Hi.
Just curious but if the solenoid is too hot to engage the gear, how does adding
an external relay cause it to engage? Is it because you are applying a full
12volts with a heavy gauge wire from the external relay to the hot solenoid?
I added a Chrysler relay on my Impaler due to a big voltage drop that prevented
the solenoid from engaging, hot or cold. Never did figure out why the voltage
dropped to about seven volts at the solenoid.
Could you have a similar problem caused by heat?
Anyway, it's easy to do. Wire from the key to the relay switch, 12 volts from
battery to input of relay, output to solenoid. Should ground wherever you bolt
it.
Output and input side should be a large connection, switch will be smaller.
Hope this helps.
J
-------------- Original message --------------
> i know GM had a problen for years with "heat soak" causing the starter
>solenoid
> to fail when extremly hot. the repair was to install a ford type solenoid in
> GM trucks(mostly). i have not done one of these repairs for around 20 years
> now
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