Ignition puzzle?

Tiny
SLAWFISH
  • MEMBER
  • 1986 CHEVROLET S-10
  • 4 CYL
  • 2WD
  • AUTOMATIC
86 S-10 2.5L wont start, coil burning up when ignition is on, running or not, voltage at pink wire to coil is battery voltage, when replacing with a new coil, engine sputters for about a second and backfires, then does not try anymore and coil lets its smoke out. Tried replacing module, coil 7 times, hall effect, ecm, no success, removed dist. And found black wire from module + pin going to the small ceramic box mounted under it broken. Tried to solder it back and no change.? I reckon perhaps the pickup coil is faulty or perhaps the ceramic box with the broken wire is a ballast resistor and soldering was unsuccessful. What do you think?
Monday, May 16th, 2011 AT 3:33 PM

3 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
What ceramic box? Isn't this an HEI system?
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Monday, May 16th, 2011 AT 5:16 PM
Tiny
SLAWFISH
  • MEMBER
  • 2 POSTS
No, Its an HEI-ESt system with the crank sensor inside the distributor on top of the pickup coil. I believe this is a california model. What appears to be a red ceramic box is under the pins of the module on the right side from the crank sensor.
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Tuesday, May 17th, 2011 AT 6:06 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
I still don't know what the ceramic box is that you refer to. There are no resisters in the system. I would check for injector pulse and if you do have it, then the pick up coil is working.
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Tuesday, May 17th, 2011 AT 11:22 AM

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