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Message started by teelzebub on 02/15/07 at 14:05:39

Title: wierd electrical fault.
Post by teelzebub on 02/15/07 at 14:05:39

Hi,can anybody throw some light on this one? Savage been stood for 4 years,wouldn,t start on start button but would fire up with direct jump lead to starter motor.also noticed that when button depressed there is a short delay of 2-3 seconds and very occasionally engine would rotate and start.I have intoduced direct 12v feed into starter relay/solenoid from clutch cut out supply wire and she will always start up-however that has now led to another fault ,namely in approx 1 in 5-6 start ups the starter keeps turning while engine runs!! i,ve already destoyed one starter motor, HELP anybody- i think it could be a duff starter solenoid (unlikely) or a faulty decomp cotrol relay or decomp solenoid??? ???

Title: Re: wierd electrical fault.
Post by vroom1776 on 02/15/07 at 15:06:24

it's definitly not the decomp solenoid that's amking the starter keep turning over.

Here's an extremely simplified wiring diagram that my help.

http://i55.photobucket.com/albums/g152/vroom1776/Simplfied_parts2.jpg?t=1171580843

you may have a faulty starter switch. A lot of older bikes have had these go bad, usually resulting in nonstarting.

bad starter relay or decomp control is likely, IMO, or a short somewhere there.

so you've shorted +12V to the Y/G going into the decomp control? that should make it keep trying to start all the time, assuming the start switch is out of the loop. if it's on the other side of the clutch lever, every time you pull the clutch lever, it should try and start, then. I can imagine that if the start swithc is in the loop, and you have a lousy switch (and return spring), a bump could occassionaly try to start the bike in the scenario you have described.

Title: Re: wierd electrical fault.
Post by Greg_650 on 02/15/07 at 21:26:44

You can rule out the decomp solenoid. That won't cause that problem....something else maybe, but not that.

Disconnect the starter motor and check the starter relay output with a meter and the starter button. See if the relay contacts remain closed or stick when you push and release the start button.

And since it's been sitting up for a while, disconnect and clean all the contacts. A little CRC contact cleaner might help.

Title: Re: wierd electrical fault.
Post by justin_o_guy on 02/15/07 at 22:50:15

I have an intermittent start problem myself. Start button works, or, not. I've taken it apart, cleaned contacts & bypassed sidestand & clutch interlocks. I KNOW it's the start circuit. I put an emergency start button under the frame rail under the right front of the seat. There is a red wire under the seat & I ran it to a switch & then to the decomp controller. The decomp controller fires the starter after a short time. I used a switch out of the front of a dead dvd player, a microswitch of minute current carrying capacity & it has worked flawlessly. I do have it stuck in 2 fingers off of a blue nitrile glove, still on the circuit board & tie wrapped to the frame. This wont solve a starter problem, but will sure let ya know which end O th bike has the problem. Gregs answer looks more like the answer than mine, I just tossed that in just in case.

Title: Re: wierd electrical fault.
Post by teelzebub on 02/16/07 at 00:12:19

Thanks for your advice -all of you!! will let you know how it goes! Cheers. 8)

Title: Re: wierd electrical fault.
Post by slavy on 02/16/07 at 06:44:41

There are 2 possible reasons for Your problem:
1. the starter is getting power all the time when the engine is running. You can check if this is true if You start the engine and disconnect the starter "hot" wire. If the starter stops spinning, chase the problem in the starting circuit.
If this doesn't solve the problem, go to :
2. Starter clutch.

Title: Re: wierd electrical fault.
Post by vroom1776 on 02/16/07 at 07:36:55

I was thinking more about this...

Do you here the starter relay click?

Title: Re: wierd electrical fault.
Post by verslagen1 on 02/16/07 at 09:07:39

I noticed in my push start technique that when the clutch is let out the starter shuts off. Makes sense that it should.

Title: Re: wierd electrical fault.
Post by fsmidt on 02/27/11 at 04:26:05

little kick,,,(4 years)

i have same problem, switched a ground cable with hot wired cable.

anyway the starter keeps turning when i connect the plus cable to battery.

is it possible the starterrelais only let power through to the starter and don`t switch to neutral.
if i smack it with a hammer would it be ok again or ..