Re: (ET) I5 reverse only, no forward

[Charlie <medievalist gmail com>]

Thanks for the suggestions, guys.

I have replaced the forward/reverse switch, but I noted at the time
that the spade lugs on it were pretty badly corroded.  I'm going to
try to find a way to clean them up and see if that makes a difference.
I will report back!

--Charlie

On Fri, Jun 18, 2021 at 8:32 PM Chad Bush <bushman165s aol com> wrote:
>
> Charlie,
>
> Sounds like you have some high-resistance contacts or corroded 
> connections somewhere in the harness. You should check the Start switch 
> in the pedal assembly, the forward-reverse switch mentioned by Harold, 
> and then the molex connections for those circuits. Sometimes those pins 
> can get corroded, loose/worn, and cause intermittent issues like this. 
> I've even had issues with the old relay connectors fatiguing from heat, 
> along with the fuse blocks.
>
> Good luck,
>
> Chad Bush
>
> On Jun 18, 2021 3:37 PM, Charlie <medievalist gmail com> wrote:
>
> Hi All
>
>   I've had an intermittent problem with the I5 for about five years
> now.  I've got the very last version of the electronics, no edge
> connectors, no transistors.
>
>   To try to solve it, one by one I have replaced all the contactors
> (yes, ALL of them) and rebuilt all the open frame relays.  Each time I
> replaced something, it would start working perfectly... for a little
> while, but then it would start acting up again a few weeks later.
>
>   Basically, when I go into reverse, sometimes it won't go forwards
> again.  I can pound on various parts of the tractor, or switch it back
> into reverse a few times, and sometimes the problem goes away.
> Sometimes it does not go away until I replace a contactor or a relay
> or something, then it'll work for a while.
>
>   It's occasionally been stuck in reverse for a week or two, and I've
> had to cut an acre of grass in reverse...  not much fun with a foot
> throttle and a front deck.
>
>   Do any of you have any suggestions for where to look next?  I
> cleaned and tightened up the big molex connectors already (and that
> fixed it for almost a week).
>
> --Charlie
> 1973 GE I5 Elec-trak
>
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