Today's Message Index:
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1. 09:22 AM - Starter fuse blew x3 (David Saylor)
2. 09:50 AM - Re: Starter fuse blew x3 (C&K)
3. 10:57 AM - Re: Starter fuse blew x3 (David Saylor)
4. 11:08 AM - Re: Starter fuse blew x3 (David Saylor)
5. 12:46 PM - Re: Starter fuse blew x3 (C&K)
6. 04:51 PM - Re: Starter fuse blew x3 (user9253)
Message 1
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| Subject: | Starter fuse blew x3 |
My starter solenoid fuse keeps blowing. The solenoid coil circuit also
powers a Slick-Start. The fuse has blown three times.
It worked fine for 12 years. About a year/100hrs ago I did a lot of
re-wiring. The fuse has blown three times now in the last 5 hours.
First time I just replaced the fuse and it worked for about 5 starts.
Second time it failed mid-rotation. I replaced the fuse and the starter
solenoid. The new solenoid remedied a starter hesitation issue that was
tolerable but noticeable. Also, the old relay has something rattling
inside; the new one does not.
After replacing the solenoid I had one very nice, rapid spin-up and start.
On the next attempt the fuse was blown. That makes three fuses.
The system worked fine with a 5A fuse for 100 hours after the rewire. The
last fuse was a 15A. At this point it really seems like a short. It
wouldn't be that hard to just rewire the whole circuit.
Can someone suggest anything I might be missing?
--Dave
Message 2
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| Subject: | Re: Starter fuse blew x3 |
That is a common occurrence with many starters if the main solenoid
contacts don't make immediate good contact. The high current (25 amp?)
pull in coil stays energized long enough to pop the fuse. With clean
contacts the high current coil stops flowing current when the contacts
close leaving the low current coil to keep the solenoid closed.
Cleaning or replacing the solenoid contacts is required if that is what
is happening.
Ken
On 22-Jan.-22 12:21 p.m., David Saylor wrote:
> My starter solenoid fuse keeps blowing. The solenoid coil circuit
> also powers a Slick-Start. The fuse has blown three times.
>
> It worked fine for 12 years. Abouta year/100hrs ago I did a lot of
> re-wiring. The fuse has blown three times now in the last 5 hours.
>
> First time I just replaced the fuse and it worked for about 5 starts.
>
> Second time it failed mid-rotation. I replaced the fuse and the
> starter solenoid. The newsolenoid remedied a starter hesitation
> issue that was tolerable but noticeable. Also, the old relay has
> something rattling inside; the new one does not.
>
> After replacing the solenoid I had one very nice, rapid spin-up and
> start. On the next attempt the fuse was blown. That makes three fuses.
>
> The system worked fine with a 5A fuse for 100 hours after the rewire.
> The last fuse was a 15A. At thispointit really seems like a short.
> It wouldn't be that hard to just rewire the whole circuit.
>
> Can someone suggest anything I might bemissing?
>
> --Dave
Message 3
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| Subject: | Re: Starter fuse blew x3 |
Thanks Ken. Do you mean the contacts in the solenoid attached to the
starter? I've replaced the starter in the past but never serviced the
contacts. I can do that.
The fuse that's blowing isn't in that circuit though. I should clarify my
terms. The fuse that's blowing powers the starter contactor. I called it
the starter solenoid. The starter contactor coil has dedicated external
terminals for the coil and isn't associated with the high current starter
or solenoid wiring. Cleaning up the solenoid contacts is doable but I
think my terminology muddied the waters. Or do you think starting current
is getting pulled through the starter relay coil?
On Sat, Jan 22, 2022 at 9:53 AM C&K <yellowduckduo@gmail.com> wrote:
>
> That is a common occurrence with many starters if the main solenoid
> contacts don't make immediate good contact. The high current (25 amp?)
> pull in coil stays energized long enough to pop the fuse. With clean
> contacts the high current coil stops flowing current when the contacts
> close leaving the low current coil to keep the solenoid closed.
