Starting problems - The 1947 - Present Chevrolet & GMC Truck Message Board Network

EZ4U2C · 06-14-2012, 12:44 PM

I have a problem, I'm putting my truck back together. My son tighten the battery cable end too much and broke it, easy fix I got a new one. The problem starts here, before it we starting but now the horn relay under the dash is humming and getting HOT. I double check the wiring and don't see anything wrong. If I unplug it, the horn relay, the motor will not do anything, but if I plug it back up, it acts like it wants to turn over but doesn't. Can anyone help or may know whats going on?

Thanks.

ChevLoRay · 06-14-2012, 01:40 PM

Sounds like you have a floating ground. I'd check all of the grounds and be sure that they're electrically correct. What happens at night? Do your headlights glow dimly, or maybe one side works okay and the other doesn't?
Did the horn work correctly before the cable broke? What did you do with the pigtail on the new negative cable? Was there a place for it to go to before?

EZ4U2C · 06-14-2012, 02:16 PM

Thanks, there no headlights in the truck. Just got the motor in and fired it up. Then we left it along for a week. I'll check to make sure the wires for the head light are not touching any where. You think if they are touching would cause it? Also I don't have the horn hooked up yet either. But it has cranked up and ran since we put the motor in. Could the horn relay have went bad?

06-14-2012, 12:44 PM	#1
EZ4U2C Registered User Join Date: Dec 2005 Location: North Carolina Posts: 257	Starting problems I have a problem, I'm putting my truck back together. My son tighten the battery cable end too much and broke it, easy fix I got a new one. The problem starts here, before it we starting but now the horn relay under the dash is humming and getting HOT. I double check the wiring and don't see anything wrong. If I unplug it, the horn relay, the motor will not do anything, but if I plug it back up, it acts like it wants to turn over but doesn't. Can anyone help or may know whats going on? Thanks. __________________ God loved me so much he gave me John 3:16 Buy American and bring our jobs back home. Trust what you believe in and believe in what you trust. Don't blame the gun, Blame the person who made you use it! _____________________________________________ 1970 swb 2002 Harley Davidson Road King Classic 2004 Dodge 4x4

06-14-2012, 01:40 PM	#2
ChevLoRay Old Skool Club Join Date: Jun 2001 Location: Benton, AR "The Heart of Arkansas" Posts: 10,880	Re: Starting problems Sounds like you have a floating ground. I'd check all of the grounds and be sure that they're electrically correct. What happens at night? Do your headlights glow dimly, or maybe one side works okay and the other doesn't? Did the horn work correctly before the cable broke? What did you do with the pigtail on the new negative cable? Was there a place for it to go to before? __________________ Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was.

06-14-2012, 02:16 PM	#3
EZ4U2C Registered User Join Date: Dec 2005 Location: North Carolina Posts: 257	Re: Starting problems Thanks, there no headlights in the truck. Just got the motor in and fired it up. Then we left it along for a week. I'll check to make sure the wires for the head light are not touching any where. You think if they are touching would cause it? Also I don't have the horn hooked up yet either. But it has cranked up and ran since we put the motor in. Could the horn relay have went bad? __________________ God loved me so much he gave me John 3:16 Buy American and bring our jobs back home. Trust what you believe in and believe in what you trust. Don't blame the gun, Blame the person who made you use it! _____________________________________________ 1970 swb 2002 Harley Davidson Road King Classic 2004 Dodge 4x4



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