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???

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.

Re: Starter switch
 

Re: Starter switch
 

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.:rolleyes::p

Re: Starter switch
 

A weak battery can cause excess heat in contacts, leading to them welding together.

Re: Starter switch
 

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.

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

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