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Old 05-31-2011, 12:14 PM   #7
MT-2500
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Re: Need advice, 2000 suburban won't start

Quote:
Originally Posted by pfirstenhammer View Post
I determined that the problem is a blown fuse. I replaced it, now its blowing again. The fuse is called IGN C. It controls the ignition switch, fuel pump, PRND321 display, and Crank according to the manual. My buddy says that the fuel pump is kicking in when the ign. switch is turned on, but I haven't checked it. I replaced the yesterday and turned the key to auxilliary to roll down the window to see what i could hear and when i turned the key back to the neutral postition the fuse blew. Not sure what crank controls, if thats crankshaft postition sensor or if that's to actuate the starter. It hardly seems as if the PRND321 display would be a problem.

Any thoughts from anyone on this?
Ign fuse c feeds ign switch.
Ign switch does not have neutral only transmission does.

What position on switch does it blow?

What sub and what engine and transmission and 2 0r 4W do you have?

I would unplug ing switch and with a fused jumper jump starter circuit first and see if any shorts
If none and starter circuit jump runs starter .
Then move on to checking acc and run circuits which should be mostly fused between them and ign switch.

Has any wiring or fuse repair or fuse jumpered or any thing been done or replaced on it?
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