Thread: Help with code 43 on 91 ls motor.
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Old May 12, 2004 | 10:18 PM
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slammed91-hatch
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From: Washington State
Default Help with code 43 on 91 ls motor.
I was messing around with the vacuum lines trying to get them right with the motor running and all of the sudden the motor started to like pop and stuff. The ecu is flashing 43 which is fuel supply system. what could this be that would happen all of the sudden like this?
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