> Cleaning or replacing the solenoid contacts is required if that is what
> is happening.
> Ken
>
> On 22-Jan.-22 12:21 p.m., David Saylor wrote:
> > My starter solenoid fuse keeps blowing. The solenoid coil circuit
> > also powers a Slick-Start. The fuse has blown three times.
> >
> > It worked fine for 12 years. About a year/100hrs ago I did a lot of
> > re-wiring. The fuse has blown three times now in the last 5 hours.
> >
> > First time I just replaced the fuse and it worked for about 5 starts.
> >
> > Second time it failed mid-rotation. I replaced the fuse and the
> > starter solenoid. The new solenoid remedied a starter hesitation
> > issue that was tolerable but noticeable. Also, the old relay has
> > something rattling inside; the new one does not.
> >
> > After replacing the solenoid I had one very nice, rapid spin-up and
> > start. On the next attempt the fuse was blown. That makes three fuses.
> >
> > The system worked fine with a 5A fuse for 100 hours after the rewire.
> > The last fuse was a 15A. At this point it really seems like a short.
> > It wouldn't be that hard to just rewire the whole circuit.
> >
> > Can someone suggest anything I might be missing?
> >
> > --Dave
>
>
Message 4
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| Subject: | Re: Starter fuse blew x3 |
Now I realize in two messages I've called it the starter solenoid, the
starter contactor, and the starter relay. Per the Z diagrams I mean the
starter contactor. Sheesh.
On Sat, Jan 22, 2022 at 10:56 AM David Saylor <saylor.dave@gmail.com> wrote:
> Thanks Ken. Do you mean the contacts in the solenoid attached to the
> starter? I've replaced the starter in the past but never serviced the
> contacts. I can do that.
>
> The fuse that's blowing isn't in that circuit though. I should clarify my
> terms. The fuse that's blowing powers the starter contactor. I called it
> the starter solenoid. The starter contactor coil has dedicated external
> terminals for the coil and isn't associated with the high current starter
> or solenoid wiring. Cleaning up the solenoid contacts is doable but I
> think my terminology muddied the waters. Or do you think starting current
> is getting pulled through the starter relay coil?
>
>
> On Sat, Jan 22, 2022 at 9:53 AM C&K <yellowduckduo@gmail.com> wrote:
>
>>
>> That is a common occurrence with many starters if the main solenoid
>> contacts don't make immediate good contact. The high current (25 amp?)
>> pull in coil stays energized long enough to pop the fuse. With clean
>> contacts the high current coil stops flowing current when the contacts
>> close leaving the low current coil to keep the solenoid closed.
>> Cleaning or replacing the solenoid contacts is required if that is what
>> is happening.
>> Ken
>>
>> On 22-Jan.-22 12:21 p.m., David Saylor wrote:
>> > My starter solenoid fuse keeps blowing. The solenoid coil circuit
>> > also powers a Slick-Start. The fuse has blown three times.
>> >
>> > It worked fine for 12 years. About a year/100hrs ago I did a lot of
>> > re-wiring. The fuse has blown three times now in the last 5 hours.
>> >
>> > First time I just replaced the fuse and it worked for about 5 starts.
>> >
>> > Second time it failed mid-rotation. I replaced the fuse and the
>> > starter solenoid. The new solenoid remedied a starter hesitation
>> > issue that was tolerable but noticeable. Also, the old relay has
>> > something rattling inside; the new one does not.
>> >
>> > After replacing the solenoid I had one very nice, rapid spin-up and
>> > start. On the next attempt the fuse was blown. That makes three fuses.
>> >
>> > The system worked fine with a 5A fuse for 100 hours after the rewire.
>> > The last fuse was a 15A. At this point it really seems like a short.
>> > It wouldn't be that hard to just rewire the whole circuit.
>> >
>> > Can someone suggest anything I might be missing?
>> >
>> > --Dave
>>
>>
>>
>>
>>
Message 5
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| Subject: | Re: Starter fuse blew x3 |
David
If you are sure that fuse is not supply power to the small wire going
into the starter then what I said doesn't apply.
