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Old 12-04-2017, 08:40 PM   #1
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Default 90 d21 v6 nothing at injectors

90 d21 6 banger found bad main relay by switching with fuel pump relay.replaced still no injector pulse,no power or ground at injectors,need a wiring diagram or suggestions,thanks
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Old 12-04-2017, 09:03 PM   #2
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Have you a copy of the FSM?
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Old 12-04-2017, 09:05 PM   #3
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Check your fusible links. One of them provides power to your fuel injection.
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Old 12-04-2017, 09:30 PM   #4
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I do not have a fsm unfortunately,I ordered a dizzy today will replace tomorrow,I will check the links.Are they at the connectors on positive batt terminal?
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Old 12-04-2017, 09:35 PM   #5
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keep in mind this is an old abused woods truck,had been sitting for 3 years,put a new pump and filter in it,cap rotor plugs and wires,started right up then acted like it had some hesitation after 10 to 15 minutes finally died,will run on starting fluid,put noid light on number one injector and nothing,taking volt meter tomorrow as well
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Old 12-04-2017, 09:40 PM   #6
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can I test the cas by testing at the dizzy connector.just thought of something from my original post,I switched the main and fuel pump relays to find out the main relay was bad cause the fuel pump quit working Iused the known good relay in the main slot and left the pump relay slot empty to test for injector pulse and nothing with noid light,what constant voltage should I have to injectors
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Old 12-05-2017, 12:39 AM   #7
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Hopefully JP or 'Bama will comment. They have a link to the FSM in their signature. I need to add that to mine. Its free and in PDF format.

If it is running for any length of time you are getting fuel somehow.
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Old 12-05-2017, 01:33 AM   #8
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well it was running not now.If I spray starting fluid in the intake it will run until I stop the spray.Just seems odd that I have lost power and ground at the same time.I am assuming that I would have constant 12 volts at injectors with just key on,then when you crank it should pulse ground
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Old 12-05-2017, 01:57 AM   #9
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It could be as crazy as a bad ground for your stereo. These truck do and stuff. Check your entire ground too.
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Old 12-05-2017, 02:20 AM   #10
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happen to know ground locations
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