1990 Buick Century injectors

1990 BUICK CENTURY
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MACATNIGHT
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1990 Buick Century 6 cyl Automatic 65000 miles

injectors wont spray gas has fire going to both wires going to injector when key is on changed the computer
Aug 19, 2010 at 11:35 AM
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JDL
  • ✓ASE Certified Mechanic
  • 16,098 POSTS
  • ASE Certified Mechanic
Unless you unplug all injectors, there will be voltage on both wires. On this system, the grounds are shared. Use a noid lite, see if you have injector pulse? The computer controls injector ground. If you have voltage at the injector, but no ground, one possibility is the computer doesn't see an rpm signal. There could be more than one reason for that.
Aug 19, 2010 at 1:45 PM
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