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IGN-A 40 amp fuse keep blowing

Discussion in 'Chevy Trucks' started by 515CUSTOMS, Feb 20, 2010.

  1. 515CUSTOMS

    515CUSTOMS Junior Member
    Messages: 28

    I just went out to plow and you try to start the truck and it blows the fuse. for the ignition switch. I just put a new blower motor today but I dont think it has anything to do with it. i tryed unhooking the blower motor,plow,trailer lights and no change. What else can i try.

    Thanks Joe/515CUSTOMS
     
  2. RichG53

    RichG53 PlowSite.com Addict
    Messages: 1,135

    The YEAR and MAKE of truck sure dose help with getting Answers !!!!!
     
  3. 515CUSTOMS

    515CUSTOMS Junior Member
    Messages: 28

    Sorry it was a late night. its a 96 chevy 1500 4x4 with the 5.7 with 260,000 miles
     
  4. 2COR517

    2COR517 PlowSite Fanatic
    Messages: 7,115

    Pull the fuel pump and starter relays. See if it still does it.
     
  5. 515CUSTOMS

    515CUSTOMS Junior Member
    Messages: 28

    I tryed swiching the starter and ac relay, and nothing
     
  6. 2COR517

    2COR517 PlowSite Fanatic
    Messages: 7,115

    Do not switch relays around. Pull them out, leave them out, do not put them back in. No relays in, turn the key to run/start. Does it still blow the big 40 amp fuse?
     
  7. ontario026

    ontario026 Senior Member
    Messages: 228

    I helped a friend a few weeks back to try and diagnose a no-start condition on a diesel 96 ish chev dually, I found one of those big fuses blown, and I think it was the ign a, if I remember correctly... I left, he replaced the fuse later, kept blowing, took it to the shop and I think he said they ended up replacing the starter... do you have a service manual for the truck? if so follow the wiring diagrams, see what is connected to the IGN A fuse, it will be one of those components..
    Matthew
     
  8. RichG53

    RichG53 PlowSite.com Addict
    Messages: 1,135

    Did it do any thing different before it started to blow the fuse ????? Any thing !!!!!!
     
  9. 515CUSTOMS

    515CUSTOMS Junior Member
    Messages: 28

    It was the signal wire at the starter. just 3 or 4 inches up from the starter. it was all melted and must have been shorting on something.
     
  10. 2COR517

    2COR517 PlowSite Fanatic
    Messages: 7,115

    Glad you found it.