what is my next step???

1996 BUICK PARK AVENUE
173,000 MILES
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STUMPEDMECH
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1996 buick park ave, wont start, has gas in the rail, has spark, but no pulse to injectors...
Aug 26, 2011 at 6:11 PM
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JDL
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What is the engine size? Check for rpm signal, comes from crank sensor. At the moment, I can't say that the crank sensor is faulty.
Aug 26, 2011 at 6:51 PM
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STUMPEDMECH
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doesnt the crank sensor tell pcm when to spark too??? so if it has spark that would mean sensor is ok right?
Aug 26, 2011 at 7:31 PM
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JDL
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It's a dual crank sensor. To answer your question, possibly. The crank sensor signals go to the ignition module. The computer has to see both sensor signals or it won't start. With a single signal crank sensor, where the signal goes to the ignition module, without that signal, no spark. I'm not sure about the dual crank sensor? With dual crank sensor, if either signal is lost, the vehicle won't start.

Any applicable codes? Usually the cost of a crank sensor is no where near the cost of ignition module. I haven't priced that dual crank sensor?

At the injectors, do you have voltage?
Aug 26, 2011 at 7:51 PM
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STUMPEDMECH
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Did have MAP sensor code but replaced and code went away. No voltage at injectors.
Aug 26, 2011 at 8:01 PM
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JDL
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The pink wire is voltage for injectors, fuse protected. Goes hot with the key on.
Aug 26, 2011 at 8:08 PM
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JDL
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Replacing the fuse may not fix it? Could have faulty wiring circuit or injector issue?
Aug 26, 2011 at 8:17 PM
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STUMPEDMECH
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No blown fuses at all one thing I could come up with would be replacing PCM...
Aug 26, 2011 at 8:20 PM
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JDL
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With the key on, use a voltage tester at the fuse leg, anything/voltage? If no voltage it isn't the pcm.
Aug 26, 2011 at 8:30 PM
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STUMPEDMECH
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13.1v at fuse leg for pcm/vats.
Aug 26, 2011 at 8:58 PM
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JDL
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Do you see the fuse in the diagram I posted? That is the one to check.

Does the starter crank?
Aug 26, 2011 at 9:10 PM
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STUMPEDMECH
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Got it taken care of that fuse blew again. Thanks for help take care
Aug 26, 2011 at 10:01 PM
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JDL
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How many times has that fuse blown? If it has blown several times, you need to find out what is causing that fuse to blow?
Aug 27, 2011 at 2:03 PM
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