Go Back   The Ford Barn > General Discussion > Model A (1928-31)

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Display Modes
Old 05-16-2017, 09:47 AM   #1
Glenn of northport
Member
 
Glenn of northport's Avatar
 
Join Date: May 2010
Location: northport mi
Posts: 87
Default Starter switch

This year on start up 2 cars had same problem starter switch copper contact in side of switch would stick together causing starter to run after I took switch apart it looked like it was welded together why???
Glenn of northport is offline   Reply With Quote
Old 05-16-2017, 10:08 AM   #2
SeaSlugs
Senior Member
 
SeaSlugs's Avatar
 
Join Date: May 2010
Location: Central, IL
Posts: 3,968
Default Re: Starter switch

poor total contact so alot of current through a small space creates alot of heat thus melting thus welding. Really need to make sure the entire contact strip touches most of the contact button not just an edge.

Starter could be drawing excessive amps as well OR your not really jamming it down to make excellent contact.

Or if you dont drive them often the copper can corrode causing high resistance thus heat.

little of A little of b and c and d i think.
__________________
1929 Model AA - Need long splash aprons!
SeaSlugs is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 05-16-2017, 10:13 AM   #3
Y-Blockhead
Senior Member
 
Y-Blockhead's Avatar
 
Join Date: Jul 2011
Location: Redondo Beach, CA
Posts: 5,817
Default Re: Starter switch

Quote:
Originally Posted by SeaSlugs View Post
OR your not really jamming it down to make excellent contact.
I like this one...
Y-Blockhead is offline   Reply With Quote
Old 05-16-2017, 10:17 AM   #4
SeaSlugs
Senior Member
 
SeaSlugs's Avatar
 
Join Date: May 2010
Location: Central, IL
Posts: 3,968
Default Re: Starter switch

Quote:
Originally Posted by Y-Blockhead View Post
I like this one...
Yea, think of your foot as the coil in a relay - if the coil is weak it wont draw the contacts together tight and cause heat and eventually arcing which causes pitting which makes the poor contact problem 50X worse until it welds itself.
__________________
1929 Model AA - Need long splash aprons!
SeaSlugs is offline   Reply With Quote
Old 05-16-2017, 10:29 AM   #5
cpf240
Senior Member
 
cpf240's Avatar
 
Join Date: Feb 2017
Location: Northern Idaho
Posts: 282
Default Re: Starter switch

A weak battery can cause excess heat in contacts, leading to them welding together.
cpf240 is offline   Reply With Quote
Old 05-16-2017, 10:30 AM   #6
H. L. Chauvin
Senior Member
 
Join Date: May 2010
Posts: 4,179
Default Re: Starter switch

Sponsored Links (Register now to hide all advertisements)
Check the new starter switch's manufacturer's name.

If all of them were newly manufactured by "Vintique" .... that is the "only" problem.

"Vintique" have been manufacturing these "poorly" designed and "poor" quality reproduction starter switches for years; however, because of short supply of well made original starter switches, Model A owners have no choice but to buy these beautiful malfunctioning "look alikes" and rework and enlarge the plunger hole in the top of the body with a "Dremel" tool to allow the plunger to line up with the angle of the starter rod above.

If this hole enlargement procedure is not performed, the plunger gets jammed downward, does not pop back up, and the starter continues to engage and rotate after the engine is running.

Under "Search" above, one can find same types of starter switch problems which could fill volumes of stories on the non-ferrous starter switch's flat bar becoming welded to the non-ferrous starter button on top of the starter.

Hope this helps ..... after this starter switch metal plastic surgery procedure, all is well.

Last edited by H. L. Chauvin; 05-16-2017 at 10:34 AM. Reason: typo
H. L. Chauvin is offline   Reply With Quote
Old 05-16-2017, 10:38 AM   #7
Glenn of northport
Member
 
Glenn of northport's Avatar
 
Join Date: May 2010
Location: northport mi
Posts: 87
Default Re: Starter switch

Just for the record I am talking about 2 cars and I have been working and driving them since 1946 I will check on who made them I think that could be the problem if not I will have my doc check my foot power thanks and cheers
Glenn of northport is offline   Reply With Quote
Old 05-16-2017, 10:56 AM   #8
H. L. Chauvin
Senior Member
 
Join Date: May 2010
Posts: 4,179
Default Re: Starter switch

Hi Glenn,

Thanks.

Never tried foot powder on a starter switch .... but at our age, may never be too late to learn something new. LOL

Last edited by H. L. Chauvin; 05-16-2017 at 10:56 AM. Reason: typo
H. L. Chauvin is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 11:39 AM.