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Riding mower turns over even when key is off

Posted by Josh99 NJ (My Page) on
Sat, May 31, 14 at 13:24

Troy-Bilt GTX 2446

Tried to jump start it over the winter to plow some snow.

Now when I hook up the battery cables, the engine immediately starts to turn over, regardless of the key position. I am then able to turn the key on and it starts.

When I am done mowing, the engine still turns over even after the key is switched to off. I then disconnect the negative cable.

The battery terminals spark when they are connected.

I inspected and haven't found any damaged wires.

Any suggestions? or have I permanently damaged the electrical system?


Follow-Up Postings:

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RE: Riding mower turns over even when key is off

I can think of a couple different possibilities.

Disconnect the SMALL wire to the starter solenoid.
IF the problem disappears, the problem is a "stuck" solenoid. Replace. (you might be shorting to the BIG + cable there?)

Else, the key switch is bad-
OR
The wire from the S terminal of the key switch to the solenoid has shorted to a 12V supply.
This is the "small wire" mentioned previously.

I tend to think "stuck solenoid", since the safety switches should still prevent cranking unless the wire was shorted to 12V between the solenoid and the last safety switch.

This post was edited by bill_kapaun on Sat, May 31, 14 at 13:42


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RE: Riding mower turns over even when key is off

Bill, you are correct in all except the part where you state
***"Disconnect the SMALL wire to the starter solenoid.
IF the problem DISAPPEARS, the problem is a "stuck" solenoid."***
That should have stated that "If with the small wire disconnected from the solenoid, the problem REMAINS, then the solenoid is stuck (or internally shorted on itself)".
If the SOLENOID is stuck.....the problem is not going to go away by disconnecting the small wire.
If you disconnect the small wire and the problem goes away, that would indicate that the small wire is staying energized all the time, which would indicate a series of issues upstream from the solenoid (such as a stuck or shorted key switch and ALL the starter interlocks already defeated).
Or as you said, the small wire circuit shorted to a 12V source.


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RE: Riding mower turns over even when key is off

Right again mownie-
I'm getting in too much of a hurry.
Installing shingles on the roof and just checking the forums during my breaks.


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RE: Riding mower turns over even when key is off

I feel your pain. We went through replacing our roof shingles last June. No fun at all.


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RE: Riding mower turns over even when key is off

Especially when you're an acrophobic old guy!


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RE: Riding mower turns over even when key is off

I see you are acquainted with me.


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RE: Riding mower turns over even when key is off

Better get that fixed, guys! Those mowers are heavy, and when one turns over on its side, they are buggers to turn right-side up! This bit of wisdom from Rustyj, whom you thought went "belly-up"! Not so---just a new computer that is messing with my mind!
Also, met up with an old "flame" from 1947-48, who felt the same as me--ya ain't old, unless ya think ya are, and its down-hill from then on!
Fixed several tractors, last week, sold a push mower, gave an old Toro-Wheel Horse tractor to my son. He helps me a lot, now, felt he deserved it.! I just installed a new battery, too! RATS!!~
Bought a newer pickup. Tired of messing with those old "rats". Fair hums down the hi-way! Rusty J.


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