Not cranking after replacing starter, starter relay and DME relay.

[Gmontg02]

First off let me start by say this forum is awesome and very informative. The people on here that contribute and advise are great. I have a 99 986, I started the work replacing the water pump, thermostat, thermostat housing, idler pulleys and belt. I filled ther reservoir and went to to crank the motor to get the air bubbles out of the system. I got a not start, no crank. I have since installed a new starter, starter relay, and DME relay, still not cranking. I pulled the driver seat and saw some corrosion on the ground post for the anti-theft unit. I cleaned The ground stud and associated ring terminals. Any insight would be much appreciated.

[hoppizza]

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[madtown986]

I had a weak start/no start on mine and it turned out the battery was 10 years old even though it looked new.

The ground strap can be a common issue if it gets corroded. I think there is one by the battery and also one on the engine. I know the immobilizer gives people fits too. Sounds like you gave that a look already though.

these are the threads i saved on troubleshooting:
https://986forum.com/forums/boxster-general-discussions/49850-intermittent-start-problem.html
https://www.pelicanparts.com/techarticles/Boxster_Tech/81-ELEC-Battery/81-ELEC-Battery.htm