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08-07-2020, 06:31 PM
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#1
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Junior Member
Join Date: Apr 2020
Posts: 14
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01 Gulfstream starter spins
This is a 2001 gulfstream 8.3 cummings diesel pusher. Today it started fine and ran 10 min..
Shut it off and when we restarted, the engine didn't turn over but the starter began spinning out off control. We had already turned the key in ignition off and starter motor was spinning still. We had to disconnect the batteries to kill the starter. I'm assuming starter solinoid stuck? Opinions please.
Also when I looked under at the started the positive connection on the starter has 5 wires???
I've never .... what do they all go to?
Thank for any advice
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08-07-2020, 06:52 PM
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#2
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Senior Member
Join Date: Apr 2011
Location: Powell River, B.C.
Posts: 28,021
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Your problem does sound like the starer solenoid , is powering the armature even with the relay ( ignition power ) off.
To identify all the wires hooked to the starter , you'll need a wiring schematic from the chassis manufacturer .
On my F/L chassis the alternator power , goes to the batteries from the connection at the starter along with others that I've never tried to identify.
__________________
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
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08-07-2020, 07:30 PM
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#3
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Senior Member
Join Date: Jul 2014
Posts: 32,655
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You most likely have another seperate solenoid connected to the wire coming from the "S " terminal of the starter mounted solenoid.
Its smaller then the battery cable, about 10 gauge and leads to the solenoid that often sticks. That solenoid is feed from the batteries, so the starter solenoid current doesn't need to go to the front of the RV.
Follow the "S " terminal wire if possable towards the batteries. The solenoid is often tucked up in hidden places.
It should look like this and they are calling it a magnetic switch.
Find it, smack it with a hammer, and see if you can put the battery cables back on. 
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08-07-2020, 08:24 PM
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#4
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Senior Member
Join Date: Apr 2015
Location: Rogers, AR
Posts: 2,124
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When you turn the key on to start, the starter solenoid is electrified. This does two things, it closes the high amp starter motor switch to run the motor, and it mechanically kicks the starter gear out to engage the flywheel ring gear. It sounds like your motor runs, but the mechanical part isn't operating. A spring should also release the switch so the motor stops, but that isn't happening. A new solenoid is in order if it can be replaced. Likely it will just be a complete starter exchange.
The five wires on the terminal may represent other things picking up 12V there and have nothing to do with the starter.
__________________
2019 Fleetwood Discovery LXE 40M w/2021 Equinox
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08-07-2020, 08:41 PM
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#5
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Junior Member
Join Date: Apr 2020
Posts: 14
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Quote:
Originally Posted by twinboat
You most likely have another seperate solenoid connected to the wire coming from the "S " terminal of the starter mounted solenoid.
Its smaller then the battery cable, about 10 gauge and leads to the solenoid that often sticks. That solenoid is feed from the batteries, so the starter solenoid current doesn't need to go to the front of the RV.
Follow the "S " terminal wire if possable towards the batteries. The solenoid is often tucked up in hidden places.
It should look like this and they are calling it a magnetic switch.
Find it, smack it with a hammer, and see if you can put the battery cables back on. Attachment 296287 |
Thank you, I knew it couldn't be easy 🤣
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08-07-2020, 08:41 PM
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#6
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Junior Member
Join Date: Apr 2020
Posts: 14
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Thank you
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08-07-2020, 08:45 PM
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#7
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Junior Member
Join Date: Apr 2020
Posts: 14
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This great info thanks
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08-07-2020, 08:57 PM
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#8
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Senior Member
Join Date: May 2017
Location: Vancouver Wash
Posts: 7,230
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The magnetic switch Twinboat mentioned is a Ford starter solenoid.....they use those because after a run on the highway and you stop to fuel up, the starter absorbs the engine heat and exhaust manifold heat....with the remote solenoid the starter doesn't have to wait for a cool down period....GM started doing that back in the 70's...
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08-08-2020, 07:08 AM
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#9
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Junior Member
Join Date: Apr 2020
Posts: 14
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Quote:
Originally Posted by bob caldwell
The magnetic switch Twinboat mentioned is a Ford starter solenoid.....they use those because after a run on the highway and you stop to fuel up, the starter absorbs the engine heat and exhaust manifold heat....with the remote solenoid the starter doesn't have to wait for a cool down period....GM started doing that back in the 70's...
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Great info thanks. Now if I can just find it
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