are all 6 injectors powered by 1 wire and where in fuse box does it connect in 1990 pontiac grand prix?

Asked by Feb 05, 2012 at 06:53 PM about the 1990 Pontiac Grand Prix 4 Dr LE Sedan

Question type: Maintenance & Repair

need wiring info on injectors bother power and ground

3 Answers

535

The injectors are powered at all times what makes the injector pulse is the ECU grounding the other wire out. If your looking for a fuse it should be marked EFI

535

Your best bet is to get a set of noid lights from your local auto zone you can rent them for about 30 bucks. this will tell you if your injectors are getting power and if they are pulsing the way they should be.

thanks

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