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Starter Solenoids Keep Going Out |
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jonb79
AMC Nut Joined: Aug/27/2011 Location: Milwaukee Status: Offline Points: 274 |
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Posted: Feb/16/2012 at 10:35am |
From my experiece, I have seen constant duty solenoids (heavy duty solenoid used mainly in equipment) weld themselves close due to a stuck relay and or a switch that was bad. I don't know the the diagram of the starter circuit but it wouldn't be a bad idea to check the power at the switch with a voltmeter to see if power is being supplied to the starter relay even with the ign switch off.
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RB401
AMC Apprentice Joined: Jul/08/2007 Location: United States Status: Offline Points: 232 |
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Just wanted to say I finally fixed the solenoid problem last weekend. I don't really know what the problem was, but the starting circuit is simple, so I replaced the starter, postive and negative battery cables, starter cable and the engine to chassis ground wire. The chassis ground wire was a 10 guage wire and appeared to have been original. I replaced it with a short 4 guage starter cable. Cleaned all the connections with sand paper. Checked for continuity through the s-wire and the neutral saftey switch (on the T5). My guess, it was just a poor ground. Anyway, no more solenoid hang-up and consequent starter run-on and in general all seems good.
Thanks for everyone's suggestions.
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'73 Javelin AMX, 401, T5
T5 Swap Page: http://mysite.verizon.net/amxjavelin/t5swap/t5swap.html |
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billd
Moderator Group Forum Administrator Joined: Jun/27/2007 Location: Iowa Status: Offline Points: 30894 |
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Ignition switches of that age can develop intermittent issues..... can be tricky to nail down.
DO NOT GIVE UP. |
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RB401
AMC Apprentice Joined: Jul/08/2007 Location: United States Status: Offline Points: 232 |
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Ok, so after work, I went out and tried starting the car and what does it do--starts right up! Tried it a few times, started each time. So, the problem now seems like either a poor ground or an intermittant open circuit possibly in the s-wire from the ignition switch or maybe the ignition switch itself. Next weekend, I will get out with the voltmeter and start resistance checking all of the starting system wires, clean the grounds, etc. Replacing the s-wire from the ignition switch to the s-terminal on the solenoid is probably a hassle, so hopefully that wire will checkout okay.
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'73 Javelin AMX, 401, T5
T5 Swap Page: http://mysite.verizon.net/amxjavelin/t5swap/t5swap.html |
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73hornut
AMC Addicted Joined: Jul/03/2007 Location: Southern Oregon Status: Offline Points: 3130 |
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71 Javelin
74 Gremlin 79 Spirit AMX Rogue Valley Rumblers Like Us on FB https://www.facebook.com/groups/1602825606650796 |
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RB401
AMC Apprentice Joined: Jul/08/2007 Location: United States Status: Offline Points: 232 |
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The motor does turn over if you jump from battery positive to the starter side of the solenoid.
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'73 Javelin AMX, 401, T5
T5 Swap Page: http://mysite.verizon.net/amxjavelin/t5swap/t5swap.html |
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FuzzFace2
AMC Addicted Joined: Jul/05/2007 Location: Angier, N.C. Status: Offline Points: 10356 |
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OK are ALL the batt. cables new out of box or are they old and look good? If they "look good" I would replace them and dont forget the ground behind the pass side motor mount.
If you run a wire from batt + to the S on the SOL the motor should turn over if not then there is something still wrong/bad somewhere. Now someone said something about a ground wire on the back of the SOL? I have never seen any with this on it but have seen that the SOL needs to be grounded to the inside fender so if you just painted it you may want to cleam off some of the paint to see if this does anything. The other thing the ground from batt to motor IIRC is to the head. Motor painted? Clean off the paint on the motor and put the ground back on.
Once you get the motor to turn over using the jumper wire from batt to SOL you can see if the normal wire will work.
Dave ----
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TSM = Technical Service Manual
75 Gremlin X v8 for sale 70 Javelin 360/auto drag car 70 Javelin 360/T5 Street car |
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carnuck
AMC Addicted Joined: Mar/31/2010 Location: Seattle Status: Offline Points: 3942 |
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Is the ground wire off the back of the solenoid?
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Got an Eagle?
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RB401
AMC Apprentice Joined: Jul/08/2007 Location: United States Status: Offline Points: 232 |
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Help!
Does anyone have any idea what is happening here? It's hard to believe I have gotten three bad solenoids in a row. Something must be wrong, but I can't figure it out.
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'73 Javelin AMX, 401, T5
T5 Swap Page: http://mysite.verizon.net/amxjavelin/t5swap/t5swap.html |
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6PakBee
Supporter of TheAMCForum Charter Member Joined: Jul/01/2007 Location: North Dakota Status: Offline Points: 5457 |
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With the quality of parts you get it seems it's just a crap shoot as to what will fail next.
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Roger Gazur
1969 'B' Scheme SC/Rambler 1970 RWB 4-spd Machine 1970 Sonic Silver auto AMX All project cars. Forum Cockroach |
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