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08-08-2013, 02:03 PM | #1 |
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Join Date: Dec 2010
Location: Port St Lucie Florida
Posts: 398
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Ignition switch failure
Took my 36 Cabriolet for a excersize drive today Stopped at a friends shop for a few minutes & no start After some diag. found the Ing switch not working so jumped to get home & replace switch This was the 1st time this part was an issue for me. Any Tips?
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08-08-2013, 03:05 PM | #2 |
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Join Date: May 2010
Posts: 23
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Re: Ignition switch failure
Ken----Replace with NOS Ford switch plate and brush. Fits 32 thru 37.
The remakes are warped junk. I just fixed a 37 that failed on the way home from Tahoe meet. Check the resistance when you are done installing new parts, before you connect wires. Should be .1 ohm or less. Gary |
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08-08-2013, 03:31 PM | #3 |
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Location: Flowery Branch, GA
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Re: Ignition switch failure
I had the same issue in my 36 pickup.
Clean the contact on the plate and adjust the brush to increase the spring pressure. Norm |
08-08-2013, 06:05 PM | #4 |
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Location: Tucson, Az.
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Re: Ignition switch failure
I too had an issue with the brass "brush". It is a moving part that is 75 years old. Has to wear out. The origional ones are getting hard to find. Thanks to a gentleman here on the Barn, I was able to replace mine with a NOS brush.
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08-08-2013, 06:29 PM | #5 |
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Re: Ignition switch failure
Stacy, Arlington TX has NOS. 817 275 2381
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08-08-2013, 06:41 PM | #6 |
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Re: Ignition switch failure
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Last edited by Clem Clement; 08-09-2013 at 10:19 AM. |
08-08-2013, 11:02 PM | #7 |
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Location: Minnesota
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Re: Ignition switch failure
I realize that the manufacturers of replacement parts list the ignition switch as 32-37, but in 37 they reversed the "on" direction from down (32-36) to up for 37 so the switch would not work the same.
Last edited by Gary Tosel; 08-08-2013 at 11:02 PM. Reason: spelling error |
08-09-2013, 04:32 AM | #8 |
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Join Date: Jun 2012
Location: Gaylord, Michigan
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Re: Ignition switch failure
Bull.....
I had a similar problem with my '40 switch. I bought two from Mac's and neither of them worked so I sent them both back. I bought one from C & G.....and it worked. I also noticed that is was manufactured better. I have no way of knowing if it was made by another company or not, but bang....it worked immediately after putting it in. Mike |
08-09-2013, 12:46 PM | #9 |
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Join Date: Dec 2010
Location: Port St Lucie Florida
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Re: Ignition switch failure
I took it apart, cleaned the contacts, bent the brush a little at each end put together & works good. Will keep a jumper wire in glove compartment for insurance. Thanks all for the tips
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08-24-2013, 12:28 AM | #10 |
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Join Date: Dec 2012
Location: Southern Maryland
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Re: Ignition switch failure
Actually Ford made the On-Off position change in Late '36.
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08-24-2013, 08:12 AM | #11 |
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Location: Florida and Penna.
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Re: Ignition switch failure
Ken and Norm, you got it. You should take the little rounded contacts and run them over 1000 sand paper on a flat surface. This will give you little flats on the bottom for better contact area. I have never seen a seen a relay with round contact surfaces. Also sand the wear and arc marks out of the flat contact plate and finish with 800 or 1000 paper again on a flat plate. The original plates were milled with a fly cutter or shaper and had big ridges and groves, along with the round contacts this is what started the arcing. G.M.
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06-12-2017, 12:32 PM | #12 |
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Re: Ignition switch failure
Cheers guys. Bringing this back from the archives with a thank you. Had the same issue with a '38 I've just bought and it was the contacts in the switch. Used G.M.'s methods of flatting them with 1000 grit lubed with Plusgas, and all is good.
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06-12-2017, 08:23 PM | #13 |
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Join Date: May 2010
Location: Mill Valley,Ca.
Posts: 1,509
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Re: Ignition switch failure
If you're running a bunch of electrics, it's possible to use a relay. The ignition switch would only have to run power to operate the relay. I have a bunch of Bosch 40 amp relays from old car projects- that's what I use.
I put them into the headlight circuits of my old Ford pick up as the head lamps I used would use amperage that would melt the dimmer switch. Karl |
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