Hot Start and Bucking Problem

[dingo]

rather resistance in the coil windings.

interesting...so how does this get resolved ??

[Amskeptic]

rather resistance in the coil windings.

interesting...so how does this get resolved ??

It doesn't. It gets replaced. Hot start relays help delay the eventual reckoning.

[drober23]

Sorry for the lack of updates recently. I have been travelling too much for work lately. Currently in Houston (last week was Indiana, the week before was Austria... Austria was nice though)

When I get back, I will do the voltage drop test (using the wire from the ignition connecting to the solenoid). Hopefully I can take this measurement with the starter working, and with it not working.

You mentioned the starter eventually gets replaced. Would a re-build be likely to fix this? I trust an OG starter used and rebuilt more than I would trust whatever new starter I might find today.

[Amskeptic]

Sorry for the lack of updates recently. I have been travelling too much for work lately. Currently in Houston (last week was Indiana, the week before was Austria... Austria was nice though)

When I get back, I will do the voltage drop test (using the wire from the ignition connecting to the solenoid). Hopefully I can take this measurement with the starter working, and with it not working.

You mentioned the starter eventually gets replaced. Would a re-build be likely to fix this? I trust an OG starter used and rebuilt more than I would trust whatever new starter I might find today.

I do not think that any "rebuilders" are re-winding solenoids.
Colin

[drober23]

I finally did my voltage drop test.

My battery was at 12.5v and I was getting 11.9 at the wire from the starter to the solenoid. The solenoid failed a couple times when the bus was cold (morning) and the voltage was the same as when it worked.

I see that replacement Bosch solenoids are available. Have people had luck with them? If so, I will probably go that route, as it doesn't seem like I'm losing too much voltage.

[Amskeptic]

I finally did my voltage drop test.

My battery was at 12.5v and I was getting 11.9 at the wire from the starter to the solenoid. The solenoid failed a couple times when the bus was cold (morning) and the voltage was the same as when it worked.

I see that replacement Bosch solenoids are available. Have people had luck with them? If so, I will probably go that route, as it doesn't seem like I'm losing too much voltage.

I put in a trick little Bosch reduction gear complete starter in the Road Warrior that worked perfectly forever until the car was killed. Eight years of hellish heat, no problemo.

[grandfatherjim]

I bought one of the solenoids and discovered its coil resistance was much lower than the original. I forget the numbers.
That would have meant more current flow through the solenoid = more current through wiring = more voltage drop across wiring.
So then I went with the hot start relay and stayed with my original solenoid.
I still intend to replace my ignition switch wiring as I believe the contacts inside it are in bad shape.
Jim