if you could post a picture of the part that would help.
11.8 volts is pretty low as far as a battery is concerned. fully charged is 12.7 volts.
i would suggest you go get your battery load tested (sears auto center will charge and load test your battery for free, takes up to two days due to charging)
i dont think that is the root of your problem tho. have you checked for spark at the coils themselves? and if your injectors arent getting signal, it could be the injector resistor, that may be the grey box your seeing.
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87 toyota 4x4 single cab short box pickup, 7MGZE.
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