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flightlead404 flightlead404 is offline
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Join Date: May 2015
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Originally Posted by T77911S View Post
the yellow relay is DE-ENERGIZED to run the pumps. so the coil can be bad and the pumps run, even with the engine off but key on.
it would have to be either bad metal used for the contacts or probably the solder joints in the relay.
I would pull the original apart and clean the contacts with 600 paper, resolder all the joints, same with the speed relay under the seat. very famous for bad solder joints. I bet there are a lot sitting in shops trash piles that could easily be repaired.

I removed the speed relay and soldered the wires together in my 930 and I put in an MSD with a rev limiter, or you could uses the rotor limiter.

as far as the original yellow relay I would like to get a bad one to see what is really failing, better be careful with that wish, mine could be next.
I'm pretty sure that recently while I was searching for threads on the green wire that I found an old thread (maybe 10 years old) that discussed exactly that. Bob Ashlock might have been a participant on that thread. Not in the turbo of forum.
Old 01-05-2017, 10:00 AM
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