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Automotive/98 blazer electrical issue

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Expert: A. Rowe - 12/20/2010


Question
I have recently had some problems with my 4x4 system, but now I am blowing my IGN A fuse under the hood.  I can not find what this fuse controls.  All I know, is that I have a short that deals with this fuse and can not figure it out.  Any suggestions?  Thanks

Answer
Hi Jamie!

The IGN A fuse should come off of the Ignition switch. My books aren't being very precise about exactly what all it controls. One diagram says that there is a 40 amp fuse for the starter relay (located near the fuse) and starter. Another shows that the only 40 amp fuse in the whole truck is for IGN A. Sorry I can't be 100% positive with an answer for this. If when the fuse blows the only thing that happens is the engine wont crank, chances are it is the starter circuit causing a problem. If other things stop working, let me know and I'll try to trace it down a little further.



-----Aaron  

Automotive

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A. Rowe

Expertise

I can usually answer how to fix automotive problems or at least how to troubleshoot the problem on most cars and trucks. I specialize in mechanical and electrical work, but do occasional paint/body/fabrication work. I'm from the U.S., so, I might not be able to answer specific questions from 'non-North American available' vehicles.

Experience

I am an ASE certified master automotive technician for 15 years with a degree in automotive technics and business management. For the last 20+ years I've worked on just about everything with an engine or wheels. I have owned and operated an automotive repair business since 1993. I can also help with information about Pa. state inspection and the Pa. vehicle code.

Organizations
Formerly held a NASCAR license and built/maintained race cars.

Education/Credentials
Degree in Automotive techics and business management, as well as ASE certified master technician, PA state inspection license, completed trainings from Bendix, Bear, Moog, PDQ and countless others.

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