Question about 1990 Isuzu Trooper
I am getting gas to my TBI however the injectors are not delivering it to the engine. Each injector has a constant power (green wires) and the other wires (one inj. has blue and the other has black w/ blue stripe) show as ground w/ key on engine off with a test light, when the engine is turned over there is no ground. I thought (my first mistake) that these 2 wires should pulse to the inj. I have tried a different ignition switch to no avail. There is also a wiring hookup for a computer but no computer. I have put 178k miles on her with only minor problems. Any input is appreciated. Thank you.
I am having a simalr problem, fuel to the throttle body but the injectors are not firing. I have removed and tested the ign. modual, have replaced the fuel relays and replaced the fuel pump and filter, the old pump was only putting out 20psi. Noid Lights show no signal to the injectors. any suggestions?
Posted on May 25, 2013
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Posted on Jan 02, 2017
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