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740 1991 testing the regina coil pack 700

posted by  greg_mustang on  Mon Apr 2 18:01 CST 2012
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last visit: Sat May 10 07:26 CST 2014
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1991 very immaculate car.
Had some no start issues lately, replaced the crank sensor, wire was in sad shape, cleaned TB and adjusted TPS, ran some code tests on various sensors, now the car is completely impossible to fire up....

The last thing I touched before it failed to start was the spark plug wire at the regina coil.
I started it once after that, and again I played with the connection at the coil.
The wires are almost brand new. I took the coil assembly apart and cleaned the spring contact inside, it was not too bad, but still does not start.

Q: How can I test the regina coil assembly?
Resistance across the terminals of the coil itself? Does the power stage behind the coil feed 12v into it (there are two spring contacts..)?
Can I use a multimeter to measure the output of the coil while cranking?


Thanks,
Greg
--
Greg Mustang - www.volvoclassic.bravehost.com








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    740 1991 testing the regina coil pack 700

    posted by  greg_mustang on  Mon Apr 2 18:38 CST 2012
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    last visit: Sat May 10 07:26 CST 2014
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    i measured the two input terminal off the coil and get around .8 ohms.
    Are these supposed t be fead by 12v I assume?
    does it need to crank or just key in position 2?
    --
    Greg Mustang - www.volvoclassic.bravehost.com








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      740 1991 testing the regina coil pack 700

      posted by  someone claiming to be mmal231294 on  Tue Apr 3 07:42 CST 2012 [RELATED]

      Put a spare spark plug into the end of the wire that normally goes to the distributor. Have someone crank while you hold the spark plug(in the wire) to a ground point on the block. Look for spark. This only tells you that it is not completely shot. Better yet if you have a spare(known good), swap it in and see if she starts. Clean the mounting surface(coil to body) down to nice shiny metal as well. That being said, if the car was working fine previously....you most likely knocked something loose....







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