I'm referring to starters that have an internal solenoid and a small
wire to energize that solenoid. It is the contacts inside the starter
that I'm referring to. On my Nippondenso starter those contacts blacken
a bit and cause the fuse to intermittently start popping about every 10
years or so which sounded like what you were describing.
Ken
On 22-Jan.-22 2:07 p.m., David Saylor wrote:
> Now I realize in two messages I've called it the starter solenoid, the
> starter contactor, and the starter relay. Per the Z diagrams I mean
> the starter contactor. Sheesh.
>
> On Sat, Jan 22, 2022 at 10:56 AM David Saylor <saylor.dave@gmail.com>
> wrote:
>
> Thanks Ken. Do you mean the contacts in the solenoid attached to
> the starter? I've replaced the starter in the past but never
> serviced the contacts. I can do that.
>
> The fuse that's blowing isn't in that circuit though. I should
> clarify my terms. The fuse that's blowing powers the starter
> contactor. I called it the starter solenoid. The starter
> contactor coil has dedicated external terminals for the coil and
> isn't associated with the high current starter or solenoid
> wiring. Cleaning up the solenoid contacts is doable but I think
> my terminology muddied the waters. Or do you think starting
> current is getting pulled through the starter relay coil?
>
>
> On Sat, Jan 22, 2022 at 9:53 AM C&K <yellowduckduo@gmail.com> wrote:
>
> <yellowduckduo@gmail.com>
>
> That is a common occurrence with many starters if the main
> solenoid
> contacts don't make immediate good contact. The high current
> (25 amp?)
> pull in coil stays energized long enough to pop the fuse. With
> clean
> contacts the high current coil stops flowing current when the
> contacts
> close leaving the low current coil to keep the solenoid closed.
> Cleaning or replacing the solenoid contacts is required if
> that is what
> is happening.
> Ken
>
> On 22-Jan.-22 12:21 p.m., David Saylor wrote:
> > My starter solenoid fuse keeps blowing. The solenoid coil
> circuit
> > also powers a Slick-Start. The fuse has blown three times.
> >
> > It worked fine for 12 years. Abouta year/100hrs ago I did
> a lot of
> > re-wiring. The fuse has blown three times now in the last 5
> hours.
> >
> > First time I just replaced the fuse and it worked for about
> 5 starts.
> >
> > Second time it failed mid-rotation. I replaced the fuse and the
> > starter solenoid. The newsolenoid remedied a starter
> hesitation
> > issue that was tolerable but noticeable. Also, the old relay
> has
> > something rattling inside; the new one does not.
> >
> > After replacing the solenoid I had one very nice, rapid
> spin-up and
> > start. On the next attempt the fuse was blown. That makes
> three fuses.
> >
> > The system worked fine with a 5A fuse for 100 hours after
> the rewire.
> > The last fuse was a 15A. At thispointit really seems like
> a short.
> > It wouldn't be that hard to just rewire the whole circuit.
> >
> > Can someone suggest anything I might bemissing?
> >
> > --Dave
>
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Message 6
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| Subject: | Re: Starter fuse blew x3 |
According to this document:
http://diamondaviators.net/downloads/maintenancemanuals/SlickStart%20Booster%20Maintenance%20Manual.pdf
SlickSTART receives input power from the switched positive terminal of
the starter motor, and should be activated only when the starter motor is
engaged. During engine start, SlickSTART draws a maximum of 5 amperes
-
In other words, the SlickStart should be connected to the downstream side of the
starter contactor,
NOT to the start switch. So, remove the SlickStart from the small contactor terminal
and connect the
SlickStart to the big fat downstream starter contactor terminal through a new inline
7.5 amp fuse.
Each electrical load should have its own fuse. If two or more loads are connected
to a single fuse,
then if the fuse blows, the cause will not be known.[/b]
--------
Joe Gores
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=505787#505787
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