Question about 1998 Cadillac DeVille

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NO SPARK NO INJECTOR PULSE ,POWER IS GOOD AT MODULE NEED SCHEMATIC NEW CRANK SHAFT SENSOR ,CAM SHAFT SENSOR& MODULE

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  • Anonymous Mar 19, 2014

    91 deville, ran fine , fell flat on her face, since then , I did research and all signs pointed to the ignition control module? I replaced that , but still it cranks over but no fire? so could it be the cam shaft sensor or crankshaft sensor, neutral safety switch , or maybe just the pickup coil above the HEI distributor? help :)!

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Check timing belt. sounds like it broke

Posted on Jun 03, 2009

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1 Answer

Can ignition module cause engine to have no injector pulse even though it has spark


injector pulse from ECU

the ECU will have fault codes stored internally to find the cause

would check other sensors first
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if the engine cranks over and has spark
ignition would be the last thing i would checkout

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Hi you need to check for fuel pressure and volume then injector pulse . check for spark , check timing and compression.
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is there power and ground to the coils?

If there is injector pulse than the crank sensor has to be good. Injector pulse and spark are both calculated off from the signal from the crank sensor.

Checking for power and ground to the coils is a good place to start. If that checks out than either there is a wiring issue in between the PCM and the coils or possible the PCM has failed.

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