Car will only start with a boost

I have a 2002 Jeep Grand Cherokee v6 automotic. Car would not start, tried boost, worked, but when I put it in reverse it stopped.  Battery charge checked out ok. Boosted again to start and ran for 1/2 hour. When I turn it off it will not start again without a boost.  Cleaned battery terminals, still same probelm. Any idea? bad starter?


1 thought on “Car will only start with a boost”

  1. It is either the starter or the battery. In most cases I would say it is the battery since it does start with a boost.

    You can check for battery positive at the starter the next time it won’t start to to rule out a bad starter.

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