RX7 won't start without a boost and has newer battery showing 13.6/7 volts. Any ideas?

1987 MAZDA RX7
100 MILES
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GOODMACK
  • MEMBER
  • 1 POST
My son's RX7 will start with a boost and after driving for 5 minutes will start right up after he shuts it off. But after he shuts it off again, it won't start. He thought it was a starter problem and got his rebuilt but the same thing is happening. Battery posts and connections look good. Sounds like a wiring problem but am wondering what other possibilites therecould be
Aug 15, 2012 at 4:59 PM
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DJCL
  • ✓Experienced Mechanic
  • 767 POSTS
Connections looking good are diferent than testing good. Try running a jumper cable from the pos term to the fat lug on the starter and adding a ground from bat neg to the engine block
Aug 15, 2012 at 5:12 PM
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KHLOW2008
  • ✓Experienced Mechanic
  • 41,812 POSTS
What is the battery capacity. Yu mentioned newer, that means it is not new? Get the battery tested.
Aug 16, 2012 at 2:16 AM
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