[TR] Overdrive Solenoids aftermarket

[TERRY SMITH]

Thank you, Randall.  Maybe that's the problem.  I had added a modern two prong mini 10 amp fuse.  Don't remember why, but I thought the amp was in the 3 to 5 range, but that must not be for pull in.  I'll try switching to a slo-blo fuse at 8 amp too and see what happens.

Although...typically the fuse blows after driving for some time in OD.  And when I had the old stock solenoid and the 10 amp fuse system, it ran years with now problem.  In any case, a different fusing is easiest to try!

Terry

Thanks!
> On March 9, 2017 at 10:42 PM Randall <TR3driver at ca.rr.com> wrote:
> 
> 
> > So...I had the overdrive tranny rebuilt winter before last, and darned if
> > it hasn't been blowing fuses continually since.
> 
> What fuse are you using?  The original OD circuit on a TR3A had no fuses to
> blow.
> 
> > What are people's experience with aftermarket solenoids?
> 
> I bought a pair of them on eBay almost 20 years ago.  First one lasted about
> 10 years, the second one seems to still be working fine after about 3 years.
> 
> Never did blow the 8 amp slo-blo fuse I added, just wouldn't engage the OD.
> The contacts under the end cover appeared to be burned until they wouldn't
> make good enough contact to carry the 20 amps or so it takes for the
> solenoid to pull in.  The bad connection had caused enough heat to partially
> melt things and spoil the temper of the contact arm.
> 
> I tried adding a diode to help the contacts live longer, but in retrospect I
> wired it wrong so it probably won't help.
> 
> Randall
>