FUEL

1995 OLDSMOBILE DELTA 88
125,000 MILES
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RAY MALIBU
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ENGINE SEEMS NOT TO BE GETTING GAS I CHECKED FUEL PRESSURE AND IT WAS 44 PSI THEN CHECKED ALL INJECTOR PLUGS THEY ALL HAD 12 VOLTS RUNNING ON THEM WITHOUT STARTING WHEN I WOULD START VOLTAGE WOULD DROP FROM 6-9. COULD THIS BE A BAD ECU?
May 5, 2013 at 2:11 PM
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JDL
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When you first turn they on, no crank, You should have close to battery voltage on both sides of injector, because there is no ground. What color wire were you testing at the injector? Do you have an injector pulse, engine cranking? Does the battery have a full charge?
May 5, 2013 at 2:38 PM
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RAY MALIBU
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THERE IS NO PULSE ON ANY INJECTOR AND THE BATTERY HAS FULL CHARGE. THERE IS SPARK I PUT 12 VOLTS ON INJECTORS THEY ALL CLICK AS SHOULD AND LET FUEL PASS BY WANTS TO START WHEN I DO THAT THAT'S WHY I THINK IT'S THE ECU.
May 5, 2013 at 5:49 PM
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JDL
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My first thought is to look for rpm signal, if computer doesn't see that, no injector pulse. You shouldn't have to add voltage to injector, the pink wire goes hot when you turn on the key.
May 6, 2013 at 9:14 AM
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WRENCHTOSS
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Ecm applies grounds to activate injectors it uses the ignition module to time them
check the ignition module it should be easy to get to on this model..
May 21, 2013 at 5:39 PM
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JDL
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Sounds good to me.
Jun 27, 2015 at 9:49 AM