[DeTomaso] starter electrical system problem

[Asa Jay Laughton]

The initial description sounds like a bad firewall solenoid to me too. 
They can get so much corrosion from the arcing inside that they finally
just don't make proper contact.  Been there, done that; eventually tore
the thing apart to find the contactor disk was basically gone and could
not longer make contact.  It's an inexpensive part, just replace it first. 

Asa Jay

Asa Jay Laughton, MSgt, USAFR, Retired
& Shelley Marie
Spokane, WA
******************************     
http://www.racingagainstautism.com
http://www.teampanteraracing.com
http://facebook.com/racingagainstautism


On 9/21/2013 10:28 PM, Boyd Casey wrote:
> I just (since may) replaced two starters and it turned out that the problem
> was the solenoid on the fire wall was cracked and operated intermittently .
> So I could have saved hundreds of dollars and hours of frustration for a
> part that cost around 12 bucks!
> The starter won't effect the firewall solenoid but the solenoid will
> prevent the starter from cranking.
> Boyd
>
> On Saturday, September 21, 2013, Sean Korb wrote:
>
>> They're so inexpensive and available you might just want to replace the
>> relay anyway.  Many  of the parts stores only carry the later style now but
>> it's easily modified and works well.
>>
>> sean
>>
>>
>> On Sat, Sep 21, 2013 at 11:23 PM, Pantdino <pantdino at aol.com<javascript:;>>
>> wrote:
>>
>>> Based on the pitch of the sound and where it seems like it is coming
>> from,
>>> it really sounds like a relay on the firewall rather than anything on the
>>> motor.
>>>
>>> Would a starter failure cause the relay to buzz? If so, why?
>>>
>>> Jim
>>>
>>>
>>> -----Original Message-----
>>> From: Pantdino <pantdino at aol.com <javascript:;>>
>>> To: MikeLDrew <MikeLDrew at aol.com <javascript:;>>; detomaso <
>> detomaso at poca.com <javascript:;>>
>>> Sent: Sat, Sep 21, 2013 2:27 pm
>>> Subject: Re: [DeTomaso] starter electrical system problem
>>>
>>>
>>>
>>> I'll have to crawl under there and have someone engage the starter while
>> I
>>> listen.
>>> The good news is the car was on the lift for changing the brake fluid
>> when
>>> this
>>> happened, :-)
>>>
>>>
>>>
>>>
>>> -----Original Message-----
>>> From: MikeLDrew <MikeLDrew at aol.com <javascript:;>>
>>> To: pantdino <pantdino at aol.com <javascript:;>>; detomaso <
>> detomaso at poca.com <javascript:;>>
>>> Sent: Sat, Sep 21, 2013 2:24 pm
>>> Subject: Re: [DeTomaso] starter electrical system problem
>>>
>>>
>>>
>>> In a message dated 9/21/13 14 22 8, pantdino at aol.com <javascript:;>writes:
>>>
>>>
>>>
>>> My perception is this:
>>>
>>>  When engine was shut down one piston had finished its intake stroke and
>>> was
>>> sitting at the bottom with a cylinder full of gas vapor above it.
>>>  When you crank the engine the piston moves up.  Plugs fire at BTDC, no?
>>>  So the
>>> plug fires before the piston is at TDC and the force of the explosion
>>> stops the
>>> piston and crankshaft at that point and the engine stops turning for a
>>> second
>>> until the starter moves the crank again.  I'm pretty sure this is what
>> has
>>> been
>>> happening, because with the ignition switched off the starter spins the
>>> engine
>>> fine.
>>>
>>>
>>>
>>>
>>>>>> Ah, an interesting theory!   If you've proven it empirically, then it
>>> becomes
>>> more than just a theory.
>>>
>>> Your starter, however, is still a POS, and now it's a *broken* POS. :>)
>>>
>>> Mike
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>>
>>
>> --
>> Sean Korb spkorb at spkorb.org <javascript:;> http://www.spkorb.org
>> '65,'68 Mustangs,'68 Cougar,'78 R100/7,'60 Metro,'59 A35,'71 Pantera #1382
>> "The more you drive, the less intelligent you get" --Miller
>> "Computers are useless.  They can only give you answers." -P. Picasso
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