No crank

2007 PONTIAC TORRENT
84,000 MILES • 3.4L • 6 CYL • AWD • AUTOMATIC
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DACRULL1972
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  • 1 POST
My daughter was idling the car, in park, and said it sputtered then would not do anything, at this point I believe it stalled. She then she attempted to start it back up and nothing happened. We took the battery and starter to leave them tested and they both passed. The battery is six years old and even though it takes a full charge, it shuts off pretty quickly with the key on and the door open, less than thirty minutes. I tested the S post on the starter on an ate emptied start and there was no signal. I replaced the ignition relay and all the fuses have been checked. I went through several wires and all looks good. When I hook up a Matco Maxme scanner it is not communicating with the ECU. This scanner worked on several other cars. I am trying to narrow down to a bad computer, but I am not sure what or how to retest the computer before dropping $200.00 on a new one. Any help would be appreciated.
Sep 2, 2017 at 5:39 PM
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STRAILER
  • ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
The battery sounds bad to me, lets test it ourselves by following this quick guide.

https://www.2carpros.com/articles/car-battery-load-test

and if bad

https://www.2carpros.com/articles/how-to-replace-a-car-battery

Please let us know what you find.

Cheers, Ken
Sep 4, 2017 at 8:23 PM
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