1994 Winnebago is blowing ECM IGN fuse

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I have a 1994 Winnebago Adventurer with a P 30 chassis and a Throttle Body Injected Chevy 454 engine. The other day I was changing spots in the camp ground Im staying at so I started it up she started right up I moved it to the new Spot and shut it down. I realised I needed to level it out so I started it up again and backed her up a foot or so, Stopped the engine to put the blocks in front of my tires, Go try to start and it wouldnt start. It turns over I get good oil pressure but it will not start. I started trouble shooting and found the ECM-IGN 10 amp fuse was blown. Subsequently it keeps on blowing fuses when replaced. I looked for a grounded wire and couldnt find any.. Does anyone have any ideas?

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That fuse only appears one place in the manual that I could find. And that was a detail drawing of just the fuse and idle control solenoid going to a ground contact in the PCM.

And the silkscreens showing fuse locations in the various panel configurations never do show it but my rig has that fuse.

That IGN designation on the fuse may indicate it's part of that general purpose IGN circuit that supplies a bunch of miscellaneous stuff when the key comes on. They are nortious for being overloaded and burning up ignition switches. Maybe start looking in that area. Perhaps a few wires got melted together or something.

Or maybe somebody added a circuit or two into that fuse and those wires are now messed up. Look for some of those quick connect things shoved into that fuse holder.

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Thanks More to see. I tried and it still blew. Another site said to try the LO pressure switch It still blew. Someonw said to disconnect the PCM and I cant figure out how to get it out of th bracket. Its inbetween the Steering Column and the E-brake bracket. I am really frustrated with this fiasco..

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That fuse isn't very well documented in the manual but it appears to supply power to the Idle Speed Control Solenoid.

That is located under the two injectors on your intake manifold on the passenger side and slightly to the rear.

Maybe unplug the connector and see if it has shorted to ground. But if the windings have burned up without shorting to ground then it could still cause heavy current to be drawn since the PCM grounds one end of it at times when controlling the idle function. That would be a direct short to ground.

Hope this helps. Good luck.