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1990 Buick Century injectors

Tiny
MACATNIGHT
  • MEMBER
  • 1990 BUICK CENTURY
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
Thursday, August 19th, 2010 AT 11:35 AM

1 Reply

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
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.
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Thursday, August 19th, 2010 AT 1:45 PM

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