06:42 PM
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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
We are looking into this issue offline. Since he has no headlights or brake lights, the problem is the main power feed from the battery. He had already replaced the battery, and verified the main chassis ground at the battery. So we are now checking for power track, first at the firewall mounted solenoid, then for power at the main fuse, then thru the fuse. Next will be the feed to the AMP meter, and thru the meter.
On a SPF you always have brake lights and headlights and fans when the car is not running. (With a few exceptions on selected chassis #'s on the brake lights - but that is another story) We'll follow the current path and find the fault. He will post his findings....
__________________
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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07-30-2013, 07:00 PM
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CC Member
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Join Date: Aug 2002
Location: Richmond,
VA
Cobra Make, Engine: Superformance Mk III / Windsor platform
Posts: 450
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Not Ranked
Quote:
Originally Posted by Blas
We are looking into this issue offline. Since he has no headlights or brake lights, the problem is the main power feed from the battery. He had already replaced the battery, and verified the main chassis ground at the battery. So we are now checking for power track, first at the firewall mounted solenoid, then for power at the main fuse, then thru the fuse. Next will be the feed to the AMP meter, and thru the meter.
On a SPF you always have brake lights and headlights and fans when the car is not running. (With a few exceptions on selected chassis #'s on the brake lights - but that is another story) We'll follow the current path and find the fault. He will post his findings....
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Blas - you are totally a knight is shining armor! Pulled the amp meter and worked the spade connections on and off the terminals a few times. Bingo! That puppy is now hot as a firecracker! I have some Caig Dexit at my shop.
I'll polish the terminals lightily with a dollar bill and put a light spray of the contact cleaner on the connections before I reassemble tomorrow. Success.
Thank you, sir!
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07-30-2013, 08:12 PM
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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
Excellent. Should the problem return. I would remove the heat shrink tubing on the two wires connecting to the AMP meter and check the crimps on the metal connectors to the wires. Since you jiggled them, you may have temporarily re-established contact between a bad wire and its female connector end. You can easily replace the shrink tubing on the wire and connector....
But you are most likely ok....
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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10-04-2017, 10:39 PM
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CC Member
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Join Date: May 2014
Cobra Make, Engine: Superformance, 351 W
Posts: 10
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Not Ranked
Bump as I think I’m having similar issue. Went for a drive Saturday came home and turned car off in driveway to go open garage came back and car would not start. No light or fuel pump when I turn the key. I can get 12.5 v at the regulator up on the firewall as well as on the alternator and starter. I’m confused on where the main fuse is by looking at manual I got with the car as I don’t see it in the fuse area inter the dash in “area 4” I have a 2007 SPF.
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