Jack wrote:
> My 87 Dak is acting like the battery is weak, but it has a Sears
> Diehard, less than a year old, and all the cells are full and check out
> good with a specific gravity tester. The voltage at the battery is 14.5
> volts when idling and 13.25 volts after charging on a 10 amp charger. I
> cleaned both ends of the battery cable, at the starter, solenoid, engine
> ground and, of course, the battery. Now, after charging, the battery is
> good for maybe 4 or 5 starts! The only thing I can think of that might
> be at fault is the starter motor, but I never experienced a starter
> getting weak. They have always just burned out like a light bulb.
>
> Any thoughts?
>
> Thanks
> Jack
Well because of work and other pressing obligations I put off changing
the starter, but when I got stranded at Home Depot today I wasted no
time after getting a jump to pass by O'Reilly's on the way home and pick
up a rebuilt, while I left the engine running and sure enough, the
starter was the problem. The guy from AAA told me the battery was fully
charged and it barely cranked enough to start with his battery pack
hooked up. I knew all the connections were clean, so by this time there
was little doubt, actually, none.
Well, anyway after wrestling the old one out and installing the rebuilt
I put all the tools away, cleaned the grime off my hands and went out to
savor the joy of a fast cranking, quick starting engine. Bingo! it
started right up! Only problem was the starter kept cranking. I turned
the engine off but the starter kept cranking! SH#T!!! I popped the hood
and tried to yank off a battery cable, but I had cinched them both down
tight. I ran inside to get the 1/2 inch wrench to loose the bolt on the
cable. By this time it's dark and I didn't bring out the flashlight, so
I'm fumbling around doing this by feel. Finally got it loose and pulled
the cable off the post and the starter stopped spinning. whew!
So I put the cable back on the post, not knowing what to expect, but
nothing happened. I leave the hood up and the cable loose on the post
and go to try again, being ready to sprint back to the battery to pull
the cable if necessary, but this time the starter motor disengaged. I
tried it several more times with no drama. The engine started and the
starter disengaged every time. Cool, but not cool. I disconnect the
battery cable so as not to have to worry about the starter spontaneously
starting.
I go to Google and look up 'starter motor keeps cranking' and found this
not to be an entirely uncommon problem. The possible cause that appealed
to me the most was that a new or rebuilt starter has tolerances that are
tight, causing the solenoid not to disengage. This problem, I was lead
to believe, can work itself out as the starter does its work . I thought
maybe the minute and half that this one was cranking while I fumbled to
pull the battery cable might have done just that. I'm hoping that's the
case because that would mean no more work. But it seems just as likely
from the symptoms that the starter relay was stuck. But this has never
happened before, so I'm leaning toward the rebuilt starter as the source
of the problem. But tomorrow I will pull the relay and pop it open to
inspect the contacts for any sign of weld spots.
I'm assuming that the starter was cranking the engine after I turned the
key off and not just spinning. The fact that it continued for so long
cranking at a good solid rpm tells me I should have no starting problems
for quite a while. But I am going to disconnect the battery at night
until I feel comfortable that it won't spontaneously start :-)
I also see that this thread seemed to take on a life of its own after my
last post. I have some catch-up reading to do!
Jack