no power to the secondary fuel injectors
12-04-09, 01:17 PM
#1
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no power to the secondary fuel injectors
whats up guys i have a problem with the secondary injectors not comeing on no ground from ecu replaced the ecu tested the tps and the boost sensor its a 1987 na gxl man trans all stock need help please does not add up 
12-04-09, 07:50 PM
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lack of power past 3800 shift light comes on at 5000 when cold then at 4000 when at temp no hesation at 3800 no power . i hot wired the injector and then grounded it. it kicked on because the injector powers off of the ecu in neg rather than pos . what controls the secondaryinjectors in the ecu??????
12-05-09, 10:20 AM
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The ECU decides to fire the secondary injectors based on MAP and RPM. If you disconnect the pressure sensor and then rev the engine to 4000 RPM, the secondaries should fire. Use a stethoscope to listen to make sure they are clicking.
