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Discussion Topic:
solenoid gets hot using push button
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murphy1941 |
09-14-2016 @ 7:57 PM
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Member
Posts: 43
Joined: Jun 2016
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Would bad ground make button get hot when working under hood ? Had problem turning over engine when car gets hot
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ford38v8 |
09-14-2016 @ 11:43 PM
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Senior
Posts: 2739
Joined: Oct 2009
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Murphy, The solenoid is either working or it's not. If the starter motor is cranking, no matter if it's fast or slow, there is no problem with the solenoid. Now, if the cable to the starter gets hot, that is an indication of an undersized cable, again not the fault of the solenoid.
Alan
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jwitt |
09-15-2016 @ 5:45 AM
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Member
Posts: 28
Joined: Mar 2016
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If the button gets hot that is indicating that the current capacity of the button wiring or button contacts is too small for the current draw of the solenoid coil. Check to see if the wiring to the push button is also warm. Solution is a higher capacity button and or larger gauge wiring in that circuit (or maybe a different solenoid with a higher resistance coil) To test, just disconnect the solenoid to starter cable and you can hold the push button down without cranking the starter. The circuit through the button just turns on the solenoid coil, there isn't any electrical connection between the push button/solenoid circuit and the heavy current circuit of the solenoid contacts/battery/starter. John
Houston, Tranquility Base here, the Eagle has landed.
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40cpe |
09-15-2016 @ 7:04 AM
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Member
Posts: 472
Joined: Jan 2010
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I'm assuming that Murphy is talking about the button on the starter solenoid getting hot. I would think that burned/pitted/eroded contacts within the solenoid would be a possible cause, and slow cranking would be another symptom of the burned contacts.
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41 Ford Pickup |
10-29-2016 @ 9:10 PM
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Member
Posts: 4
Joined: Oct 2016
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I have been having battery and starting issues with my 1941 Ford 1/2 ton V8 pickup. It is new to me and stock 6V positive ground. I bought a new starter solenoid because the original is rusted. The new solenoid from Macs matches the old one and looks similar to the one you have pictured above. The current solenoid is mounted with the auxillary starting switch to the top. The thumbnails above show the switch at the bottom. My shop manual shows it both ways. Up makes more sense to me. Up or down changes the driver and passenger sides and how you connect the cables. As it came from the previous owner, the negative battery cable goes to the driver side of the solenoid and a ground strap also goes from the driver side solenoid to the engine. What is correct installation?
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39 Ken |
10-30-2016 @ 4:50 AM
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Member
Posts: 380
Joined: Oct 2009
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See my post under General Trucks Discussion.
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trjford8 |
10-31-2016 @ 7:03 AM
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Senior
Posts: 4203
Joined: Oct 2009
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Check all your grounds. The body needs to be grounded to the frame. Make sure all grounds are clean and there is no corrosion on the cables , especially the braided ground cables.
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