Thread: Summit starter
View Single Post
  #11  
Old 07-31-2022, 03:24 PM
i82much's Avatar
i82much i82much is offline
Ultimate Warrior
 
Join Date: Dec 2005
Posts: 2,797
Default

Quote:
Originally Posted by geeteeohguy View Post
All my heat soak issues on all the first-gen GTO's I owned and worked on disappeared when I replaced the purple S wire from the ignition switch to the starter solenoid.

Mounting a Ford solenoid is a band-aid to high resistance in the S wire. And since the starter works fine with the Ford Solenoid, the starter itself never got heat soaked.

What happens is over time, resistance builds up internally in the S wire and it can no longer carry the current needed to kick the solenoid out when the system is hot. Resistance increases with heat, so when nothing happens when you hit the key on a hot re-start, it's no voltage TO the solenoid, not the solenoid. You can veryify by jumping the solenoid under the car.

Not meaning to rant here, but want to point out that Pontiac engineers had it pretty well figured out and the new super starters and band-aid solenoids are merely masking the real issue: 50 year old wiring with high resistance.
i will not dispute any of that, but a Ford solenoid has a lot of other advantages. You eliminate a huge run of always-hot high current wire and bump starting is much easier, for starters.

Get it? For "starters" ...

The Following User Says Thank You to i82much For This Useful Post: