unfused ignition has constant 12v.... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

elf w/capital T · 08-21-2011, 04:08 PM

i was trying to get my heater to turn on but keeps blowing fuses, so i got a 60amp fuse, silver shell (not a plastic one) and well tried with that, blower still didnt blow and NOW my ignition unfused slots have contant power.... how and why???

**truckdude239** · 08-21-2011, 04:11 PM

umm you fried something in the fuse block, never and i mean never put a higher amp fuse in a spot ment for a lower fuse if the fuse keeps blowing ti means something is wrong now you looking at a short somewhere

cableguy0 · 08-21-2011, 05:34 PM

If the fuse kept blowing you had/have a short.The blower motor is probably bad. By using a 60 amp fuse you probably just smoked the ignition switch. Your lucky you didnt cause a fire. UNhook the battery asap and start looking for the crispy parts. I would first check the ignition switch and its wiring. From there go to the fuse block itself.

08-21-2011, 04:08 PM	#1
elf w/capital T Registered User Join Date: Feb 2011 Location: North Carolina Posts: 993	unfused ignition has constant 12v.... i was trying to get my heater to turn on but keeps blowing fuses, so i got a 60amp fuse, silver shell (not a plastic one) and well tried with that, blower still didnt blow and NOW my ignition unfused slots have contant power.... how and why???

08-21-2011, 04:11 PM	#2
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,217	Re: unfused ignition has constant 12v.... umm you fried something in the fuse block, never and i mean never put a higher amp fuse in a spot ment for a lower fuse if the fuse keeps blowing ti means something is wrong now you looking at a short somewhere __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

08-21-2011, 05:34 PM	#3
cableguy0 Senior Member Join Date: Apr 2000 Location: Delta,Pa Posts: 14,950	Re: unfused ignition has constant 12v.... If the fuse kept blowing you had/have a short.The blower motor is probably bad. By using a 60 amp fuse you probably just smoked the ignition switch. Your lucky you didnt cause a fire. UNhook the battery asap and start looking for the crispy parts. I would first check the ignition switch and its wiring. From there go to the fuse block itself. __________________ Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member.



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