Starter Motor Troubles
 

My starter motor has shorted. The resistance from the hot lead to ground is
something like 0.5 ohms. If I press the contacts on the switch that the
solenoid hits, the resistance goes to about 3.5 ohms.

I connected the starter (clamped in my vise) with jumper cables to a known
good battery, and all I get are sparks. the solenoid will pull if I push it
closer to the armature, but it will not fire on its own.

I took the starter apart, and there is a short from the power connection to
any of the four brushes. Logic says the brushes on the ground side should be
an open circuit, or at least high resistance.

I still have my starter out on the bench, and I need confirmation that I
tested it well.

Re: Starter Motor Troubles
 

On Mon, 25 Oct 2004 17:57:20 UTC "CRWLR" <beerman@yahoo.com> wrote:

> My starter motor has shorted. The resistance from the hot lead to ground is
> something like 0.5 ohms. If I press the contacts on the switch that the
> solenoid hits, the resistance goes to about 3.5 ohms.
>
> I connected the starter (clamped in my vise) with jumper cables to a known
> good battery, and all I get are sparks. the solenoid will pull if I push it
> closer to the armature, but it will not fire on its own.
>
> I took the starter apart, and there is a short from the power connection to
> any of the four brushes. Logic says the brushes on the ground side should be
> an open circuit, or at least high resistance.
>
> I still have my starter out on the bench, and I need confirmation that I
> tested it well.

Sounds like awinding short or maybe the contacts shorted to the case.
Either way, figure it's toast.

--
Will Honea

Re: Starter Motor Troubles
 

On Mon, 25 Oct 2004 17:57:20 UTC "CRWLR" <beerman@yahoo.com> wrote:

> My starter motor has shorted. The resistance from the hot lead to ground is
> something like 0.5 ohms. If I press the contacts on the switch that the
> solenoid hits, the resistance goes to about 3.5 ohms.
>
> I connected the starter (clamped in my vise) with jumper cables to a known
> good battery, and all I get are sparks. the solenoid will pull if I push it
> closer to the armature, but it will not fire on its own.
>
> I took the starter apart, and there is a short from the power connection to
> any of the four brushes. Logic says the brushes on the ground side should be
> an open circuit, or at least high resistance.
>
> I still have my starter out on the bench, and I need confirmation that I
> tested it well.

Sounds like awinding short or maybe the contacts shorted to the case.
Either way, figure it's toast.

--
Will Honea

Re: Starter Motor Troubles
 

On Mon, 25 Oct 2004 17:57:20 UTC "CRWLR" <beerman@yahoo.com> wrote:

> My starter motor has shorted. The resistance from the hot lead to ground is
> something like 0.5 ohms. If I press the contacts on the switch that the
> solenoid hits, the resistance goes to about 3.5 ohms.
>
> I connected the starter (clamped in my vise) with jumper cables to a known
> good battery, and all I get are sparks. the solenoid will pull if I push it
> closer to the armature, but it will not fire on its own.
>
> I took the starter apart, and there is a short from the power connection to
> any of the four brushes. Logic says the brushes on the ground side should be
> an open circuit, or at least high resistance.
>
> I still have my starter out on the bench, and I need confirmation that I
> tested it well.

Sounds like awinding short or maybe the contacts shorted to the case.
Either way, figure it's toast.

--
Will Honea

Re: Starter Motor Troubles
 

Sure sounds like a legit test to me.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

CRWLR wrote:
>
> My starter motor has shorted. The resistance from the hot lead to ground is
> something like 0.5 ohms. If I press the contacts on the switch that the
> solenoid hits, the resistance goes to about 3.5 ohms.
>
> I connected the starter (clamped in my vise) with jumper cables to a known
> good battery, and all I get are sparks. the solenoid will pull if I push it
> closer to the armature, but it will not fire on its own.
>
> I took the starter apart, and there is a short from the power connection to
> any of the four brushes. Logic says the brushes on the ground side should be
> an open circuit, or at least high resistance.
>
> I still have my starter out on the bench, and I need confirmation that I
> tested it well.

Re: Starter Motor Troubles
 

Sure sounds like a legit test to me.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

CRWLR wrote:
>
> My starter motor has shorted. The resistance from the hot lead to ground is
> something like 0.5 ohms. If I press the contacts on the switch that the
> solenoid hits, the resistance goes to about 3.5 ohms.
>
> I connected the starter (clamped in my vise) with jumper cables to a known
> good battery, and all I get are sparks. the solenoid will pull if I push it
> closer to the armature, but it will not fire on its own.
>
> I took the starter apart, and there is a short from the power connection to
> any of the four brushes. Logic says the brushes on the ground side should be
> an open circuit, or at least high resistance.
>
> I still have my starter out on the bench, and I need confirmation that I
> tested it well.

Re: Starter Motor Troubles
 

Sure sounds like a legit test to me.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

CRWLR wrote:
>
> My starter motor has shorted. The resistance from the hot lead to ground is
> something like 0.5 ohms. If I press the contacts on the switch that the
> solenoid hits, the resistance goes to about 3.5 ohms.
>
> I connected the starter (clamped in my vise) with jumper cables to a known
> good battery, and all I get are sparks. the solenoid will pull if I push it
> closer to the armature, but it will not fire on its own.
>
> I took the starter apart, and there is a short from the power connection to
> any of the four brushes. Logic says the brushes on the ground side should be
> an open circuit, or at least high resistance.
>
> I still have my starter out on the bench, and I need confirmation that I
> tested it well.