Starter Booster, I hate to revisit this topic, but... Options

[black914]

I have found this topic through a search but my question remains unanswered! I went down to the Queen City yesterday to do a repair on my son's 924S. The trip is essentially 85 miles of 65 miles per hour non-stop driving. When I arrived and rested for about thrity minutes, we decided to go get something to eat first, got in the 914, turned the ignition switch and no turnover. The fuel pump was operating but the starter was not getting the signal. I let it cool for a while, attempted to crank it again and it fired right away. We ran a few errands and made about three stops requiring the engine to be turned off and restarted and I encountered no problems. Went home later in the day around 6:30PM, traveled the miles at 65 steady for about one hour, stopped to get a cola, got back in, attempted to crank it, but again, nothing. Fortunately a good samaritan help me push it off and I got it cranked okay. I got home safely.

I notice that Bosch has encountered this problem before and they have offered a starter booster kit that cures the hot starter problem by boosting the voltage to the starter. My 914 has a remanufactured starter (don't know the age because it was installed by the previous owner).

Would this cure my problem? Apparently it has been a problem in the past or Bosch would not have offered a cure.

Comments?

[black914]

Travis,

Battery ground and transmission ground are brand new. I'll investigate the starter wire tomorrow. I just hate to replace the solenoid if it is not the culprit. I suspect heat is the main issue here because the car seems to start fine when it is cool.