I have had a problem with my 87 V20 4x4 not starting. I have replaced
the battery, starter and ignition switch and it still won't start. What
am I overlooking? I didn't see any fuses in the fuse block that looked
like they were involved in starting. There is voltage to the headlights
but not to the dash when turning the key.
I would stop trying if I didn't love this old truck so much. Thanks in
Nope, no dash lights. No responce from at all while turning the key;
Acc, Run, Start, nothing. I will say, when this all started, I was in
the truck about the fire it up when, the volt gauge started jumping
around. From no voltage to max voltage a few times, then nothing.
Any thought about voltage regulator? Could that have gone bad and take
the fusable link with it?
Voltage regulator couldn't make the gauge jump up if it was not running. If
it jumped when off it probably was a spike as the fusable link burned out.
If there was something shorted it would have drawn a lot of current and as
the fusable link blew it would have probably caused a spike from the high
current flow stopping suddenly. I would measure voltage from all the points.
Check for voltage to all of the fuses not as much for a blown fuse but to
see which circuits are missing voltage. Remember to turn on key so they
should all have voltage present.
Is the fusible link on the starter switch to starter motor wire in the
cab or in the engine compartment? It seems to be well hidden, after
looking and testing for some time I cannot find it. Will keep trying
but, any help would be appreciated. Thanks.
OK, what's a V20?
You said you have had a problem. What fixed it before? Or did it get worse?
Was it raining? Or damp conditions? What about the plug going thru the
How about brake lights? Flashers?
please reply to bargerw NO @ SPAM bellsouth.net and remove the NOSPAM
Got it!! The fusible links were fine. Frustrated, I disconnected the
wires from the starter and pulled them out of the harness all the way
back to the fuseblock. The wire that feeds voltage to the fuseblock had
corroded so badly that it broke off. So, no starter signal, no fuel
pump, no fan, no radio.
Well, it's not running just yet. After a couple days looking I found
the correct terminal end that would seat into that monster plug. Now,
I'm trying to clean all the light green powder from that location on the
fuse block where that plug connects. I called around about a new fuse
block but, the dealership doesn't have any info before 1992 and the
salvage yards I've been to don't have the years that would work. I'm
hoping that the block is something that I can take apart and replace
that terminal socket for a better connection.
Ok, I fixed the broken wire in the plug that brings power to the fuse
block as well as the connector within the fuse block that said wire
couples with. I finally have power to the starter switch but now it
goes dead when I turn the key to run or start. I do have power in acc.
It is a brand new switch and just to see, I tested the old switch with
the same result. I've been told it's probably the ACSU/ECU. Which
seems to make sense, electrical short kills ECU. What do you guys
think? Is there a way to test my ACSU?
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