| [GMCnet] 78 Royale starting issue [message #240574] |
Thu, 20 February 2014 09:05  |
glwgmc
Messages: 1014
Registered: June 2004
Karma: 10
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Senior Member |
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Hi,
We are in Mexico at the moment so don't know when this email might go out, but we had a similar issue on our way south. Turned out to be the starter solenoid for us but here is my suggestion for diagnosing/fixing while on the road.
1) stop by an auto parts store parking over a parking lot drain so you can get under the coach to reach the starter of necessary.
2) at the top side of the steering column near the floor is a switch with two purple wires on one connector. One of those purple wires comes from the start terminal on the key switch carrying 12vdc when the key is in the start position. Check with a meter to find that 12vdc hot wire. The other wire goes directly to the starter solenoid to energize the starter. The switch those two purple wires plugs in to is the neutral safety start switch that is there to prevent the coach from starting unless you are in park or neutral.
3) if you do not find 12vdc on one of those two wires then the key switch is suspect and you will need to buy a piece of 12ga wire to "hot wire" the coach to get it to start. Be careful to be in neutral or park!
4) if you do find 12vdc on one of those wires, then buy two male clamp on spade terminals and a short piece of 12ga wire to make a jumper to bypass the neutral safety switch. Again, be careful to start only while in park or neutral.
5) if the starter solenoid still does not energize the starter with this jumper in place, then either the purple wire going from the neutral safety switch to the starter solenoid is broken or shorted, or you will need to replace the solenoid and/or the starter. Either way you need to crawl under the coach with a volt meter. Be sure you are in park with the e-brake set! Remove the wire going to the solenoid and see if you have 12vdc when the key is in the start position. Is you do, replace the solenoid and/or the starter.
Our 3 year old solenoid was junk inside. Cleaned up the terminals and it worked again but it will get changed when we get back home. Hope this helps. Enjoy your new coach. She will give you years of smiles once you work out irritants like this.
Jerry
Jerry Work
The Dovetail Joint
Fine furniture designed & hand crafted
in the 1907 former Masonic Temple building
in historic Kerby, OR
http://jerrywork.com
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Jerry & Sharon Work
78 Royale
Kerby, OR
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| Re: [GMCnet] 78 Royale starting issue [message #240582 is a reply to message #240574] |
Thu, 20 February 2014 11:43  |
Bob de Kruyff
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
Karma: 1
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Senior Member |
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""Our 3 year old solenoid was junk inside. Cleaned up the terminals and it worked again but it will get changed when we get back home. Hope this helps. Enjoy your new coach. She will give you years of smiles once you work out irritants like this.
""
If you are OK getting under the coach, I would just take a good size screw driver and jumper between the large hot stud (with the battery cable terminal) and the small stud on the solenoid. If it starts, the problem is upstream. Be sure the coach is in park!
Bob de Kruyff
78 Eleganza
Chandler, AZ
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| Re: [GMCnet] 78 Royale starting issue [message #240868 is a reply to message #240574] |
Sat, 22 February 2014 14:39 |
Chris Tyler
Messages: 458
Registered: September 2013
Location: Odessa FL
Karma: 7
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Senior Member |
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Jumping it that way means the starter and the electromagnetic part of the solenoid works, but the contact part of the solenoid may still be bad.
I used a Ford type solenoid up front and bridged the switch part to eliminate a nagging problem that was one reason the PO sold cheap after having the starter and solenoid changed several times. I posted about it and got flamed for my Redneck Engineering solution but it solved the problem for me.
76 Glenbrook
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