Strange Electrical problems

First thing I would check for is a bad ground to those circuits.

Check the fuse links at the starter solenoid

Whitelightning

On 11 Dec 2006 09:21:06 -0800, tgrahl@earthlink.net wrote:


Is this an auto. trans. truck  with the pushbutton overdrive override
in the end of the shift lever?

Yes, push button overdrive and push button 4x4.

C4 - EOD trans, which is also being affected by the lack of electrical.
  The trans shifts hard and only when it "wants to".   The signal is
apparently not going to the trans.  At first I suspected the PSOM but I
don't think that would affect the other electrical components that are
not working.


samstone@aol.com wrote:

On 12 Dec 2006 06:20:13 -0800, tgrahl@earthlink.net wrote:


 I used my 93 full sized bronco one day to help a friend locate his
new summer trailer in a  family campsite. After the manditory
thanks for the help beer ( s) while returning to my site in camp,  I
noticed the same type of electrical problems you described on your
first post.  I  thought - no good deed goes unpunished - but as it
turned out I found a blown open fuse in the dash fusebox. So  no
biggie.  Word got out how smoothly my bronco worked for moving
trailers that I soon was meeting all the new people in camp and this
same fuse popped almost everytime. After the fuse was replaced
i never had a problem till the next trailer I moved. I looked for
pinched wire harnesses or  anything I could thought might be the cause
of the fuse opening and I was sure it was related to the trailer weigh
on the hitch.  ( nothing found ) I did go to the junker yard and
stocked up on the 10 amp. fuse though. This fuse popped on me at least
ten times all while moving trailers.  Then one day,  just as I parked
and tilted the steering wheel up  but before turning the key off I
noticed the magic stuff that makes all electronic / electrical stuff
work   (  smoke ) whisping out of the steering column. Talk about your
fast exit from the truck ( i did twist the key off as I left  ).  
 Not being shy about fixing things I found the cause of the smoke to
be burning insolation on one of the wires that lead to/from that
little overdrive override button. I did a smoke test while working
on it  and  guess what ,  yup ,  that same  fuse blew.  :-)
 I'm good at repairing things with wires and did a dandy job putting a
fix on that wire. The whole shifter removes rather easily and I had
the right tools and things on hand to make the repair and got the
Bronco back on the road at  no cost - just  my time.
 A few days later I got a replacement shifter / wires from the junker
yard but I have not replaced it.  ( couple years ago )
 To this day  that fuse hasn't popped again. The cause of it
blowning open was NOT  the weight of the trailer on the hitch
but of  that little rubbed  bare wire  grounding out as I titled the
steering wheel up  and  down while I got in / out of the truck
while checking the trailers position / overall situation.
The fuse  was number 17 ( 10 amp ) in my fuse box ,  might be the same
in yours. I'm  not  saying  this is your trucks problem but  the
crazy electrical statis sounds the same. My Bronco does  NOT  have
the air bag in the wheel , I mention this as there are added concerns
when working near these and yours might have the air bag , i guess.
 

there is no such thing as a "C4 - EOD" trans.

--
Steve Barker