Any poor connection can reduce the cranking power of the starter. The
easiest way to check for poor connections is to measure the voltage
across the starter (terminal and case) when turning over the car, and
then measure the battery voltage at it's terminals when turning over the
car. Ideally, they should be the same, but never are. the larger the
difference between them, the more power is being wasted. You can track
the power lost in any paticular connection, including the solenoid, by
measuring the voltage across is during cranking. The voltage drop across
the solenoid should be low.
"Martin A. Secrest" wrote:
>
> George:
>
> I would have agreed with you, intuitively, but my GT6's recent slow cranking
> problems were cured only once I replaced the original solenoid. Isn't it
> possible that a poor solenoid internal connection could prevent the full
> necessary current draw for turning the starter? Is this another Curry Law?
>
> --
> Martin Secrest
> GT6, TR6
>
> Geo Hahn wrote:
>
> > "steven@cravetechnology.com" wrote:
> >
> > > My '62 TR4 starter is behaving a bit different over the last week. On
> > > the first cranking, it'll crank real slow... second cranking, it's usually
> > > back to regular
> > > speed....
> >
> > I rather doubt it is the solenoid as that tends to be all or nuthin' -- not
> > likely to cause slow cranking.
> >
> > To quote "Curry's First Law of Electrical Diagnosis": Check the grounds.
> >
> > Geo Hahn
> > 59 TR3A
> > Tucson, AZ
--
George Richardson
Wyvern - '57 Triumph TR3, TS15559LT -
http://www.merlingroupinc.com/tr3.htm
Griffin - '71 Triumph Stag - undergoing restoration
Pikachu - '75 Triumph TR6 - undergoing repair
Kitty - '83 Jaguar XJ6 Vanden Plas - Daily Driver
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